How to C#: Imaging
Using Imaging SDK for C#.NET
Winforms Controls
Image Load
Image Access and Modify
Choose image region to process
Choose image region to process
Home ›› XImage.Raster ›› C# Raster: Choose image region to process

How to C#: Choose Image Region to Process

Overview for How to Choose Image Region to Process


Prior to performing image processing on an image, you must specify whether the entire image, or a section of the image, should be processed. The Processor class provides two vehicles for specifying a section of the image to be processed.

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Steps to Select an image region or area to Process

Load an image with RasterImage object.

Create an image processor with ImageProcess object.

Set the region will be processed.

According to your needs, you can call the following method in ImageProcess.cs to process the select image region freely.

  public void WaveImage(double amplitude, double wave length)

  public void VignetteImage(double radius, double sigma, int x, int y)

  public void TrimImage()

  public void TransformResolution(int horiResolution, int vertResolution)

If you want to know more APIs to process images, please refer to the class ImageProcess.

Install XImage.Raster in C# Project

Add necessary references to your C#.NET project. Right-click the project and select "Add Reference..." to locate and add the following DLLs as project references;




Use corresponding namespaces;

  using RasterEdge.XImage.Raster;

Note: When you get the error "Could not load file or assembly 'RasterEdge.Imaging.Basic' or any other assembly or one of its dependencies. An attempt to load a program with an incorrect format", please check your configure as follows:


       If you are using x64 libraries/dlls, Right click the project -> Properties -> Build -> Platform target: x64.


       If using x86, the platform target should be x86.

Select an area or region to Process

You can specify whether process the entire image or just a section of the image.

Sample Code (process the whole image):

RasterImage img = new RasterImage(@input.jpeg);
//process the whole image. 
ImageProcess processor = new ImageProcess(img);
erImage img = new RasterImage(inputFilePath); 
//Convert format and save. 

Sample Code (process the image of the specified region):

RasterImage img = new RasterImage(@input.jpeg);
ImageProcess processor = new ImageProcess(img);
//set the area(0,0,100,100) to process
processor.SetArea = new Rectangle(0, 0, 100, 100);
//when the specified process is end , must set this flag to true.
processor.AreaProcessEnd = true;