ResizeHeightProportionally
内容
[
隐藏
]ResizeHeightProportionally(int)
按比例调整高度。默认NearestNeighbourResample已使用。
public void ResizeHeightProportionally(int newHeight)
范围 | 类型 | 描述 |
---|---|---|
newHeight | Int32 | 新高度。 |
也可以看看
- class Image
- 命名空间 Aspose.Imaging
- 部件 Aspose.Imaging
ResizeHeightProportionally(int, ResizeType)
按比例调整高度。
public virtual void ResizeHeightProportionally(int newHeight, ResizeType resizeType)
范围 | 类型 | 描述 |
---|---|---|
newHeight | Int32 | 新高度。 |
resizeType | ResizeType | 调整大小的类型。 |
例子
此示例加载图像并使用各种调整大小方法按比例调整其大小。仅指定高度,自动计算宽度。
[C#]
string dir = "c:\\temp\\";
using (Aspose.Imaging.Image image = Aspose.Imaging.Image.Load(dir + "sample.gif"))
{
// 使用最近邻重采样放大 2 倍。
image.ResizeHeightProportionally(image.Height* 2, Aspose.Imaging.ResizeType.NearestNeighbourResample);
image.Save(dir + "upsample.nearestneighbour.gif");
}
using (Aspose.Imaging.Image image = Aspose.Imaging.Image.Load(dir + "sample.gif"))
{
// 使用最近邻重采样缩小 2 倍。
image.ResizeHeightProportionally(image.Height / 2, Aspose.Imaging.ResizeType.NearestNeighbourResample);
image.Save(dir + "upsample.nearestneighbour.gif");
}
using (Aspose.Imaging.Image image = Aspose.Imaging.Image.Load(dir + "sample.gif"))
{
// 使用双线性重采样放大 2 倍。
image.ResizeHeightProportionally(image.Height* 2, Aspose.Imaging.ResizeType.BilinearResample);
image.Save(dir + "upsample.bilinear.gif");
}
using (Aspose.Imaging.Image image = Aspose.Imaging.Image.Load(dir + "sample.gif"))
{
// 使用双线性重采样缩小 2 倍。
image.ResizeHeightProportionally(image.Height / 2, Aspose.Imaging.ResizeType.BilinearResample);
image.Save(dir + "downsample.bilinear.gif");
}
使用分段掩码加快分段过程
[C#]
// 屏蔽导出选项
Aspose.Imaging.ImageOptions.PngOptions exportOptions = new Aspose.Imaging.ImageOptions.PngOptions();
exportOptions.ColorType = Aspose.Imaging.FileFormats.Png.PngColorType.TruecolorWithAlpha;
exportOptions.Source = new Aspose.Imaging.Sources.StreamSource(new System.IO.MemoryStream());
Aspose.Imaging.Masking.Options.MaskingOptions maskingOptions = new Aspose.Imaging.Masking.Options.MaskingOptions();
// 使用 GraphCut 聚类。
maskingOptions.Method = Masking.Options.SegmentationMethod.GraphCut;
maskingOptions.Decompose = false;
maskingOptions.Args = new Aspose.Imaging.Masking.Options.AutoMaskingArgs();
// 背景颜色将是透明的。
maskingOptions.BackgroundReplacementColor = Aspose.Imaging.Color.Transparent;
maskingOptions.ExportOptions = exportOptions;
string dir = "c:\\temp\\";
using (Aspose.Imaging.RasterImage image = (Aspose.Imaging.RasterImage)Aspose.Imaging.Image.Load(dir + "BigImage.jpg"))
{
Aspose.Imaging.Size imageSize = image.Size;
// 减小图像大小以加快分割过程
image.ResizeHeightProportionally(600, Aspose.Imaging.ResizeType.HighQualityResample);
// 创建 ImageMasking 类的实例。
Aspose.Imaging.Masking.ImageMasking masking = new Aspose.Imaging.Masking.ImageMasking(image);
// 将源图像分成几个簇(段)。
using (Aspose.Imaging.Masking.Result.MaskingResult maskingResult = masking.Decompose(maskingOptions))
{
// 获取前景蒙版
using (Aspose.Imaging.RasterImage foregroundMask = maskingResult[1].GetMask())
{
// 将蒙版的大小增加到原始图像的大小
foregroundMask.Resize(imageSize.Width, imageSize.Height, Aspose.Imaging.ResizeType.NearestNeighbourResample);
// 将掩码应用于原始图像以获得前景段
using (Aspose.Imaging.RasterImage originImage = (Aspose.Imaging.RasterImage)Aspose.Imaging.Image.Load(dir + "BigImage.jpg"))
{
Aspose.Imaging.Masking.ImageMasking.ApplyMask(originImage, foregroundMask, maskingOptions);
originImage.Save(dir + "BigImage_foreground.png", exportOptions);
}
}
}
}
也可以看看
- enum ResizeType
- class Image
- 命名空间 Aspose.Imaging
- 部件 Aspose.Imaging
ResizeHeightProportionally(int, ImageResizeSettings)
按比例调整高度。
public virtual void ResizeHeightProportionally(int newHeight, ImageResizeSettings settings)
范围 | 类型 | 描述 |
---|---|---|
newHeight | Int32 | 新高度。 |
settings | ImageResizeSettings | 图像调整大小设置。 |
也可以看看
- class ImageResizeSettings
- class Image
- 命名空间 Aspose.Imaging
- 部件 Aspose.Imaging