Adjust Contrast, Brightness, and Gamma of Images in C#

readme.md

Learn how to adjust contrast, brightness, and gamma of an image in C#: https://blog.aspose.com/2021/12/24/adjust-image-contrast-brightness-gamma-csharp/

adjust-image-brightness.cs

// Load an image in an instance of Image
using (Image image = Image.Load("image.png"))
{
    // Cast to raster image
    RasterImage rasterImage = (RasterImage)image;

    // Cache RasterImage for better performance
    if (!rasterImage.IsCached)
    {
        rasterImage.CacheData();
    }

    // Adjust the brightness
    rasterImage.AdjustBrightness(70);

    // Save image
    image.Save("image-updated-bightness.png");
}

adjust-image-contrast.cs

// Load an image in an instance of Image
using (Image image = Image.Load("image.png"))
{
    // Cast to raster image
    RasterImage rasterImage = (RasterImage)image;

    // Cache RasterImage for better performance
    if (!rasterImage.IsCached)
    {
        rasterImage.CacheData();
    }

    // Adjust contrast
    rasterImage.AdjustContrast(30);             

    // Save image
    image.Save("image-updated-contrast.png");
}

adjust-image-gamma.cs

// Load an image in an instance of Image
using (Image image = Image.Load("image.png"))
{
    // Cast to raster image
    RasterImage rasterImage = (RasterImage)image;

    // Cache RasterImage for better performance
    if (!rasterImage.IsCached)
    {
        rasterImage.CacheData();
    }

    // Adjust gamma
    rasterImage.AdjustGamma(2.2f, 2.2f, 2.2f);

    // Save image
    image.Save("image-updated-gamma.png");
}