Table 2.
Bit Rates after Lossless Compression
| Image | 3-D SPIHT | AT-SPIHT | |||||
|---|---|---|---|---|---|---|---|
| (GOS Sizes) | GOS | 8 | 16 | 8 | 16 | 24/32/88 | 48/64/176 |
| Aperts | S+P | 1.1197 | 1.0543 | 1.1020 | 1.0397 | 1.0345 | 1.0238 |
| (8,16,24,48) | I(2,2) | 1.0428 | 0.9738 | 1.0188 | 0.9522 | 0.9455 | 0.9285 |
| I(4,2) | 1.0250 | 0.9558 | 1.0028 | 0.9375 | 0.9300 | 0.9147 | |
| Carotid | S+P | 1.5995 | 1.4977 | 1.5856 | 1.4973 | 1.4608 | 1.4500 |
| (8,16,32,64) | I(2,2) | 1.6066 | 1.5272 | 1.5942 | 1.5340 | 1.5075 | 1.4930 |
| I(4,2) | 1.5901 | 1.5115 | 1.5791 | 1.5192 | 1.4935 | 1.4790 | |
| Liver_t1 | S+P | 2.5428 | 2.3997 | 2.5045 | 2.3690 | 2.3355 | 2.3103 |
| (8,16,24,48) | I(2,2) | 2.4913 | 2.3573 | 2.4368 | 2.3120 | 2.2605 | 2.2300 |
| I(4,2) | 2.4580 | 2.3270 | 2.4058 | 2.2857 | 2.2365 | 2.2075 | |
| Liver_t2 | S+P | 1.8923 | 1.7483 | 1.8817 | 1.7440 | 1.7085 | 1.6850 |
| (8,16,24,48) | I(2,2) | 1.9035 | 1.7823 | 1.8632 | 1.7463 | 1.6940 | 1.6730 |
| I(4,2) | 1.8667 | 1.7500 | 1.8295 | 1.7170 | 1.6665 | 1.6461 | |
| Ped chest | S+P | 2.2000 | 2.1045 | 2.1576 | 2.0540 | 2.0310 | 2.0080 |
| (8,16,32,64) | I(2,2) | 1.9988 | 1.8105 | 1.9244 | 1.7650 | 1.6920 | 1.6570 |
| I(4,2) | 1.9134 | 1.7835 | 1.9104 | 1.7550 | 1.6835 | 1.6490 | |
| Sag_head | S+P | 2.3468 | 2.2400 | 2.3108 | 2.2023 | 2.1795 | 2.1308 |
| (8,16,24,48) | I(2,2) | 2.1468 | 2.0563 | 2.1010 | 2.0060 | 1.9565 | 1.9300 |
| I(4,2) | 2.1422 | 2.0517 | 2.0965 | 2.0017 | 1.9530 | 1.9264 | |
| Skull | S+P | 2.3210 | 2.1134 | 2.4483 | 2.1661 | 2.1108 | 2.0790 |
| (8,16,32,64) | I(2,2) | 2.3318 | 2.1081 | 2.3159 | 2.0399 | 1.9852 | 1.9583 |
| I(4,2) | 2.2980 | 2.0464 | 2.2976 | 2.0250 | 1.9708 | 1.9443 | |
| Wrist | S+P | 1.4695 | 1.3689 | 1.4503 | 1.3550 | 1.3140 | 1.3090 |
| (8,16,88,176) | I(2,2) | 1.3758 | 1.2459 | 1.3430 | 1.2173 | 1.1445 | 1.1320 |
| I(4,2) | 1.3475 | 1.2231 | 1.3170 | 1.1976 | 1.1270 | 1.1150 | |