Dapatkan dan Cari Gambar di PDF

ImagePlacementAbsorber memungkinkan Anda untuk mencari di antara gambar di semua halaman dalam dokumen PDF.

Potongan kode berikut juga bekerja dengan pustaka Aspose.PDF.Drawing.

Untuk mencari seluruh dokumen untuk gambar:

1. Panggil metode Accept dari koleksi Pages. Metode Accept mengambil objek ImagePlacementAbsorber sebagai parameter. Ini mengembalikan koleksi objek ImagePlacement.
2. Loop melalui objek ImagePlacements dan ambil propertinya (Gambar, dimensi, resolusi, dan seterusnya).

Potongan kode berikut menunjukkan cara mencari dokumen untuk semua gambarnya.

// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void ExtractImagesFromPDF()
{
    // The path to the documents directory
    var dataDir = RunExamples.GetDataDir_AsposePdf_Images();

    // Open PDF document
    using (var document = new Aspose.Pdf.Document(dataDir + "SearchAndGetImages.pdf"))
    {
        // Create ImagePlacementAbsorber object to perform image placement search
        var abs = new Aspose.Pdf.ImagePlacementAbsorber();

        // Accept the absorber for all the pages
        document.Pages.Accept(abs);

        // Loop through all ImagePlacements, get image and ImagePlacement properties
        foreach (var imagePlacement in abs.ImagePlacements)
        {
            // Get the image using ImagePlacement object
            var image = imagePlacement.Image;

            // Display image placement properties for all placements
            Console.Out.WriteLine("image width: " + imagePlacement.Rectangle.Width);
            Console.Out.WriteLine("image height: " + imagePlacement.Rectangle.Height);
            Console.Out.WriteLine("image LLX: " + imagePlacement.Rectangle.LLX);
            Console.Out.WriteLine("image LLY: " + imagePlacement.Rectangle.LLY);
            Console.Out.WriteLine("image horizontal resolution: " + imagePlacement.Resolution.X);
            Console.Out.WriteLine("image vertical resolution: " + imagePlacement.Resolution.Y);
        }
    }
}

Untuk mendapatkan gambar dari halaman individu, gunakan kode berikut:

// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void ExtractImageFromAnIndividualPage()
{
    // The path to the documents directory
    var dataDir = RunExamples.GetDataDir_AsposePdf_Images();

    // Open PDF document
    using (var document = new Aspose.Pdf.Document(dataDir + "SearchAndGetImages.pdf"))
    {
        // Create ImagePlacementAbsorber object to perform image placement search
        var abs = new Aspose.Pdf.ImagePlacementAbsorber();

        // Accept the absorber for all the pages
        document.Pages[1].Accept(abs);
    }
}