任何人都可以告诉我sobel边缘检测的快速执行c#代码. [英] anyone please tell me the fast execting c# code for sobel edge detect..I am new to image processing

问题描述

你好，
我是图像处理的新手，请有人提出在c#中最快执行sobel边缘检测的方法.
我冲浪了很多，但是没有用....

在此先感谢....

hello,
I am new to the concept of image processing,please anyone suggest the fastest execution of sobel edge detection in c#.
I surfed a lot but no use....

thanks in advance....

推荐答案

这是一篇有关sobel边缘检测的好文章


使用C#和GDI +进行虚拟的傻瓜图像处理-第3部分-边缘检测过滤器 [

this is a good article for sobel edge detection


Image Processing for Dummies with C# and GDI+ Part 3 - Edge Detection Filters[^]

具有你看过OpenCV? opencv.willowgarage.com

不是C#，而是巨大的资源.与其尝试在C#中重做，不如考虑使用本机C/C ++ OpenCV东西，并根据需要从C#导入/链接到DLL API.可能不像C#那样友好，但是我相信它是快速可靠的.

Have you looked at OpenCV? opencv.willowgarage.com

Not C#, but a great resource. Rather than trying to redo things in C#, I''d probably consider using the native C/C++ OpenCV stuff and import / link to the DLL APIs from C# as required. Might not be quite as friendly as if it was all in C#, but I''d trust it to be fast and reliable.

感谢您的回复...
谁能告诉我如何将下面的代码转换为不安全的代码...

位图box1，box2;
int fxr，fyr，rr;

fxr = -1 * box1.GetPixel(i，j-1).R + box1.GetPixel(i，j).R-box1.GetPixel(i + 1，j).R + box1.GetPixel(i-1， j-1).R-box1.GetPixel(i-1，j + 1).R +
box1.GetPixel(i + 1，j + 1).R;

fyr = box1.GetPixel(i，j-1).R + box1.GetPixel(i-1，j).R + box1.GetPixel(i，j).R-box1.GetPixel(i-1，j + 1) ).R-box1.GetPixel(i + 1，j-1).R-box1.GetPixel(i + 1，j + 1).R;

rr = Math.Sqrt(Math.Abs​​(fxr * fxr)+ Math.Abs​​(fyr * fyr));
如果(rr< 0)rr = 0;
如果(rr> 255)rr = 255;
颜色cc = Color.FromArgb(Convert.ToInt32(rr)，Convert.ToInt32(rr)，Convert.ToInt32(rr));
box2.SetPixel(i，j，cc);

thanks for reply...
can anyone tell me how to convert below code into unsafe code...

Bitmap box1,box2;
int fxr,fyr,rr;

fxr = -1 * box1.GetPixel(i, j - 1).R + box1.GetPixel(i, j).R - box1.GetPixel(i + 1, j).R + box1.GetPixel(i - 1, j - 1).R - box1.GetPixel(i - 1, j + 1).R +
box1.GetPixel(i + 1, j + 1).R;

fyr = box1.GetPixel(i, j - 1).R + box1.GetPixel(i - 1, j).R + box1.GetPixel(i, j).R - box1.GetPixel(i - 1, j + 1).R - box1.GetPixel(i + 1, j - 1).R - box1.GetPixel(i + 1, j + 1).R;

rr = Math.Sqrt(Math.Abs(fxr * fxr) + Math.Abs(fyr * fyr));
if (rr < 0) rr = 0;
if (rr > 255) rr = 255;
Color cc = Color.FromArgb(Convert.ToInt32(rr), Convert.ToInt32(rr), Convert.ToInt32(rr));
box2.SetPixel(i, j, cc);

这篇关于任何人都可以告诉我sobel边缘检测的快速执行c#代码.的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！