LCD定标器中图像锐化模块的设计

Picture Sharpness Module Design for Scaler

在LCD定标器(Scaler)中实现缩放处理时,由于所采取算法的自身缺陷,会导致缩放后的图像对比度下降、边缘模糊,因此,有必要对图像进行锐化处理来进行图像质量补偿。首先介绍了定标器的后端处理模块的结构,在详细分析了锐化原理和算法的基础上,提出了锐化处理的方案,最后用硬件描述语言进行行为级描述,并给出了仿真的结果。

When LCD scaler is processing, with limitation of algorithm itself, the quality of output image becomes worse, such as contrast decreased, edge blured, so it is necessary for scaler to add picture sharpness module to compensate. This paper starts with the structure of back-end process, and sharpness process solution is presented on the base of detailedly analyzing the theory and algorithm of sharpening. Finally, this module is described with RTL behavior, and the results of the RTL simulation are presented.