how to calculate energy of each 8*8 blocks of DCT coefficient values?
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Hepl me out to compute energy of each pixel of image or set of pixel? will it be possble? They have given formula to calculate energy=summation(i,j) ||C||2? what does it mean?Mention some code to calculate energy of each pixel or block
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Nadia Shaik
il 29 Nov 2022
Hi Aberna,
I understand that you want to calculate the energy stored in DCT coefficients. The energy compaction property of DCT tells that you can reconstruct a signal from only a fraction of its DCT coefficients.
You can calculate the energy stored in DCT coefficients by applying 'norm' function to the DCT coefficients matrix. For more information please refer the example Energy Stored in DCT Coefficients.
I hope this helps.
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