2019年3月27日 · While it is possible to convert images from YUYV (also known as YUV422) into RGB via COLOR_YUV2RGB_YUYV, there is no reverse operation for this. I thought it should be simple to implement this with the YUV conversion and subsampling, but when I attempted that and afterwards converted the image back to RGB, it looks slightly different and more ...

2013年10月15日 · [Solved] How to make OpenCV to ask libv4l YUYV pixelformat instead of BGR24? editing OpenCV rgb/hsv values through a visual basic program? Read and Display RGB video file using opencv2.2. How to get pixel's value from a picture?

2016年2月8日 · When using webcams, a common format is YUYV 4:2:2. (Apparently in the Windows world that format is known as YUY2.) To convert that format to BGR which can then be used natively in OpenCV, you want to use the ColorConversionCodes enum COLOR_YUV2BGR_YUYV which is actually an alias for COLOR_YUV2BGR_YUY2 .

2016年12月6日 · Seems that AUTO_STEP is right (YUV422 is 16 bit per pixel depth, so CV_8UC2 is the right choice). To operate with image it will be simpler to convert image to RGB colorspace, so I suggest you to make cv::cvtColor( img, rgbimg, COLOR_YUV2RGB_UYVY)

2013年3月19日 · I found the answer. Cameras are able to output exclusively YUYV and MJPG, as enumerated by v4l2-ctl. qv4l2 enumerates RGB24, BGR24, YU12 and YV12 in addition to mentioned above because it is from libv4l family.

USB Camera: Logitech c270 Resolutions: various Pixel formats: YUYV and MJPG (checked with the command v4l2-ctl --list-formats-ext) Beaglebone OpenCV 2.4.2 (default version in Angstrom Distribution) edit retag flag offensive close merge delete

2015年3月20日 · I read a BGR image: bgr=cv2.imread('bgr.png') I convert it to YUV color space: yuv=cv2.cvtColor(bgr,cv2.COLOR_BGR2YUV) Now I set U and V values of yuv image to 0: for i in range(yuv.shape[0]): for j in range(yuv.shape[1]): yuv[i,j,1]=0 yuv[i,j,2]=0 Now I convert yuv to BGR and display it: BGR=cv2.cvtColor(yuv,cv2.COLOR_YUV2BGR) cv2.imshow('BGR',BGR) …

2013年9月9日 · Formats[1]: YUV 4:2:2 (YUYV) ( YUYV ) FOURCC: YUYV size: 1280x1024x16 size_count: 7 640x480 352x288 320x240 176x144 160x120 1280x800 1280x1024 But the only result I can get, it is a gray scale images.

$ v4l2-ctl --all Driver Info (not using libv4l2): Driver name : uvcvideo Card type : USB2.0 Camera Bus info : usb-0000:00:1d.0-1.5 Driver version: 3.2.40 Capabilities : 0x04000001 Video Capture Streaming Video input : 0 (Camera 1: ok) Format Video Capture: Width/Height : 640/480 Pixel Format : 'YUYV' Field : None Bytes per Line: 1280 Size Image ...

2019年9月7日 · Hello, thanks for your answer. Splitting and working with cvtColorTwoPlane like suggested crashes. But finally your suggest leads me to the rigth answer: