• Dec 3, 2025 matlab code for image watermarking using dct d_blocks,1) for j = 1:size(watermarked_blocks,2) if bit_idx > length(watermark_bits) break; end block_dct = dct2(watermarked_blocks{i,j}); coeff = block_dct(4,4); % Determine bit based on coefficient value if coeff > 0 extracted_bits(bit_idx) = 1; else Question Answer What is the basic approac By Ms. Maxine Pagac
