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A comparative study of advanced frequency-domain coding techniques in compression of infrared line-scan images
| Venue: | QIRT 1998, Lodz Poland |
| Citations: | 1 - 0 self |
BibTeX
@INPROCEEDINGS{Milovanovic_acomparative,
author = {D Milovanovic and B Wi~cek2 and A Marincic\ and G Petrovic and Z Barbaric},
title = {A comparative study of advanced frequency-domain coding techniques in compression of infrared line-scan images},
booktitle = {QIRT 1998, Lodz Poland},
year = {},
pages = {135--139}
}
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Abstract
Abstract A comparative study of transform coding techniques in data compression of IRLS (InfraRed LineScanner) images is described in this paper. In performance evaluation of block transform and wavelet image coders, we first carefully formed two sets of "good" basis functions: 4 types of generalized overlapped block transform (LOT) and 3 types of biorthonormal discrete wavelets transform (OWT). We found by extensive computer simulation on IRLS representative test-images, type and order of transform in the most efficient scalar quantized-entropy coder in each set for compression ratio from 10: 1 to 50: 1, based on objective and subjective quality measures of decoded test images. Finally, in performance comparison of the most efficient generalized block transform and wavelet coder we found that biorthogonal Ooubechies OWT based coder outperforms standard OCT and optimized LOT coders. Additionally, OWT coder gives possibility for further research on spatial image segmentation and terrainlaltitude adaptive IRLS image coding.
