Subimage Size and Transform Coding Performance Reconstructed DCT Coefficients by using 25% of coefficients (CR=4:1) with 8x8 sub- images Zoomed detail Zoomed detail Subimage size: Original 2x2 pixels Zoomed detail Zoomed detail Subimage size: Subimage size: 4x4 pixels 8x8 pixelsSubimage Size and Transform Coding Performance Zoomed detail Original Reconstructed by using 25% of coefficients (CR = 4:1) with 8x8 sub￾images DCT Coefficients Zoomed detail Subimage size: 8x8 pixels Zoomed detail Subimage size: 2x2 pixels Zoomed detail Subimage size: 4x4 pixels