AdjustBrightness

public override void AdjustBrightness(int brightness)

[C#]

string dir = "c:\\temp\\";

using (Aspose.Imaging.Image image = Aspose.Imaging.Image.Load(dir + "sample.gif"))
{
    Aspose.Imaging.FileFormats.Gif.GifImage gifImage = (Aspose.Imaging.FileFormats.Gif.GifImage)image;

    // Установить значение яркости. Принятые значения яркости находятся в диапазоне [-255, 255].
    gifImage.AdjustBrightness(50);
    gifImage.Save(dir + "sample.AdjustBrightness.png", new Aspose.Imaging.ImageOptions.PngOptions());
}