已知图象4点坐标和转换后图像相对应4点坐标， 利用openCV求出homograghy 3x3 矩阵， 然后输出变换后图像,There is an input image called "warpin". The goal is to warp this image so that the tiles are approximately square, that is the camera is rotated to look down, which produces an image call

dct隐写技术matlab实现资料。算法原理：通过在一个图像块中调整两个DCT系数的相对大小，隐藏秘密信息。 将载体图像分为8×8的块，做二维DCT变换 用来表示选中的两个系数的坐标对于第i bit秘密信息 if（要隐藏信息‘1’） make else make 逆DCT变换，还原图像 -dct steganography matlab implementation information. Algorithm principle: an image bl

个人所写matlab代码，应用坐标变换原理模拟行星运动轨迹。其中涉及figure句柄、矩阵变换与图形object等等。-Matlab code, the use of coordinate transformation principle to simulate the planetary motion trajectory. Which involves figure handles, matrix transformations and graphical objects, and so o