Experimetal results of IAD and CAI methods by
Sang-Yong Lee and Antonio Ortega
This web page is created to serve the purpose of illustrating the results
of CAI and IAD methods. For the IAD method, rotation transform and 64 by 64 block format conversion is used.
Experimental results
Images after applying interpolation (used as Reference images to calculate PSNR)
- Bilinear interpolation
- Interpolation by C. A. Laroche and M. A. Prescott
- Interpolation by T. Freeman
Comparison under a fixed compression ratio (~15:1)
- Bilinear interpolation, JPEG (PSNR gain: 1.39dB)
CAI: 37.858KB, 42.78dB
IAD: 37.826KB, 44.17dB
Side by side comparison (x6) [left: IAD, center: Reference, right: CAI]
- Interpolation by C. A. Laroche and M. A. Prescott, SPIHT (PSNR gain: 1.25dB)
CAI: 39.322KB, 42.93dB
IAD: 39.322KB, 44.18dB
- Interpolation by T. Freeman, SPIHT (PSNR gain: 0.64dB)
CAI: 39.322KB, 43.25dB
IAD: 39.322KB, 43.89dB
Side by side comparison (x6) [left: IAD, center: Reference, right: CAI]
Comparison under (visually) near-lossless compression (PSNR: ~48dB)
- Bilinear interpolation, JPEG (Bit-rate gain: 22.239KB)
CAI: 90.306KB, 42.62dB
IAD: 68.067KB, 47.82dB
- Interpolation by T. Freeman, SPIHT (Bit-rate gain: 11.207KB)
CAI: 88.376KB, 48.00dB
IAD: 77.169KB, 48.00dB