Aspose.Imaging是一種高級圖像處理控件，允許開發(fā)人員創(chuàng)建，編輯，繪制或轉(zhuǎn)換圖像。圖像導(dǎo)出和轉(zhuǎn)換是API核心功能之一，它允許在不安裝Photoshop應(yīng)用程序或任何其他圖像編輯器的情況下保存為AdobePhotoshop®本機格式。

事實證明，Aspose.Imaging是處理各種圖像格式的強大API。除單頁圖像外，Aspose.Imaging還支持處理多頁圖像，包括GIF，TIFF，PSD，DICOM，CDR和WebP。

近期發(fā)布了Aspose.Imaging for .NET v21.6，此版本包含新功能和增強功能：改進多頁矢量格式到多頁光柵格式的導(dǎo)出，支持對隔行 GIF 圖像進行調(diào)整大小操作，還沒使用過的朋友可以點擊下載最新版Aspose.Imaging

新增與改善

用法示例

IMAGINGNET-4100 改進了多頁矢量格式到多頁光柵格式的導(dǎo)出

### Export CMX image with pages of different sizes to TIFF format
Aspose.Imaging allows you to specify rasterization options for each page during the export. The following source code sample demonstrates how to export multi-page CMX image to TIFF format:

static void Main()
{
    using (var image = (VectorMultipageImage)Image.Load("MultiPage2.cmx"))
    {
        // Create page rasterization options
        var pageOptions = CreatePageOptions<CmxRasterizationOptions>(image);

        // Create TIFF options
        var options = new TiffOptions(TiffExpectedFormat.TiffDeflateRgb) { MultiPageOptions = new MultiPageOptions { PageRasterizationOptions = pageOptions } };

        // Export image to TIFF format
        image.Save("MultiPage2.cmx.tiff", options);
    }
}

private static VectorRasterizationOptions[] CreatePageOptions<TOptions>(VectorMultipageImage image) where TOptions : VectorRasterizationOptions
{
    // Create page rasterization options for each page in the image
    return image.Pages.Select(x => x.Size).Select(CreatePageOptions<TOptions>).ToArray();
}

private static VectorRasterizationOptions CreatePageOptions<TOptions>(Size pageSize) where TOptions : VectorRasterizationOptions
{
    // Create the instance of rasterization options
    var options = Activator.CreateInstance<TOptions>();

    // Set the page size
    options.PageSize = pageSize;
    return options;
}

### Export CDR image to PDF format
The following source code sample shows you how to export CDR image to PDF format:

using (var image = (VectorMultipageImage)Image.Load("MultiPage2.cdr"))
{
    // Create page rasterization options
    var pageOptions = CreatePageOptions<CdrRasterizationOptions>(image);

    // Create PDF options
    var options = new PdfOptions { MultiPageOptions = new MultiPageOptions { PageRasterizationOptions = pageOptions } };

    // Export image to PDF format
    image.Save("MultiPage2.cdr.pdf", options);
}

IMAGINGNET-4078 支持將 16 bpp RGBA 5551 BMP 轉(zhuǎn)換為 32 bpp RGBA PNG

### Exporting RGB 16 Bpp BMP with 5,5,5,1 channels to RGBA 32 Bpp PNG


using (var image = Image.Load("tiger2.bmp"))
{
    image.Save("tiger2.bmp.png", new PngOptions() { ColorType = Aspose.Imaging.FileFormats.Png.PngColorType.TruecolorWithAlpha });
}

IMAGINGNET-4060 支持隔行 GIF 圖像的調(diào)整大小操作

using (Image image = Image.Load("cat_interlaced.gif"))
{
    // Perform resize operation
    image.ResizeHeightProportionally(400, ResizeType.HighQualityResample);

    // Export image to any raster format
    image.Save("cat_resized.png", new PngOptions());
}

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