How are the luminance and subsampled chrominance arranged in the jpeg stream?

[sujith4u87]

I need to known how the luminance and subsampled chrominance are arranged in the jpeg stream.

I have a image of 512 * 512,when it undergoes 8 * 8 block arrangement, results in 4096 block.The chrominance undergoes downsampling in both horizontal and vertical,results in 256 * 256 ,and then arranged in 8 * 8 gives 1024 blocks,

Then how it arranged in jpeg file after the header information.


I think that
Y1 Y2 Y3 Y4 Cb1 Cr1.......... Y4093 Y4094 Y4095 Y4096 Cb1024 Cr1024

Whether it is correct?

 

[mk_dexter]

Re: JPEG COMPRESSION

There is some http://www.pcs-ip.eu/index.php/main/edu/1w tutorial