将图像分成块-C＃ [英] dividing images into blocks-C#

问题描述

我正在开发一个基于C＃的图像处理应用程序。在该项目中，要完成一项任务，我想要一种机制将图像分成块。



假设我有一个图像，我想将该图像分成3X3矩阵，即9个部分。我怎么能这样做？

I'm developing a C# based image processing application.On that project, to do a task I want a mechanism to divide an image in to blocks.

Suppose i have an image and i want to split that image into 3X3 matrix i.e. 9 parts. How can i do that?

推荐答案

比如说，你需要创建一个代表单个块的独立位图。怎么样？创建所需大小的位图的新实例。比你需要在其中绘制一些图像。使用方法 System.Drawing.Graphics.FromImage 。它将为您提供在位图上绘制内容的实例。使用此实例和源位图，在目标（片段）位图上绘制源位图的一部分。不要忘记处理所有需要处理的东西;使用使用语句（不要与using指令混淆）。这就是全部。



请参阅：

https://msdn.microsoft.com/en-us/library/system.drawing.bitmap%28v=vs.110%29.aspx [ ^ ]，

https://msdn.microsoft.com/en-us/library/system.drawing.graphics%28v=vs.110%29.aspx [ ^ ]，

https：// msdn .microsoft.com / zh-cn / library / system.drawing.graphics.fromimage（v = vs.110）.aspx [ ^ ]，

https://msdn.microsoft.com/en-us/library/system.drawing.graphics.drawimage%28v=vs.110 ％29.aspx [ ^ ]。

-SA

Say, you need to create a separate bitmap representing a single block. How? Create a new instance of Bitmap of required size. Than you need to draw some image in it. Use the method System.Drawing.Graphics.FromImage. It will give you the instance to draw something on a bitmap. Using this instance and source bitmap, draw a part of the source bitmap on your target (fragment) bitmap. Don't forget to dispose all that needs to be disposed; use using statement for that (not to be mixed up with "using" directive). That's all.

Please see:
https://msdn.microsoft.com/en-us/library/system.drawing.bitmap%28v=vs.110%29.aspx[^],
https://msdn.microsoft.com/en-us/library/system.drawing.graphics%28v=vs.110%29.aspx[^],
https://msdn.microsoft.com/en-us/library/system.drawing.graphics.fromimage(v=vs.110).aspx[^],
https://msdn.microsoft.com/en-us/library/system.drawing.graphics.drawimage%28v=vs.110%29.aspx[^].

—SA

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