Research Article
A Novel Psychovisual Threshold on Large DCT for Image Compression
Table 3
The quantization value on each frequency order for chrominance.
| 17 | 13 | 10 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 10 | 10 | 12 | 12 | 17 | 18 | 27 | 27 | 43 | 44 | 68 | 12 | 10 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 10 | 10 | 12 | 12 | 17 | 18 | 27 | 28 | 43 | 44 | 67 | 69 | 11 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 9 | 10 | 12 | 12 | 17 | 18 | 26 | 28 | 42 | 45 | 67 | 69 | 97 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 9 | 10 | 12 | 12 | 17 | 18 | 26 | 28 | 42 | 45 | 66 | 70 | 96 | 97 | 9 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 9 | 10 | 12 | 13 | 16 | 18 | 26 | 29 | 41 | 46 | 66 | 70 | 95 | 98 | 123 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 9 | 10 | 11 | 13 | 16 | 19 | 26 | 29 | 41 | 46 | 65 | 71 | 94 | 99 | 123 | 124 | 8 | 8 | 8 | 8 | 9 | 9 | 9 | 10 | 11 | 13 | 16 | 19 | 25 | 29 | 40 | 47 | 65 | 72 | 94 | 99 | 122 | 125 | 142 | 8 | 8 | 9 | 9 | 9 | 9 | 10 | 11 | 13 | 16 | 19 | 25 | 30 | 40 | 47 | 64 | 72 | 93 | 100 | 122 | 125 | 142 | 143 | 8 | 9 | 9 | 9 | 9 | 10 | 11 | 13 | 16 | 19 | 25 | 30 | 40 | 48 | 64 | 73 | 92 | 101 | 121 | 126 | 142 | 143 | 149 | 9 | 9 | 9 | 9 | 10 | 11 | 13 | 16 | 20 | 24 | 30 | 39 | 48 | 63 | 73 | 92 | 102 | 121 | 126 | 141 | 143 | 149 | 150 | 9 | 9 | 9 | 10 | 11 | 13 | 15 | 20 | 24 | 31 | 39 | 49 | 63 | 74 | 91 | 102 | 120 | 127 | 141 | 144 | 149 | 150 | 143 | 9 | 9 | 10 | 11 | 14 | 15 | 20 | 24 | 31 | 38 | 49 | 62 | 75 | 91 | 103 | 119 | 128 | 141 | 144 | 149 | 150 | 143 | 142 | 9 | 10 | 11 | 14 | 15 | 21 | 24 | 32 | 38 | 50 | 62 | 75 | 90 | 104 | 119 | 129 | 140 | 145 | 149 | 150 | 145 | 141 | 122 | 11 | 11 | 14 | 15 | 21 | 23 | 32 | 37 | 50 | 61 | 76 | 89 | 105 | 118 | 129 | 140 | 145 | 149 | 149 | 144 | 141 | 123 | 121 | 11 | 14 | 15 | 21 | 23 | 32 | 37 | 51 | 61 | 77 | 89 | 105 | 118 | 130 | 139 | 145 | 149 | 149 | 145 | 140 | 124 | 119 | 89 | 14 | 14 | 21 | 23 | 33 | 37 | 52 | 61 | 77 | 88 | 106 | 118 | 130 | 139 | 146 | 149 | 149 | 145 | 140 | 126 | 118 | 91 | 87 | 14 | 22 | 23 | 33 | 36 | 52 | 60 | 78 | 87 | 107 | 117 | 131 | 138 | 146 | 149 | 149 | 146 | 139 | 127 | 116 | 93 | 84 | 48 | 22 | 23 | 33 | 36 | 53 | 60 | 79 | 86 | 108 | 116 | 131 | 138 | 146 | 149 | 149 | 146 | 138 | 128 | 115 | 95 | 82 | 51 | 46 | 22 | 34 | 35 | 54 | 59 | 79 | 85 | 109 | 116 | 132 | 137 | 147 | 149 | 149 | 146 | 137 | 129 | 113 | 97 | 79 | 54 | 43 | 34 | 35 | 55 | 59 | 80 | 85 | 109 | 115 | 132 | 136 | 147 | 149 | 149 | 147 | 137 | 130 | 112 | 99 | 77 | 57 | 41 | 35 | 56 | 58 | 81 | 84 | 110 | 114 | 133 | 136 | 147 | 149 | 148 | 147 | 136 | 131 | 110 | 101 | 74 | 60 | | 56 | 58 | 81 | 83 | 111 | 114 | 134 | 135 | 148 | 149 | 148 | 148 | 135 | 132 | 108 | 103 | 72 | 63 | | 57 | 82 | 83 | 112 | 113 | 134 | 135 | 148 | 149 | 148 | 148 | 134 | 133 | 107 | 105 | 69 | 66 | |
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