greenscreen | Virtual backgrounds and more for your webcam | Computer Vision library

 by   mb-14 C++ Version: Current License: Apache-2.0

kandi X-RAY | greenscreen Summary

kandi X-RAY | greenscreen Summary

greenscreen is a C++ library typically used in Artificial Intelligence, Computer Vision applications. greenscreen has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

Virtual backgrounds and more for your webcam
Support
    Quality
      Security
        License
          Reuse

            kandi-support Support

              greenscreen has a low active ecosystem.
              It has 12 star(s) with 0 fork(s). There are 2 watchers for this library.
              OutlinedDot
              It had no major release in the last 6 months.
              greenscreen has no issues reported. There are 1 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of greenscreen is current.

            kandi-Quality Quality

              greenscreen has no bugs reported.

            kandi-Security Security

              greenscreen has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

            kandi-License License

              greenscreen is licensed under the Apache-2.0 License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              greenscreen releases are not available. You will need to build from source code and install.
              Installation instructions are not available. Examples and code snippets are available.

            Top functions reviewed by kandi - BETA

            kandi's functional review helps you automatically verify the functionalities of the libraries and avoid rework.
            Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of greenscreen
            Get all kandi verified functions for this library.

            greenscreen Key Features

            No Key Features are available at this moment for greenscreen.

            greenscreen Examples and Code Snippets

            No Code Snippets are available at this moment for greenscreen.

            Community Discussions

            QUESTION

            what is a most efficient way to achieve fast and error-prone object tracking?
            Asked 2021-Jan-22 at 18:46

            after spending some time learning basic computer vision concepts and techniques I started to notice how unreliable simple scripts can get when the luminosity or scale changes and how resource consuming is to use more advanced solutions like creating a well-made HAAR cascade or HOG-feature based svm. Furthermore, some even more advanced methods involving machine learning usually take a lot of time and GPUhours when a high quality model is created.

            Recently while looking through YouTube I've found a lot of so called VTubers who use various software to control virtual avatars with somewhat precise motion tracking and what seems to be no errors whatsoever. While not something unimaginable, the amount of people using the software and the amount of software itself seems to be rather large.

            Planning to investigate even further I looked into different ways similar technology works, but so far I only found a complex solutions involving either AI driven models or assistance from some sort of positional sensors attached to the body of the user. Still its hard to believe all of those people go through such measures, so I realised that perhaps this is accomplishable with some cv solution which is relatively easy on resource consumption. So far I looked into different ways to "map" model joints to human ones. On my own I tried basic counter matching, and greenscreen filtering to avoid errors. while I successfully managed to remove almost all errors, there still were moments when mapping snapped arm for example to elbow and etc.

            How exactly is object recognition and motion tracking of such quality is achieved using only computer vision?

            ...

            ANSWER

            Answered 2021-Jan-22 at 18:46

            I'd recommend looking at the OpenCV Tracking API. It implements various tracking algorithms out of the box. Here is a good introduction to object tracking in OpenCV that would be a good starting point. These approaches would be fast and efficient, but that only address the tracking part of your question.

            Where the Object Detection (as in AI/ML, so maybe that goes beyond the 'computer vision' component of your question) factors in is identifying the object you want to track in the first place. Object detection would, of course, automate that. Object detection of discrete frames doesn't necessarily associate objects, so for example in video frame 1 you detect a vehicle, then in video frame 2 you also detect a vehicle: is it the same object or different? In this context object detection and tracking can work together to detect and then track objects (associating a unique ID) across frames.

            Below is an example from the SORT multi-tracking algorithm, which is a fast and easy to implement tracker that works in conjunction with ML-based object detection:

            Source https://stackoverflow.com/questions/65811771

            QUESTION

            Stream static image to v4l2loopback using obs with v4l2 plugin, ffmpeg or gstreamer
            Asked 2020-Dec-10 at 21:23

            I want to stream a static image to the android studio emulator. To do that I created a virtual camera using v4l2loopback v.12.5 in linux ubuntu 20.04. The virtual camera is created in /dev/video2. I can stream there using obs and a plugin, ffmpeg or gstreamer but I've got different issues with each one. I don't care which software works... I always use an image with the resolution 1920x1080 to test this.

            OBS: I installed the obs plugin following this tutorial here. It explains how to install v4l2loopback and add the plugin to obs. The plugin is called obs-v4l2sink. I start v4l2loopback using this command:

            ...

            ANSWER

            Answered 2020-Dec-04 at 09:36

            I just tried it with Android Studio Emulator API 28 (Google X86_ARM) and it works. So it seems that it is related to the CPU Architecture of the emulator and x86 64 does not work. I needed arm though and thankfully Google added Arm translation to an image in Api 28.

            It seems that only images with resolution 1920x1080 work, but maybe it is only related to the ratio.

            Obs does not work now for some reason but this command works perfectly: ffmpeg -loop 1 -re -i licensePlate2.png -f v4l2 -vcodec rawvideo -pixfmt nv12 -vf transpose=4 /dev/video2

            Source https://stackoverflow.com/questions/65130397

            QUESTION

            ffmpeg: chroma key (greenscreen filter) a short video continuosly loopling into a live video
            Asked 2020-Nov-13 at 17:08

            I know how to chroma key / greenscreen filter a background of a video stream and replace it by an image using v4l2loopback. After running

            ...

            ANSWER

            Answered 2020-Nov-05 at 20:51

            Use -stream_loop to loop and -re for real-time speed since you're streaming (or else it will play super fast):

            Source https://stackoverflow.com/questions/64704735

            QUESTION

            Video getting darker after Chromakey overlay with FFMPEG
            Asked 2020-Oct-22 at 18:47

            I'm trying to use FFMPEG to programatically put an overlay with greenscreen, and I'm using the following command:

            ...

            ANSWER

            Answered 2020-Oct-22 at 18:47

            QUESTION

            react-navigation v5: Exception thrown: createStackNavigator is not a function
            Asked 2020-Oct-08 at 16:24

            I am very new to React, if you need any more information let me know and I can provide. I am trying to add bottom tabs. I have followed the react-navigation documentation to the best of my ability. I have also scoured the forms and found a few similar questions, but still could not work it out. Thank you for the help.

            ...

            ANSWER

            Answered 2020-Oct-08 at 16:18

            Your imports are wrong You should import like below

            Source https://stackoverflow.com/questions/64266577

            QUESTION

            How to Batch Chroma Key Photos (Masking Green Screen)
            Asked 2020-Apr-23 at 16:41
            Goal

            I have hundreds of images that all look similar to this one here:

            I simply want to use the green screen to create a mask for each image that looks like this one here (the border should preferably be smoothed out a little bit):

            Here is the original image if you want to do tests: https://mega.nz/#!0YJnzAJR!GRYI4oNWcsKztHGoK7e4uIv_GvXBjMvyry7cPmyRpRA

            What I've tried

            I found this post where the user used Imagemagick to achieve chroma keying.

            ...

            ANSWER

            Answered 2020-Mar-02 at 23:04

            If on a Unix-like system, you can try my greenscreen script that makes calls to ImageMagick and is written in Bash Unix. For example:

            Input:

            Source https://stackoverflow.com/questions/60491901

            QUESTION

            ffmpeg -vg -filtercomplex, create gif with color kway and limited fps
            Asked 2020-Feb-03 at 15:09

            I need to create a gif file with color key (greenscreen) with 10FPS and specified size. I try to combine -vg and -filter_complex:

            ...

            ANSWER

            Answered 2020-Feb-03 at 15:09

            All filters for a stream should be within the same filtergraph, so inside the -filter_complex

            ffmpeg -i testdatei-c.avi -filter_complex "[0:v]chromakey=0xFFFFFF,fps=10,scale=320:-1:flags=lanczos,split[v0][v1];[v0]palettegen[p];[v1][p]paletteuse" output.gif

            Source https://stackoverflow.com/questions/60040403

            QUESTION

            Matlab: Why can't I create an mp4 file using VideoWriter?
            Asked 2019-Dec-29 at 23:31

            I want to remove the background of a video. After that I want to put it into another video and then save it as a new mp4-file. I'm using Windows 10 and I have the following problem that I can't create a new mp4-file after I run my code.

            Idea: I have a car with a greenscreen in the back. I want to cut this car out and put it in front of the street video. result should be a car driving on the street(video).

            code from myScript:

            ...

            ANSWER

            Answered 2019-Dec-29 at 23:31

            I managed to reproduce the problem and it looks like a codec issue.

            I downloaded FFmpeg command line tool, and generated sample (synthetic) videos:

            For carWithGreenscreen.mp4, I selected libxvid codec:

            Source https://stackoverflow.com/questions/59521679

            QUESTION

            Trigger action based on value in a Range
            Asked 2019-Nov-07 at 19:44

            I have a worksheet which contains:
            Project Number in Col A
            Project Description Col B
            Project Manager E-mail address Col C
            Date fields Col D and E
            Sent status Col F
            Date Sent Col G

            I want to send an email, once due date has been reached, with the details in the applicable row of the spreadsheet.

            I had it running however, it was specific to Cells "A2" and "C2".

            I attempted to revise my code to reflect the range in place of "A2" reference but receive a "Compile error syntax error" message referring to this line which is highlighted red:

            ...

            ANSWER

            Answered 2017-Oct-18 at 07:07

            QUESTION

            How do you edit individual pixels?
            Asked 2019-Oct-11 at 21:46

            I decided to make a image editing program using only the array given to me by the matplotlib.pyplot.imread method, but when I try to assign the contents of one pixel to another, it tells me that it: can't assign to function call.

            ...

            ANSWER

            Answered 2019-Oct-11 at 21:20
            f(xCount2, y1) = f(xSet, y1)
            f(xCount2, y1) = f(xSet, y1)
            f(xCount2, y1) = f(xSet, y1)
            f(xCount2, y1) = f(xSet, y1)
            

            Source https://stackoverflow.com/questions/58348564

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

            No vulnerabilities reported

            Install greenscreen

            You can download it from GitHub.

            Support

            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
            Find more information at:

            Find, review, and download reusable Libraries, Code Snippets, Cloud APIs from over 650 million Knowledge Items

            Find more libraries
            CLONE
          • HTTPS

            https://github.com/mb-14/greenscreen.git

          • CLI

            gh repo clone mb-14/greenscreen

          • sshUrl

            git@github.com:mb-14/greenscreen.git

          • Stay Updated

            Subscribe to our newsletter for trending solutions and developer bootcamps

            Agree to Sign up and Terms & Conditions

            Share this Page

            share link