用光学方法实现图像数据压缩时对滤波器的精度要求
摘 要
为了使光学滤波器在空间频域进行小波变换时,能满足图像压缩的精度要求,通过利用光学滤波器在空间频域进行小波变换(或其他变换)来实现图像数据压缩时对滤波器的特殊要求的研究,结合人眼视觉特性(HVS)及视觉感知图像质量评价方法,推导并得出了用光学滤波器来实现图像数据压缩时的精度误差上限的估计值,从而为设计用于高质量图像数据压缩的此类光学滤波器提供了依据,仿真实验证实,光学滤波器能满足图像数据压缩的精度要求。
关键词
The Accuracy Requirement on Optical Filter Used in Image Data Compression
() Abstract
We studied the specific requirements on optical wavelet filter in spatial frequency domain for image data compression based on human visual system(HVS) and image perceptual quality evaluation criteria.The upper boundary estimation of the optical wavelet filter in frequency domain was derived and verified by simulation.It will be the bases in designing such kind of optical filter for high quality image data compression.
Keywords
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