convert BGRA8 image format to RGB format

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L
L 2021-10-12
评论： L 2021-10-16
Is there a built-in function for conversion of BGRA8 image to RGB image? If there is no available function for the conversion, is there a way to make this conversion?

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采纳的回答

Jan
Jan 2021-10-12
Do you have the pixels values as UINT8 array already? Then:
RGB = BGRA8(:, :, [3, 2, 1])
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L
L 2021-10-13
I have accessed the field again in the Command Window, but my RGB image is wrong.
Maybe there is a problem with the array conversion?
L
L 2021-10-13
编辑：L 2021-10-13
The issue with the structure is solved. The solution is to call the receive() function.
But, still there is a problem with the conversion from BGRA8 to RGB.
What can be the problem here?
Here is the screenshot, and the code. The BGRA8 image is 1010688x1 uint8 array.
msg = receive(sub);
img=msg.Data;
outImg = reshape(img, 672, 376, []);
outImg1=permute(outImg, [2 1 3 4]);
rgb=outImg1(:,:,[2 1 3]);
figure, imshow(rgb);

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更多回答（1 个）

Cam Salzberger
Cam Salzberger 2021-10-13
Since the image data is coming out of a ROS message, you can use the ROS functions to extract the image from it:
Message object - readImage method
Message struct - rosReadImage function
-Cam

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