1. A gray-scale image block, with pixel values shown in Table 1, is compressed using two different image coders. The results after reconstruction are given in Table 2 and 3, for the first and the second coder, respectively. Find mean square error (MSE) and peak signal to noise ratio (PSNR) (in dB) for both reconstructions. Which coder was more efficient in this case? 124 126 127 136 138 111 111 114 125 130 111 114 116 129 126 101 104 111 121 122 100 101 109 115 117 102 98 89 104 119 Table 1: The original image block. Each value represents a gray-scale pixel value. 111 114 121 126 129 132 131 101 114 119 125 131 117 111 106 112 124 121 100 102 106 105 118 102 98 87 105 121 125 121 Table 2: The reconstructed image block using Coder 1. Each value represents a gray-scale pixel value. 101 97 125 121 128 134 138 108 112 113 125 131 116 112 117 122 121 102 104 112 124 121 107 104 99 91 104 118 112 117 Table 3: The reconstructed image block using Coder 2. Each value represents a gray-scale pixel value. Answer: CODER1 MSE= CODER2 MSE= PSNR = PSNR = dB dB More efficient is CODER om) Focus