CAJ | 학술논문

在彩色误差扩散网目调处理过程中,各色通道不同的误差滤波器设计将直接影响彩色网目调图像的质量.本文对基于阶调的误差扩散方法以及人眼视觉特性进行了分析研究,应用亮度和色度人眼视觉模型对误差扩散过程中的滤波器系数和阈值进行优化,实现了基于图像阶调与人眼视觉模型的彩色误差扩散网目调方法.实验结果表明,该方法能够有效地减少彩色网目调图像的人工纹理,并显著提高再现彩色图像的色彩还原精度.
재채색오차확산망목조처리과정중,각색통도불동적오차려파기설계장직접영향채색망목조도상적질량.본문대기우계조적오차확산방법이급인안시각특성진행료분석연구,응용량도화색도인안시각모형대오차확산과정중적려파기계수화역치진행우화,실현료기우도상계조여인안시각모형적채색오차확산망목조방법.실험결과표명,해방법능구유효지감소채색망목조도상적인공문리,병현저제고재현채색도상적색채환원정도.
In the process of color error diffusion halfioning, the quality of the color halftoning image will be affected directly by the design of the error diffusion filter with different color channels. This paper studied the method of error diffusion based on tone and the human visual system(HVS), optimized the filter coefficient and the threshold by applying the luminance and chrominance HVS, and the color error diffusion halftoning method based on the image tone and HVS had been received. The results showed that this method can reduce the artifacts in color halftoning images effectively and improve the accuracy of color rendition.