VirtualCam | Virtual camera | Computer Vision library
kandi X-RAY | VirtualCam Summary
kandi X-RAY | VirtualCam Summary
Virtual camera is created only using OpenCV and numpy. It simulates a camera where we can control all its parameters intrinsic and extrinsic to get a better understanding how each component in the camera projection matrix affects the final image of the object captured by the camera. It can be used to understand concepts of image formation and to understand the intrinsic and extrinsic camera parameters. An interractive GUI is also provided which simulates a virtual camera and a plane in 3D world. By changing the extrinsic parameters of the camera (rotation and translation) you can simulate how the image being formed changes. Standard books related to multi-view geometry and computer vision were refered to ensure validty of equations in the code. I also refered this blog from learnopencv.com to understand the geometry of image formation. The opportuinity to sit through the CS763: Computer Vision Spring 2020 course at IIT Bombay also helped me to clear my fundamental concepts related to the geometry of image formation and camera projection matrix.
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Trending Discussions on VirtualCam
QUESTION
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 09:36I 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
QUESTION
The problem is when I'm saving the game once then when starting a new game without quitting the game first it's starting the new game but the camera for example and player positions are not the same as when starting the new game at first time. Maybe the camera is the same but the player position is not.
It looks like when making a new game WITHOUT QUITTING the game first after saved the game once not reset everything.
I have two scenes in the hierarchy Main Menu and Game. Under the Game I have all the game objects.
In the Main Menu I have this script with two methods that I call from a buttons onclick events one for new game one for loading :
...ANSWER
Answered 2020-Sep-30 at 07:51I'm not sure what that Savable component on the player is, but I assume from its name that is a component that saves and loads the state of the player automatically, which obviously overrides the player position when the scene starts.
Simply define a Player_Start transform in the scene (an empty game object) and add a simple logic that, if the game is a New_Game then place the player at Player_Start.
QUESTION
In this script I set the maximum code length in this case 8. Then I build the code from a onmousekeydown events.
...ANSWER
Answered 2020-Sep-26 at 02:09Trace through how this loop will run
QUESTION
This is what I tried but the text is never show on the text mesh :
SecurityKeypadKeys script :
...ANSWER
Answered 2020-Sep-25 at 08:05As mentioned there are some uncleared things but most importantly: I would make the entire system more event driven and not poll-check stuff in Update
every frame.
I would also separate the responsibilities for each component as clear as possible. E.g. like
SecurityKeypadKeys
is only responsible for handling it's own key press. It doesn't know/care what happens with this keypress. It doesn't even know who will handle it or that something like a code or display text exist.SecurityKeypadSystem
this is responsible for handling key presses, store the so far input code, control the display, combine the digits and fire an event once a code is complete. It has no further knowledge about what will happen with this code. It doesn't even know who will handle itUnlockCrate
is in your setup the most "powerful" class. It enables/disables the entireSecurityKeypadSystem
, handles the code once it is complete, validates it and finally is responsible for opening the box .. or not. It doesn't have to know that something like a display text exists - it only cares about the final code.
So it could look somewhat like e.g.
QUESTION
I have to create a virtual cam in c# asp.net which should be accessible in skype and adobe live flash encoder. In c#, I have found only this link describes how can achieve this. But when trying with the source code they provide, I'm getting two errors ,
Severity Code Description Project File Line Suppression State Error An error occurred while writing the registration information to the registry. You must have administrative credentials to perform this task. Contact your system administrator for assistance VirtualCam C:\Users\Documents\Visual Studio 2017\Projects\VirtualCamSrc\Sources\VirtualCam\RegAsm
Severity Code Description Project File Line Suppression State Error The command ""C:\Users\Documents\Visual Studio 2017\Projects\VirtualCamSrc\Sources\VirtualCam\bin\x86\Debug\install.bat" VirtualCam" exited with code 100. VirtualCam C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\MSBuild\15.0\Bin\Microsoft.Common.CurrentVersion.targets 4935
I have given full control permission for HKEY-CLASSES-ROOT.
And when I'm trying with thier binary code, command prompt says
RegAsm : error RA0000 : Unable to locate input assembly 'VirtualCam.dll' or one of its dependencies.
Can you help me to solve this issue? My system is 64 bit operating system.
...ANSWER
Answered 2020-Apr-08 at 16:35I had the same issue. Right click on Visual Studio shorcurt or executable, Run as Administrator and you'll be ready :-)
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Install VirtualCam
You can use VirtualCam like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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