I extracted frames from yuv file but frames are black, and how can apply depth's yuv file on left camera yuv file?

Depth base Image Rendering

Image Analyst 2022-4-24

I have absolutely no idea what that means. Is yuv the color space? Where does the depth information come from? What does "apply depth's yuv file" mean? What is "depth" and how does it own a yuv file? Assuming depth did have a YUV file, what does it mean to "apply" it?

In general to see a floating point image you should use [], like

imshow(depthImage, []);
imshow(yImage, []);
imshow(yuv(:, :, 3), []);

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DGM 2022-4-25

编辑：DGM 2022-4-25

If you extracted frames from a YUV file and they're "black", then

What format is the file and how did you "extract" them?
Did you convert the YCbCr data to RGB? If so, how?
What is the class and data range of the output?

Sahar Akhtar 2022-4-26

I extracted frame from a yuv video image and formate is yuv I extracted by using this code and did not convert it in rgb is it necessary to convert in rgb and how to convert it?

for iframe=1:nframe

frame=read((iframe-1)*frame_length+1:iframe*frame_length);

yImage = reshape(frame(1:width*height), width, height)';

uImage = reshape(frame(width*height+1:1.25*width*height), width/2, height/2)';

vImage = reshape(frame(1.25*width*height+1:1.5*width*height), width/2, height/2)';

y(:,:,nframe)=yImage;

u(:,:,nframe)=uImage;

v(:,:,nframe)=vImage;

end

c = 0;

for iFrame = 25:10:120

c = c + 1;

subplot(5,4,c), imshow(y(:,:,iFrame));

title(['frame #', num2str(iFrame)]);

end

DGM 2022-4-26

在 MATLAB Online 中打开

It's not clear to me what read() method you're using. That doesn't doesn't look like it makes sense for the videoreader method by the same name. Since I don't know what read() is and you never said what the class or range of the data is, I really have nothing to go on.

If all you want to see is luma, you should be able to just use Y without converting to RGB. Since nobody knows what the class or range of the image data is, maybe you can at least get something to show up if you use an implicit displayrange parameter when calling imshow().

imshow(Y(:,:,frame),[])

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