JpegOptions

JpegImage.JpegOptions property

获取用于创建或加载此文件的 JPEG 选项JpegImage实例.

public JpegOptions JpegOptions { get; }

适当的价值

JPEG 选项。

例子

以下示例显示如何从 JPEG 图像中提取标题信息。

[C#]

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

using (Aspose.Imaging.FileFormats.Jpeg.JpegImage image = (Aspose.Imaging.FileFormats.Jpeg.JpegImage)Image.Load(dir + "original.jpg"))
{
    Aspose.Imaging.ImageOptions.JpegOptions jpegOptions = image.JpegOptions;

    System.Console.WriteLine("The number of bits per channel: {0}", jpegOptions.BitsPerChannel);
    System.Console.WriteLine("The max allowed size for all internal buffers: {0}", jpegOptions.BufferSizeHint);
    System.Console.WriteLine("The color type: {0}", jpegOptions.ColorType);
    System.Console.WriteLine("The compression type: {0}", jpegOptions.CompressionType);
    System.Console.WriteLine("The image quality: {0}", jpegOptions.Quality);

    if (jpegOptions.ResolutionSettings != null)
    {
        System.Console.WriteLine("The horizontal resolution: {0}", jpegOptions.ResolutionSettings.HorizontalResolution);
        System.Console.WriteLine("The vertical resolution: {0}", jpegOptions.ResolutionSettings.VerticalResolution);
    }

    for (int i = 0; i < jpegOptions.HorizontalSampling.Length; i++)
    {
        System.Console.WriteLine("The sampling for component {0}: {1}x{2}", i, jpegOptions.HorizontalSampling[i], jpegOptions.VerticalSampling[i]);
    }
}

//输出看起来像这样：
//每个通道的位数：8
//所有内部缓冲区的最大允许大小：0
//颜色类型：YCbCr
//压缩类型：基线
//图像质量：75
//组件0的采样：1x1
//组件1的采样：1x1
//组件2的采样：1x1

也可以看看

Jfif RawDataFormat