Bescos J, Strand T C
Appl Opt. 1978 Aug 15;17(16):2524-31. doi: 10.1364/AO.17.002524.
An optical spatial filtering system is described which color encodes the local spatial frequency content of an image. It is shown that partially coherent illumination has advantages over coherent or incoherent illumination in this system. Experimental results are shown which indicate that the system can be used to perform a simple type of texture-to-color conversion. The system could be used to enhance textural differences for a human observer or as a preprocessor which provides texture related information to a second image processing device.
描述了一种光学空间滤波系统，该系统对图像的局部空间频率内容进行颜色编码。结果表明，在该系统中，部分相干照明比相干照明或非相干照明具有优势。给出的实验结果表明，该系统可用于执行一种简单的纹理到颜色的转换。该系统可用于增强人类观察者的纹理差异，或作为向第二个图像处理设备提供纹理相关信息的预处理器。
