Enum DitheringMethod

名称: Aspose.Imaging 收藏: Aspose.Imaging.dll (25.4.0)

说话方法。

public enum DitheringMethod

Fields

FloydSteinbergDithering = 1

Floyd-Steinberg dithering 是一个更复杂的 dithering 算法,使用最接近的邻居的强度值。

ThresholdDithering = 0

最简单、最快的算法。

Examples

下面的例子加载了一个拉斯特图像,并使用不同的板块深度进行边界和流动直径。

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

                                                                                                                               using (Aspose.Imaging.Image image = Aspose.Imaging.Image.Load(dir + "sample.png"))
                                                                                                                               {
                                                                                                                                   Aspose.Imaging.RasterImage rasterImage = (Aspose.Imaging.RasterImage)image;

                                                                                                                                   // Perform threshold dithering using 4-bit color palette which contains 16 colors.
                                                                                                                                   // The more bits specified the higher quality and the bigger size of the output image.
                                                                                                                                   // Note that only 1-bit, 4-bit and 8-bit palettes are supported at the moment.
                                                                                                                                   rasterImage.Dither(Aspose.Imaging.DitheringMethod.ThresholdDithering, 4);

                                                                                                                                   rasterImage.Save(dir + "sample.ThresholdDithering4.png");
                                                                                                                               }

                                                                                                                               using (Aspose.Imaging.Image image = Aspose.Imaging.Image.Load(dir + "sample.png"))
                                                                                                                               {
                                                                                                                                   Aspose.Imaging.RasterImage rasterImage = (Aspose.Imaging.RasterImage)image;

                                                                                                                                   // Perform floyd dithering using 1-bit color palette which contains only 2 colors - black and white.
                                                                                                                                   // The more bits specified the higher quality and the bigger size of the output image.
                                                                                                                                   // Note that only 1-bit, 4-bit and 8-bit palettes are supported at the moment.
                                                                                                                                   rasterImage.Dither(Aspose.Imaging.DitheringMethod.FloydSteinbergDithering, 1);

                                                                                                                                   rasterImage.Save(dir + "sample.FloydSteinbergDithering1.png");
                                                                                                                               }