how to convert RGB image into YCuCv model by using reversible colour transform ?

I need to perform the above asked method in my project.

[PRIYANKA]

But in one of project pdf's I studied that RGB to YCbCr transform may be the most frequently used one for the lossy compression of colour image .But I need to perform it for lossless compression.

Answer 1

[Thorsten]

See https://en.wikipedia.org/wiki/JPEG_2000#Color_components_transformation

 I = imread('peppers.png'); 
 R = I(:,:,1); G = I(:,:,2); B = I(:,:,3);
 Y = floor((R + 2*G + B)/4);
 Cb = B - G;
 Cr = R - G;

[PRIYANKA]

i need to convert RGB into YCuCv but not YCbCr, now would you please explain how to do this?

[Thorsten]

You probably mean Yuv. This term is used interchangeably with YCbCr for digital images; see my response to your other question.

[PRIYANKA]

i need to convert rgb into YCuCv by using Reversible color transform,so kindly give me the answer with explanation.

[PRIYANKA]

But in one of project pdf's I studied that RGB to YCbCr transform [7] may be the most frequently used one for the lossy compression of colour image .But I need to perform it for lossless compression.

[Thorsten]

Reversible color tranformation means lossless here. Please check the link I provided to see how to convert back to RGB.

[Image Analyst]

Just use imwrite() to create a PNG file. I don't know what it does internally, but it's the lossless compression method that is the most commonly used.