C＃中的对比度测量 [英] Contrast Measuring in C#

问题描述

问候，



我是C-sharp的新手，我正在尝试在数码显微镜上实现自动对焦设置。我计划将相机放在一个小轴上，让相机拍摄几张不同距离的照片。我希望程序选择具有最高对比度的图片（最不模糊的图片）。在研究这个主题时，我发现有几种方法可以做到这一点，例如FFT，相位测量和对比度测量。我想使用对比度测量方法，只选择具有最高对比度的图片，但我找不到任何有关在Visual C＃中实现它的信息。有没有人对如何解决这个问题有任何想法？



谢谢，

John K

Greetings,

I am new to C-sharp and I am trying to implement an auto focus setup on a digital microscope. I plan to have the camera on a small axis and have the camera take a couple of pictures at different distances. I would like the program to pick to picture that has the highest contrast(the least blurred picture). While researching this topic I found out there are several ways of doing this such as the FFT, phase measurement, and contrast measurement. I would like to use the contrast measurement method and just pick the picture with the highest contrast but I could not find any information on implementing that in Visual C#. Does anyone have any ideas as to how I could resolve this issue?

Thank you,
John K

推荐答案

首先，忘记 PictureBox 。它与图像完全无关，特别是对其测量。由于这是一个常见的错误，请查看我过去的答案：

如何从旧图纸中清除面板 [ ^ ]，

用C＃绘制一个矩形 [ ^ ]，

在图片框中附上图片 [ ^ ]。



图像是位图，而不是控件。



获取所有信息在你需要使用的图像上 System.Drawing.Bitmap.LockBits ：

http://msdn.microsoft.com/en-us/library/system.drawing.bitmap.lockbits.aspx [< a href =http://msdn.microsoft.com/en-us/library/system.drawing.bitmap.lockbits.aspxtarget =_ blanktitle =New Window> ^ ]。< br $> b $ b

更好的是，我推荐着名的开源AForge.Net库：

http://en.wikipedia.org/wiki/AForge.NET [ ^ ]，

http：/ /www.aforgenet.com/ [ ^ ]。



另见 Andrew Kirillov 撰写的CodeProject文章，作者AForge.Net ： http://www.codeproject.com/Articles/Andrew-Kirillov#articles [ ^ ]。

-SA

First of all, forget the PictureBox. It is totally irrelevant to image, and especially to its measurement. As this is a usual mistake, please see my past answers:
How do I clear a panel from old drawing[^],
draw a rectangle in C#[^],
Append a picture within picturebox[^].

The image is the bitmap, not the control.

To get all information from an image you need to use System.Drawing.Bitmap.LockBits:
http://msdn.microsoft.com/en-us/library/system.drawing.bitmap.lockbits.aspx[^].

Better yet, I would recommend well-known open-source AForge.Net library:
http://en.wikipedia.org/wiki/AForge.NET[^],
http://www.aforgenet.com/[^].

See also the CodeProject articles by Andrew Kirillov, the author of AForge.Net: http://www.codeproject.com/Articles/Andrew-Kirillov#articles[^].

—SA

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