若干次压缩后图像信噪比的变化情况，有子程序实现

canny检测器是很有效的边缘检测器，该函数可以实现对目标图像的边缘提取。该方法总结如下：1.图像使用带有指定标准差的高斯滤波器来平滑，以此减少噪声；2.在每一点计算局部梯度和边缘方向；3.第二步中确定的边缘点会导致梯度幅度图像中出现脊，然后追踪所有脊的顶部，并将所有不再脊顶部的像素设置为0；4.执行边缘链接-canny detector is very effective edge detector, this function can be achieved on the target image edge detection. This method is summarized as follows: 1. Image used with the specified standard deviation of the Gaussian filter to smooth out, thereby reducing the noise 2. In the calculation of each point of local gradient and edge direction 3. The second step in determining the edge points will led to the image gradient magnitude ridge appears, and then keep track of all of the top of the ridge, and ridge at the top of all the pixels are no longer set to 0 4. the implementation of the edge link

计算机图形学课程作业 中点椭圆算法实现 -Computer Graphics coursework midpoint ellipse algorithm

基于遗传算法的图像边缘检测算法，与Robert算子、bobel算子、prewitt算子、kirsch算子、gauss－laplace算子的结果进行了对比。-Based on genetic algorithm for image edge detection algorithm, with Robert operator, bobel operator, prewitt operator, kirsch operator, gauss-laplace operator of the results were compared.

multi-surface plotter.

读取AutoCAD文件中内嵌的缩略图, 可以读取从AutoCAD版本10~2005. 该文件是一个UNIT,请建立工程并产生新例调用它-read AutoCAD documents embedded thumbnail, can be read from AutoCAD version 10 ~ 2005. This document is a UNIT, and works to establish new cases have called it

这是一个png文件的编辑码程序。可以在bmp和png之间相互转化- This is a png document edition code procedure. May mutually transforms between bmp and png

该实例演示了,如何在VB程序开发中控制并从扫描仪中获取扫描图像的例子,其实很简单.-the examples demonstrated how the Visual Basic programming and control from the scanner to obtain the scanned image example, it is actually very simple.

一个基于c的数字水印系统，有很好的说明技术，希望您能喜欢-a c-based digital watermarking system, a very good note, I hope you will like

 Harris Corner是最典型的角点检测子Corner Detector。角点经常被检测在边缘的交界处、被遮挡的边缘、纹理性很强的部分。满足这些条件一般都是稳定的、重复性比较高的点，所以实际上他们是不是角点并不重要（因为我们的目标就是找一些稳定、重复性高的点以作为特征点）。

制作马赛克效果的例子程序-mosaic effect produced examples of procedures