lapped transforms for images. lapped transform is a very fast algorithm to replace dct.

Pass the Images Through Optics -- Use a Gaussian "Aperture Function" This code segement can use a measured aperture function just as easily - simply replace the next five lines by "load measured_aperture" where measured_aperture is the measur

C语言，三角函数，平方根快速算法。运算速度很快，可以用来替换部分标准库 math.h 内的函数-C, trigonometric functions, square root of the fast algorithm. Fast operation, can be used to replace part of the standard library math.h functions within the

linux下lda的实现，具体说明内附文件，使用方便(LDA detailed descr iption of the attached file, easy to use, fast hand, use only to replace the source file can be used)