Learn by example and discover how Cubase is the heart of Steinberg's eco-system of interrelated products. This resource also features other advanced users and enthusiastic amateurs and fans alike.
Please wait while database is loading. YouTube Link. Is there a way to conform notes to a scale during recording? How to create a groove from an audio file with varying tempos?
Tempo VariAudio. Can you edit hitpoints in the lower zone? Hitpoints LowerZone. Can you do VariAudio Editing in the lower zone? VariAudio LowerZone. Can you adjust the pregain from the inspector on left hand side? Gain Inspector. Is Steinberg support available only by chat? Any tips for improving performance on older MacBook Pro?
Performance MacBookPro. Plug-Ins Interface. How to make macro to return to start position and audition punch in recording? Macros Audition. How to separate drum audio into kick and snare? How to quantize on the grid line? Quantize GridLine.
What is the function of group faders after a mix has been established? Can user patterns be used in TGuitar? Can you show tips on colorizing tracks with the project logical editor? ProjectLogicalEditor Color. Can I monitor the preview in the right zone though a spectrum analyzer? SpectrumAnalyzer RightZone. Can you use the delete time without cutting video and tempo information? Can we have drag and drop for FX from right zone in the full MixConsole?
Mixconsole RightZone. How to get an accurate tempo map of a full track? Why am I getting pops and clicks after rendering a GrooveAgent track? GrooveAgent Click.
Is it possible to record the chords from the proximity or circle of 5ths diagram? Chords Proximity. Why can I hear sound in my monitors but Cubase is not recording the signal? Monitors Recording. Why are Vari Audio Edits nullified when doing offline processing? VariAudio OfflineProcessing. How to start all songs from the first bar?
Does Cubase include CCs when exporting pitch to audio for higher accuracy? CC Exporting. Why do plug-ins cause latency during recording? Latency Plug-In. Why do wave files from FL Studio 20 sound bad when importing into Cubase? Import WaveFiles. Can you show some cool macros to save time on editing?
Macros SaveTime. Why is audio recorded from first bar printed with a delay? Delay FirstBar. Can you do a head to head against Nuendo to see if extra features with Nuendo get in the way of wo Nuendo Gain.
What is the one killer feature you have seen in another DAW that you want in Cubase? Sync ADAT. ChordPads MidiController. Can you copy inserts to other tracks from project window? Inserts ProjectWindow. What are advantages of using Expression maps vs key switch notes in editors?
ExpressionMaps KeySwitch. What is your preference for time stretching algorithm? TimeStretching Elastique. How to change the tempo of multiple tracks on the project window? ProjectWindow MultipleTracks. Sync Video. Are there any plans to develop a group freeze function? Can group tracks mirror project and can automated parameters be indicated with a red dot?
GroupTrack Automate. How to do a recording for a first time user? Do I need the AB plug-in to work with a reference track? Plug-Ins ReferenceTrack. How to copy all Mix Settings to a different song with same track configuration? TrackConfiguration Settings. Why does track get high latency after record? Latency DelayConstrainCompensation. How to broadcast audio out of my Cubase sessions to oBS? How to quantize the start positions of events on the project window?
Quantize ProjectWindow. MidiController Mapping. Is there a vocal template to make my vocals sound more professional? Vocals Templates. Is it OK to export GrooveAgent audio files as mono? GrooveAgent Mono. How to use my Yamaha keyboard to trigger sounds in a VSTi? VSTi Trigger. What is the loopback function in the UR28M used for? How can I add a Roland U20 patch name script to Cubase?
Naming script. How to fix latency when using a plug-in on a track? Is it possible to extract MIDI from a stereo drum loops with multiple instruments? ExtractMidi DrumLoops.
Why does adding more plug-ins add latency? Can the volume of segments be indicated in VariAudio editor? VariAudio SegmentVolume. How to show waveform in automation lane?
Automation Waveform. Why can I only hear VST instruments when monitor is enabled but when record enabled? VSTi RecordEnable. Why is MIDI controller playing all instruments at once? Why when I saved a project and reopened it later do the changes were not saved? Saving Project. Why don't I can't record do not have wave or graphy? Can you demonstrate beat detective style multi-track drum quantizing? DrumQuantizing Multi-Track. How to setup the. Studio Pass? How to record audio from a VSTi in Cubase?
VSTi Record. How to move tuning in Cubase from Hz to Hz? Is there a way to search for patches which have key switches? Are any expression maps provided with Cubase? Anyway to import Expression Maps for SampleTank?
ExpressionMaps Import. How can I make my sound loud like a commercial release? Why does continue, new version or cancel mean when in VariAudio? VariAudio Version. Why don't I see a musical mode icon in upper right after enabling musical mode in pool? MusicalMode AudioPool. Is it better to render or bounce tracks after comping before adding effects?
Rendering Comping. Why is minimize breath macro better than a noise gate? Macros Noise. How to keep color palette open when coloring multiple tracks? How to keep an undocked window from HALion open when closing the instrument editor? Halion Instrument. How to manage latency with a VST Connect session? Latency VstConnect. How to export different tracks from a longer seamless recording? Why can't I find a C5 chord in the chord track?
Do you have any suggestions for a new studio desk? How to have everything contained in a folder when creating a project? Folder Creating. How to improve performance using HALion 6 in Cubase? Halion Performance. How to consolidate all events into a single part to organize for a mix? How to crossfade multiply selected audio clips in one command? Crossfade AudioClips. Does Cubase allow for sophisticated voicing assignments for chord tracks? ChordTrack Voicing. What you suggest for modulating a VST instrument without modulation abilities?
Is it possible to add 3rd party plug-ins to the Cubase channel strip? Is there a document that has all Cubase shortcut keys listed? Why do I have to load the global preferences each time I start Cubase? Is it possible to update a profile saved in the profile manager? Saving ProfileManager. Is there a way to drag a MIDI file or a range directly to a chord pad?
ChordPads Directly. Import Importing. How to clear a range off of the top? ChordPads Cursor. What does the group editing show a message not all tracks in sync? Sync GroupEditing. What is the right way to add reverb on a VST instrument?
Can you tell us how to align vocals with AudioWarp? AudioWarp Vocals. Why HALionOne synth keeps going out of tune? How to prevent chords from following voicing modes of previous chords?
Voicing Chords. Is there a way to transform all red and blue notes to green notes using logical editor? Why was the UR22 discontinued? Discontinued Ur Is it necessary or important to delete empty spaces in audio files?
Is the freeze function outdated since the introduction of render in place? Rendering FreezeFunction. DSP UR Is there a way to control room click volume through generic remote? ControlRoom GenericRemote. Will there be more advanced videos on ClubCubase Youtube channel? Video ClubCubase. How do power outages affect software performance? Will Nuendo ever have its own hangout series? Nuendo Hangout. Why do templates have a stereo out as opposed to the master fader that I see in your projects?
MasterFader Templates. Is there a way to do a turntable stop effect in Cubase? Is there a way to use to use stereo effects on mono tracks without an effect sends? Mono EffectsSend. How to setup Cubase to sync to external clock sync source? Sync Setup. How to render in place in mono? Rendering Mono. Is there a way to change the default fade curve type? FadeCurve Default. Why when I am recording in a instrument track is the recording separately and not in the same frame InstrumentTrack.
HalionSonic PitchBend. CC GenericRemote. Is it possible to put a vocal chop in the piano roll editor? PianoRollEditor Vocals. How many CPU cores will Cubase utilize? CPU Cores. Why does the dry mix knob on compressor change sound on when on set fully to dry? Is the Cubase channel strip modelled after any particular hardware? ChannelStrip Hardware. Is there a way to render a VST in mono? Is it possible to purchase more arps for HALionSonic?
Did Steinberg fix the RXT video card issues? Is there a way to add an audio track preloaded with an insert? Can you explain the insert channel routing options and when to use it? Inserts Routing. Can you discuss how to start with composing for film and video? Video FilmScoring. Can you drag track pictures from track to track? Drag TrackPictures. Can you play chords to define chords in chord track? ChordTrack Chords. Why is MediaBay constantly scanning?
Mediabay Scanning. How to export audio connections from one Cubase version to another? Export AudioConnections. Can you share tips for getting faster at setting up recording tracks? Workflow SettingUp. GrooveAgent Halion. How to adjust snap to grid feature from bar to beat in Nuendo 10? Nuendo SnapToGrid. Can I have guitar loops follow the chord track?
Anyway to use 32bit VST plug-ins in Cubase? VstConnect Loudness. Why when muting a track in audio lanes does it play the lane above? Muting AudioLanes. Why sometimes importing audio file in Cubase Convert Import. How can you monitor in mono only? Mono Monitor. Can you discuss realtime needs of internet speeds for VST Connect?
How can I create a template that I could access commonly used tracks from? Does Cubase support Windows 8.
How to deselect channels 31 and 32 for click option in metronome? Metronome Channels. How can I have 2 channel settings windows open at once? GUI ChannelSettings. Plug-Ins Activating. How to solo track with sidechain processing without listening to sidechain input?
Sidechain Processing. How to setup Cubase to output to a Bluetooth speaker for monitoring? Monitoring Bluetooth. CC Messages. Is there a way to automate pitch within an audio region? VariAudio Hz. How to configure external hardware effects processors? ExternalHardware Effects. How to optimize my CPU performance on my Mac? CPU Performance. Why have my fade handles disappeared on an audio part on the project window?
ProjectWindow Project. Should I upgrade my OS in the middle of an album project? CC Faders. Can I use my Kensington trackball in conjunction with Cubase? Is there a way to come up with chords derived from a melody? Can you discuss the tail options in the direct offline audio processing? OfflineProcessing DirectOfflineProcessing. How can I have quick controls activated by default? Is there a function to align a DI and an amp mic track?
How do I incorporate an Aviom system in Cubase? How to put different flexphrazers into a project? How to bounce to mono? Bounce Mono. VariAudio Pitch. How to change all tracks within a folder to the current folder track color? Folder Colors. What is the quickest way to create a L minus R monitoring scenario? Will I ever do a hangout for Dorico? Dorico Hangout. Is there a way to trigger a power chord from guitar chord voicings in chord track?
Is there a way to disable input channels without hiding them? InputChannel Channels. Is it OK to use my trackball with Cubase Trackball Mouse. Workflow MidiEditing. What is the small window that appears above a note when editing MIDI data?
Can you show how to switch between different metronome patterns? How can I export individual tracks as stems? Export Stems. What is difference between CC automation or regular automation? CC Automation. Should I export wavs to 24bit for delivering audio for games? Export Games. Is there a way to change multiple track icons at once? Why is MediaBay empty in my Cubase 9.
Mediabay Cubase9. Is there a way to create an extra folder outside of folder when using a template? Folder Templates. How to create user impulses for Reverence? Reverence ImpulseResponse. Any specific uses for the different included compressor plug-ins?
Plug-Ins Compressor. Can you extract chords from a vocal track? Chords Vocals. Is it possible to time sync audio to the beat? Sync TempoDetection. Why do I get a spinning beach every few minutes? Crash SpinningBeach. Is there going to be a WaveLab sale in conjunction with the StayHome offer?
Wavelab Sale. CC Record. How to bypass inserts on every track with one mouse click? Inserts Click. Which is better for film scoring MIDi or instrument tracks?
InstrumentTrack FilmScoring. When will the next Nuendo update be released? Nuendo Update. Is it possible to load a track with quick controls turned on by default? Is a Mix Bus essential for great mixing? Mixing MixBus. Can you explain how to use the retrospective record within the key editor? Retrospective KeyEditor.
Should multiple cues be loaded in a single project for films? MultipleCues Film. Why is my cursor visually out of time in project? Does rendering multiple tracks multiply the render time too much? Rendering MultipleTracks. ClubCubase Hangout. Is there a difference in sound quality using real time export or offline?
Export Offline. How to install Nexus 2 into Cubase? Nexus Install. Plug-Ins MicroTuner. Why are their glitches in my Mac mini setup? How can I adjust velocity proportionally on an entire track? What is the craziest thing I have seen in Cubase pushing the limits?
How to hear VariAudio Segments I don't hear the notes pitch as they are adjusted? VariAudio Segments. How to include selected track as a criteria in the Project Logical Editor? What is the difference between bounce selection, render in place and Export Audio? Rendering Bounce. Is there a way to hide the folder track on the project window? Can automation on groups be moved with tracks?
How can I change middle C from C3 to C4? Is there a way to assign knobs other than using generic MIDI remote? Can you send the output of MediaBay somewhere else besides outs 1 and 2? Mediabay Output. How to randomize velocity on snare using logical editor?
LogicalEditor Velocity. EditPitch Pitch. Is it possible to select more than one but not all MIDI controllers for a track?
Simple image slider with caption and arrows. Thumbnail image slider. Image slider with static slide on it. Full width content post slider. Layer slider with layers styles. Blocks This plugin provides 1 block. Smart Slider 3. Then activate the Smart Slider 3 plugin. Then you can add images and videos as slide and you can customize your slides with layers.
Then copy the shortcode from the Publish slider box and paste it into a post or a page. FAQ 1. How do I add the slider to my site? Where can I reach the documentation? Where is Canvas mode? Why is there an empty space where the slider should be? What should I do when I experience any problem?
Contact us! Is Smart Slider 3 is totally responsive? Can I customize the fonts of the slider? Can I show multiple instances of slider on one page? Yes, you can use as many sliders on a page as you want. But you can only use one slider once. How to include a slider in a post or a page?
How to include a slider into header. Just needed a simple slider and this does the job perfectly, free version has tons of options if you want to play.
Installed and within 2 minutes my slider was up and running. Great slider. Can make different layouts for mobile which is great. Loads fast. Absolutly a great plugin, easy to use. I still cannot believe how deep the functionalities dig. By far the most gorgious slider extension ever.
And even the language switch works like a charm. I took over development of a site that used Smartslider and have found the plugin to be excellent.
The support is also really really good and any issues I've had have been fixed very quickly - really impressed!
Contributors Nextendweb. Interested in development? Changelog 3. November Feature: The old background animations are allowed again when the fill mode is not fill, but anything else. Feature: You can now customize the Loading animation delay time. Fix: Image layer box shadow now shows up in the Slide Editor.
Fix: Compatibility fixes with Perfmatters. Other: Dutch translation added. Thanks, Frank! Other: Spanish translation updated. Thanks, Rodrigo! October Feature: Background blur option for the Blur fit fill mode. Fix: Divi Builder plugin has strong codes so we use a special ss-p tag to display the texts. An issue was fixed related to these ss-p tags that made them display incorrectly.
Fix: Focus incorrectly stayed on the arrow after slide switching. Fix: Arrows could get highlighted in Safari. Other: Better handling of the translation files. Other: French translation added. Thanks, Jean-Francois! Fix: Text Scale option could create different result in Preview and Editor in extreme cases. Fix: Column calculation adjusted for better responsive accuracy. Fix: When the Autoplay is enabled and only one slide is available, this one slide is duplicated to allow the autoplay to work.
From now on the dynamic slides are skipped from this process. Fix: A wrong path could be generated for the resized thumbnail image at the backend in rare cases. Other: Spanish translation has been updated. Feature: Gutenberg block toolbar is available at the slider. Fix: Fix for an output buffer problem related to Themeco Pro theme. Fix: PHP 8 compatibility fix to avoid Heading layers creating hdiv tag. Fix: Outer positioned controls could create scrollbar, especially on small screens.
Other: A couple of strings were not translate-able, which is now fixed. I have installed and am successfully running the cv environment. I got the document scanner to work with your example images and with images I have previously saved, but would now like to integrate my PiCamera into the scanner and skin detection programs and others.
I have a bad feeling that it might be the latest 1. Luckily, I think the fix is simply to downgrade to a previous version. Thanks so much for the response. I ran pip list while in the cv virtual environment, and it appears you were right. My picamera is version 1. What is the easiest way for me to downgrade to 1.
Adrian, thank you for sharing your knowledge. I also had the aforementioned issue and wanted to let you know that it worked fine once I downgraded picamera to 1. Try downgrading to picamera v1. There are some issues with the most recent version of picamera that are causing a bunch of problems for Python 2. Same problem here. However, I did modify the sample so that a camera. Hey Paul — thanks for sharing. Hello Adrian, Thanks for all the tutorials. This tutorial worked great through vnc, and everything run fine.
Do you know any way to resolve this issue? It still pulls up a Gtk warning. Then I tried using xhost, but it always pulls up an error. Hi, I think I know what you were doing wrong, because I have been encountering the same thing here and ran out of solutions until I bumped into a video on youtube.
Basically you need to install XQuartz on Mac and use its terminal to try to run what Adrian was advising us to run. At first I was running doing the same exact stuff on the terminal I usually use but when I tried the XQuartz terminal it worked. I also had the same error, and solved by installing Xquartz!! After I install Xquartz, even when I run the code in my default terminal, a new window of image or video pops up with Xquartz.
Thank you very much guys. I would like too first say a huge thanks for the tutorials you offer here and take the same opportunity to drop a quick question. I was able to run the image test, but the video test is giving me a black screen. I am not sure if you have any idea of what is happening. I would suggest upgrading your picamera installation:. I installed OpenCV 3. Everything works, but the video feed is slow and laggy! You can actually increase the FPS of your processing pipeline by utilizing threading.
I would suggest upgrading to the latest release which will resolve the error:. I captured the images with picamera 1. I also would like to compress the captured image — would you recommend gzip and other Python modules or something else? If you would like to capture a frame from a video stream, convert them to a bunch of different color spaces, and then write them to file, then yes, using OpenCV would be better for this.
For all the others, you should use OpenCV to perform the color space conversion for you. For now I captured a still image with raspistill and with the use of picamera library. I followed Advanced recipes from picamera 1. I would start with bitmap files and then explore various compression algorithms.
Hope you can answer my question. Greeting from Mexico! Either way, it sounds like a threading error. I would suggest inserting print statements into the code to determine exactly where the threading error is happening.
First off — thanks for some amazing tutorials! When I try to use the output and test the camera, everything works fine. Have I done something wrong, or am I missing something?
Its worth to mention — I strugglede quite a bit with the OpenCV installation, and although the installatino of 3. If your frame is completely black, it sounds like you might be using outdated Raspberry Pi drivers. I would suggest running rpi-update and updating the Raspberry Pi firmware. Hi Adrian, Thanks for the teaching. What is the problem, and how to fix it? And it worked just fine. Just to make sure, type your commands into the command line instead of copying and pasting, just in case that is causing any problems.
I did all those steps through SSH connection. But I am using Window. I do not know how have the similar setting for Window. Are you sure it exists? And are you executing the code as any other user than the pi user? Finally, regarding the -X switch for X11 forwarding, your Windows SSH client should have an option for X11 forwarding — be sure to search through the options for it.
I see the image on my PC terminal now, after having installed the Xming on the PC and selected the proper setting for x11 on the putty on the PC. But only a portion of the image is displayed. I have got the image, though the frame rate was likely lower than How can I tell what user I am when I am executing the code? I did not do anything extra locally. It was just whatever the state or user when the raspberry Pi was turn on. And I did not do anything extra remotely either.
It was just whatever the state or user when I log-in through the SSH. This is because it takes considerable time to transmit each individual frame over the network from your Pi and to your machine. You do not need to execute it on your local machine.
It sounds like you already have the picamera[array] module installed on your system. To upgrade to the latest version you can use:. Your video stream should be automatically displayed to your screen using the cv2. You can then save any frame using cv2. Thank you again. Can I use one pi cam to use multiple access? Thank you….. You can read the full tutorial here. Hey Umesh — take a look at my latest blog post where I demonstrate how to resolve this issue. Hi Adrian, Thank you for this and other tutorials that helped me a lot.
Without xorg I can not forward x11 through SSH. Do you know what I can do to fix it? It has to be possible as raspistill is able to display the image in the screen without problem, just imshow I have this problem. Hmm, this is an interesting question.
Ok, thank you. NO video streaming. If you read this comment then please do walk me through this problem. Hey Ekhwan — Please see this blog post where I address common Raspberry Pi camera issues , including the solution to this issue. Hi Adrian! I meet some problems. I have read the comments of Joe Landau but I still can not understand how to fix it. Do you have any clue? Thank you! The GTK warning can be resolved by X11 forwarding.
And i aslo need a wearable device to notify the person about the video,in audio format. Hi Adrian; Thanks a lot for your documentation and demonstration. I have a little problem here. I used same version of raspbian with raspberry 3. I got only small window which was all black. Could please help me about that?
That sounds like an issue with your firmware version. Thanks so much! Attempting to upgrade is either a requirement already up-to-date picamera , or has a major error and cancels itself picamera[array].
Hey David, I had to edit your comment to remove some of the output from the terminal — the output was destroying the formatting of the terminal. The virtual environment automatically determines the correct version of pip to use. Hi the single image works, but on the video stream I get only a black screen without error message. You should use a terminal-based text editor. The easiest terminal text editor to use for beginners is nano :. Could you please do a tutorial on how to stream using netcat, or gstreamer..?
I am trying to make a pan and tilt object tracking device on raspberry pi using python and opencv. My confusion is how to use python bindings of gstreamer within the code so that the video can be monitored on a pc. I will certainly consider doing a tutorial on gstreamer. Hi Adrian, I appreciate your tutorials and will be buying your book as soon as my budget is opened for the new year.
In the meantime, I am wanting to use the Raspi camera with your ball tracking tutorial. Can you tell me what I need to do to use the pi camera instead of a usb cam? Hey Leigh — I would use this blog post as your starting point. Use the template I have provided and ensure you can read frames from the Pi camera video stream. From there, any code within the while loop of the ball tracking example needs to be included inside the for loop of this example.
I have started doing a project with raspberry pi and image processing and the robot is supposed to track a ball. What camera module will be better to use for speedy applications? Is that RPi camera? Or a normal webcam? Either one will work for simple ball tracking. Hi Adrain, the blog was very helpful in setting up raspberry pi. Also the tips and tricks were very useful. Thanks a lot. I am a beginner in raspberry pi, and I want to make shapes recognition like cube or cylinder shape, so what is the steps to do it?
I would suggest starting with this tutorial on shape detection. Hello, this is an awesome post. This will be my first Pi project. What Pi do you use? I would recommend the Raspberry Pi 3 for computer vision. The Pi 2 is also suitable but since the Pi 3 is a little faster, I would use that.
Hello Adrian, i write my Bachelor Thesis now. My job is to shorten the time of the transfer process between RasPberry and Android, when the camera of RasPBerry makes a video. Previously, this process takes about 2 seconds. So my question is this: what should I do about it?
Hey Solveig — what method are you currently using to send frames from the Pi to your Android app? A bought a pi camera module V2 which is 8MP. I installed opencv 3. Could you recomand a solution? It sounds like you need to upgrade the firmware on your Raspberry Pi. See this post for more information.
THanks for sharing Ken — and congrats on resolving the issue! Dear Mr. Adrian i am currently using raspberry pi3 with jessie installed for my project and i am trying to Accessing the Raspberry Pi Camera with OpenCV and Python. Adrian apparently issue is fixed and i must thanking you tons and tons, thank you so much to your real support cheers!!!
Hello Adrian, Thanks for your for your great tutorial! I followed your introductions in this blog and it works after several problems.
What does this warning mean? What is going wrong? Nevertheless the video stream is shown in the window. This is not an error, just a warning. It comes from the GTK library. It can be ignored as it is not related to OpenCV. Execute the script via the command line no IDLE. I had such a hard time figuring this out. Great tutorials. I am doing a final year project of an autonomous car with vision processing. I just get a black screen when i run this script. Any ideas??? Refer to this post to resolve the issue.
Hello I was faced to the same problem of slow frame rate 2 or 3 frames per second when using putty with X11 forwarding , but when switching to VNC all things works fine. Go back and ensure picamera has been installed.
If you were getting a blank screen, you likely need to update your Raspberry Pi firmware, as discussed in this post. Have you fixed this problem. I have the same problem. Hi Adrian, I followed your steps into executing the code and also downloading opencv.
Everything was installed successfully. I just want it to work through my laptop as it would be much more convenient rather than me having to connect and disconnect to my TV to check if it is working.
I hope you can still try to help me. You need to enable X11 forwarding from your SSH connection to see the image on your screen. I would check the PuTTY documentation. If yes can u guide me what to do. Thanks for the great step-by-step guide. Would you happen to know what might the cause be? I would validate that both packages have installed into your Python virtual environment via pip freeze. Also double-check that you are inside your Python virtual environment when executing the script.
I get the same error, even after reinstalling numpy and picamera both return Requirement already satisfied. Please refer to this blog post to help accessing either the webcam or Raspberry Pi camera module using the same class. I would suggest re installing X11, then re-compiling OpenCV.
You are right. I realy not an expert. To start, make sure you are using threading to access your video stream. Secondly, keep a large copy of the frame, but only apply face detection to a smaller, resized version. Face detection can be an expensive operation, especially for the Raspberry Pi.
The less data you have to process, the better. If a face is detected, extract it from the higher resolution frame multiply bounding box coordinates by ratio of new image size to old image size , and then pass into your face recognizer. I would also inspect your code to determine what the bottleneck is in case it is not the detection phase. Thanks a lot again, your making me a huge favor with your generous help. Hey Alex — are you using Python virtual environments?
I followed your earlier tutorial to install OpenCV 3. I installed in python 3. Most of the time this error is caused by you not being in your Python virtual environment before executing the script. Hi thanks for all this. Hi Adrian, I would like to know if the Raspberry Pi camera module needs to be calibrated to have images without distortion and to know the intrinsic and extrinsic parameters of the camera, if so could you please tell me how I can calibrate it, thank you very much.
You would need to calibrate the Raspberry Pi camera yourself. I would suggest starting here to learn how to do so. I installed open cv with the help of your tutorials. It sounds like your Raspberry Pi cannot access your camera module. Make sure the camera module is enabled via raspi-config and then run raspistill to see if the camera can save an image to disk. You should also double-check the camera connection on the Pi as you may have installed it incorrectly.
I am just starting out on this, and your instructions are very good. I appreciate the dedication you have to this. I got all of my install done correctly I believe as I achieved all of the checks you showed. It might be the case that there was as error during your copy and paste of the code into a new file. Hi Adrian, I was wondering if there is any way to use usb cameras with the pi with opencv python. Is there a better alternative? You should then read this post on multiple cameras with the Raspberry Pi.
Yes, absolutely. I would suggest following this tutorial and then updating it to use the VideoStream class. Any suggestions are welcomed. Thank you for the suggestion! This is an issue with your Raspberry Pi camera module. Follow this blog post to resolve the issue. I am using a Pi 3 and Pi Camera V2. I would be grateful to hear from anyone who has figured this out or can at least confirm the same results with the same hardware.
Thank you for the useful tutorial. The problem is that I can just capture one image with one of the cameras. I do not know how capture image with the second one. I would be appreciative if someone help me. Just to clarify — are you using two Raspberry Pi camera modules? Adrian, Wonderful set of articles you have put together!
With them I have gotten the requisite software installed and the Pi camera doing useful things in just a single evening, up to and including motion detection. Thanks for the effort. However, I am experiencing a lot of latency with video streaming.
I believe it is an ssh problem and was wondering if there were some workaround you could recommend. Using X11 over ssh creates so much latency that the video becomes unusable. Is there any better way to stream video remotely that you could guide me towards?
I was thinking about trying Gstream next…. Keep in mind that the latency you are seeing is purely network overhead. If your goal is to minimize the latency, use gstream. My other question is… If I want to do the project just using the OpenCV module and not the PiCamera module… would that work fine still? My Camera works when I run the command raspistill -o output. Please consult my OpenCV install tutorials for your particular system.
Instead of using Picamera can we use our mobile phone as a camera for RaspberryPi? Can u help me? There are a number of ways to do this. If you can elaborate on your project I can try to provide some suggestions to you. HI Adrian, Thank you for this tutorial, I have a question — How can I use this to stream the frames through a socket server to my computer.
I will like to capture the video and livestream to my computer. But before I send the frame, I need to append it to a list because i am making a Machine Learning Project where I need every frame to be saved.
Can you please help me or post a blog post on this. I need these frames to be saved as a numpy array so opencv can access them later. Thank you for all your help! Hi Amaan — thank you for the suggestion. Thank you again! Have you find a code to do what you want? I whant to do the same thong, but impossible to find a code that functionning.
Hi Adrian, Got a problem with Step 5. ServiceUnknown: The name org. Bus was not provided by any. It sounds like you may need to update your Raspberry Pi kernel. Please see see blog post for more information. Question for you: Is there any way to [periodically] start saving the frames to a video instead of a series of images? Maybe there is some method to push each frame to a video file-like object then save to an MP4 or whatever format??
That might be enough for your project. When you have enough frames, have a separate thread start that builds your video. Adrian, Thanks for this great tutorial. Keyboard inputs are reflected in the terminal screen, but nothing happens. I have to close the terminal screen to stop the python script.
Any clues? The window has to be open and active for the key presses to be registered. That is a warning from GTK. It can be safely ignored. What to do if I dont have a HDMI display and I connected my raspberry pi 3 through ethernet to laptop using vncserver, will this code still works? Keep in mind that the code will appear to run much slower due to the network latency of transferring the frames from the Pi to your local machine.
Installing SciPy on the Raspberry Pi will take a few hours. I would suggest letting it run over night. Install Xming on your windows machine, you need this as the output for the video. Do the Source and Workon commands, then run your python script.
You should get a Xming window open on your Windows machine which streams the video from your Pi camera. I hope this helps fellow windows users. Re: The no image, white window problem I was experiencing. Now there is no need to have a display connected to the PI. Did you use one of my tutorials? I am running in a virtualenv as shown in your previous tutorial. Were any of you able to solve this issue? I have been trying to figure it out for a while but there is no luck.
I am not using ssh either. Any tips would be much appreciated. How are you accessing your Raspberry Pi? Are you running the window display? Thanks for the tutorials Adrian, great work! I was probably making a silly mistake there. Sorry if this was already addressed above, but is there an easy way to modify this script to save the images to disk or access them via some other protocol if the Pi in question has no GUI installed i.
Why the maximum value is always less than in my case in any channels, even the image looks clearly saturated? A value of vs. You can, but it depends on the type of object detector if it will run in real-time on the Raspberry Pi. I would suggest taking a look at the PyImageSearch Gurus course where I demonstrate how to train your own custom traffic sign detector. Additionally, Deep Learning for Computer Vision with Python discusses how to train more robust traffic sign detectors as well.
Hi Adrian, thank you for the amazing tutorial! Just got one problem when I click close button on the video streaming window, it will keep appearing again the next second, so I have to use keyboard interrupt to exit it. You need to click on the open window and press a key on your keyboard to terminate the script.
How could I run a python script under correct virtualenv at startup for Raspberry PI. How can I change to full-color color balance without greenish image? It sounds like there might be a problem with your camera sensor itself although you should check on the picamera GitHub to confirm.
How do I go about testing the image and video with a usb webcam. It is so obvious my picamera is not working. Be sure to refer to this blog post for more information. Hi Adrian, I downgraded the picamera [array] to 1. I did get the output image but the color is wrong. Could you elaborate on what the issue is? Thanks for this, i am getting this error when trying to issue the command however ssh to run the script.
Hi, Thanks for your tutorials. I am too getting greenish images. However, when I capture an image with raspistill, I get a normal image with the right colors. So I guess it is not an hardware issue. Have you any idea what it might be? It may be an issue with the picamera module itself or the firmware of the Pi.
I would suggest posting on the official picamera GitHub. It sounds like you are not using any code from a PyImageSearch blog post, but based on your error, you likely started recording an output video file using the picamera module but never released the pointer before trying to record a new file.
I think you may be using a different set of functions. My primary suggestion would be to post on the picamera GitHub page where the library authors may be able to help you more. My RPi3 is hooked to a monitor.
The image is captured and can be saved using cv2. Actually i m working on a project to detect a circular cookies from pi camera streaming and then detect color and diameter of that cookie with a reference cookie, if color and diameter are same a msg displays OK but if anything does not match up display ACTION REQUIRED, cookies are running on a conveyor belt in front of pi camera.
Can u write me the code for this purpose as I am a beginner at python and open cv, and running out of time to go through some tutorials to complete my project. Thnx in advance. The raspistill is a command that will capture an image to disk. You could technically call that command then load the image into OpenCV but normally you would want to access the Raspberry Pi camera module directly.
Hi Adrian, This a great article, but what do i do when to happen error rawCapture. The rawCapture. If so, what is the error?
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