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Using Imaging SDK for C#.NET
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Color and Contrast
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How to C#: Modify Color and Contrast


Overview for How to Modify Color and Contrast




Overview



By using the XImage.Raster SDK, you can modify the image's color and contrast by assigning it to the processor. The same image displayed on different screen may be have a different perception about the image's intensities. The GammaImage method will adjust red, green and blue three channels with gamma parameter, or you can choose the GammaImageChannel method to adjust the three channels individually. If you are not sure what is the exactly value to use, call the AutoGammaImage method. Also, the method BtightnessContrastImage can modify the image's brightness and contrast individually or both two.


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Steps to Modify Color and Contrast



Load an image with RasterImage object.


Create an image processor with ImageProcess object.


Call the method BrightnessContrastImage of ImageProcess object to complete the task flopping image.


Save the modified image to an image file on the disk.


In order to acheive the work, please refer to the following steps.




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;


  RasterEdge.Imaging.Basic.dll


  RasterEdge.XImage.Raster.Core.dll


  RasterEdge.XImage.Raster.dll


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.




How to Modify Color and Contrast



Sample Code (modify image color and contrast):




RasterImage img = new RasterImage(@"F:\input.tif");
ImageProcess process = new ImageProcess(img);

//modify the brightness and contrast
process.BrightnessContrastImage(100F, 100F);
//If the image has multiple frames,>
//Only modify the brightness and contrast of the second page
process.BrightnessContrastImage(100F, 100F, 1);
img.Save(@"C:\output.tif">);