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 ...

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)

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

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?

100x100 RGB image effectively has 3x100x100 bytes which when converted to YUV results in 3x100x100 bytes. Instead when this is converted to YUV2 (aka YUYV), this results in 4x100x100 bytes. And doubling the size of this image horizontally and vertically requires 4x(2x100)x(2x100). How do you get 150x100 and consequently 300x200?

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.

2012年7月5日 · 352x288 YUYV 432x240 MJPG 640x360 YUYV 640x480 YUYV 800x448 YUYV 800x600 MJPG 960x544 MJPG 960x720 MJPG 1280x720 MJPG While the video modes appear to change randomly, they do so in a predictable way. The same video modes are selected even using webcams of different models from different manufacturers.

2015年3月4日 · calculate the YUV of a pixel without color space transformation. Understanding YUV to BGR color spaces conversion

Hello, thanks for your answer. Splitting and working with cvtColorTwoPlane like suggested crashes. But finally your suggest leads me to the rigth answer: