摘要： 以JPEG 2000作为编码框架，应用基于带内活跃性视觉模型(IaCLA)，提出视觉量化编码方法。该方案基于人类视觉系统掩盖效应设计量化器：利用非线性变换，以实现视觉亮度掩盖和对比掩盖，从而自适应调节量化步长和编码块率失真度。

关键词: 视觉模型, JPEG, EBCOT算法

Abstract: This paper presents a new quantizor scheme based on the IaCLA model derived from the intra-band masking.lt use a nonlinear transform to exploit the visual masking such as brightness masking and contrast masking, etc. The proposed approach can efficiently protect low amplitude wavelet coefficient and discriminate the simple edge even in the smooth region.

中图分类号: 

• TN919.8