How to get the YUV value for each pixel?
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Hi everyone
I am new to matlab, so any help would be appreciated.
I have an image and I need to get the YUV value for each pixel in the image.
Can anyone help? Thanks in advance
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Dishant Arora
2014 年 2 月 17 日
if you have a RGB image you can convert it into YUV using below mentioned equations:
Y = R*(0.299000) + G*(0.587000) + B*(0.114000);
U = R*(-0.168736) + G*(-0.331264) + B*(0.500000) + 128;
V = R*(0.500000) + G*(-0.418688) + B*(-0.081312) + 128;
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DGM
2021 年 11 月 3 日
編集済み: DGM
2021 年 11 月 4 日
That's not YUV. That's more or less YPbPr, or YCbCr without the margins. The offset implies that the RGB image is uint8-scaled, though if it were actually uint8, the operations would result in severe data truncation. The only case in which this would work is if R,G,and B were uint8-scaled floating-point data.
This covers general luma-chroma conversions, including YUV:
If actual YCbCr conversion is desired with margins, just use rgb2ycbcr().
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