Abstract
In this work, a scalable perceptual JPEG2000 encoder that exploits properties of the human visual system (HVS) is presented. The algorithm modifies the final three stages of a conventional JPEG2000 encoder. In the first stage, the quantization step size for each subband is chosen to be the inverse of the contrast sensitivity function (CSF). In bit-plane coding, two masking effects are considered during distortion calculation. In the final bitstream formation step, quality layers are formed corresponding to desired perceptual distortion thresholds. This modified encoder exhibits superior visual performance for remote sensing images compared to conventional JPEG2000 encoders. Additionally, it is completely JPEG2000 Part-1 compliant, and therefore can be decoded by any JPEG2000 decoder.
| Original language | English (US) |
|---|---|
| Journal | Proceedings of the International Telemetering Conference |
| Volume | 44 |
| State | Published - 2008 |
| Event | 44th Annual International Telemetering Conference and Technical Exhibition - Telemetry: Measure, Move, Record, Analyze...We Do It All, ITC/USA, 2008 - San Diego, CA, United States Duration: Oct 27 2008 → Oct 30 2008 |
Keywords
- JPEG2000
- Perceptual image coding
- Remote sensing images
- Scalable compression
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Instrumentation
- Computer Networks and Communications
- Signal Processing