public ActionResult ImageExtraction(string Browser, string submit1)
{
if (submit1 == "View Template")
{
string dataPath = ResolveApplicationDataPath("Brochure.pdf");
Stream file2 = new FileStream(dataPath, FileMode.Open, FileAccess.Read, FileShare.Read);
//Load the template document
PdfLoadedDocument ldoc = new PdfLoadedDocument(file2);
return(ldoc.ExportAsActionResult("InputTemplate.pdf", HttpContext.ApplicationInstance.Response, HttpReadType.Open));
}
//Load an existing PDF.
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(ResolveApplicationDataPath("Brochure.pdf"));
//Load first page.
PdfPageBase pageBase = loadedDocument.Pages[0];
//Extract images from first page.
System.Drawing.Image[] extractedImages = pageBase.ExtractImages();
//Stream the output to the browser.
if (Browser == "Browser")
{
ExportAsImage(extractedImages[0], "sample.jpeg", System.Drawing.Imaging.ImageFormat.Jpeg, HttpContext.ApplicationInstance.Response, HttpReadType.Open);
}
else
{
ExportAsImage(extractedImages[0], "sample.jpeg", System.Drawing.Imaging.ImageFormat.Jpeg, HttpContext.ApplicationInstance.Response, HttpReadType.Save);
}
return(View());
}
static void Main(string[] args)
{
//Instantiate an object of Spire.Pdf.PdfDocument
PdfDocument doc = new PdfDocument();
//Load a PDF file
doc.LoadFromFile("sample.pdf");
List <Image> ListImage = new List <Image>();
for (int i = 0; i < doc.Pages.Count; i++)
{
// Get an object of Spire.Pdf.PdfPageBase
PdfPageBase page = doc.Pages[i];
// Extract images from Spire.Pdf.PdfPageBase
Image[] images = page.ExtractImages();
if (images != null && images.Length > 0)
{
ListImage.AddRange(images);
}
}
if (ListImage.Count > 0)
{
for (int i = 0; i < ListImage.Count; i++)
{
Image image = ListImage[i];
image.Save("image" + (i + 1).ToString() + ".png", System.Drawing.Imaging.ImageFormat.Png);
}
System.Diagnostics.Process.Start("image1.png");
}
}
/// <summary>
/// Spire插件读取PDF中的二维码并保存二维码图片
/// </summary>
/// <param name="file">pdf文件路径</param>
public static void QrCodeToPdf(string file, string fileImg)
{
//加载PDF文档
PdfDocument doc = new PdfDocument();
doc.LoadFromFile(file);
List <Image> listImages = new List <Image>();
for (int i = 0; i < doc.Pages.Count; i++)
{
// 实例化一个Spire.Pdf.PdfPageBase对象
PdfPageBase page = doc.Pages[i];
// 获取所有pages里面的图片
Image[] images = page.ExtractImages(true); //page.ExtractImages();
if (images != null && images.Length > 0)
{
listImages.AddRange(images);
}
}
// 将提取到的图片保存到本地路径
if (listImages.Count > 0)
{
for (int i = 0; i < listImages.Count; i++)
{
Image image = listImages[i];
//image.Save(@"C:\Users\Administrator\Desktop\ABC\image" + (i + 3).ToString() + ".png", System.Drawing.Imaging.ImageFormat.Png);
image.Save(fileImg, System.Drawing.Imaging.ImageFormat.Png);
}
}
}
private static void SaveImage(this PdfPageBase page, string saveImagePath)
{
foreach (var item in page.ExtractImages())
{
if (!Directory.Exists(saveImagePath))
{
Directory.CreateDirectory(saveImagePath);
}
String imageFileName = Path.Combine(saveImagePath, Guid.NewGuid().ToString() + ".png");
item.Save(imageFileName, ImageFormat.Png);
}
}
/// <summary>
/// Spire插件读取PDF中的二维码,Zxing识别二维码
/// </summary>
/// <param name="file"></param>
/// <returns></returns>
public static string QrCodeToPdftwo(string file)
{
string str = "";
//加载PDF文档
PdfDocument doc = new PdfDocument();
doc.LoadFromFile(file);
List <Image> listImages = new List <Image>();
for (int i = 0; i < doc.Pages.Count; i++)
{
// 实例化一个Spire.Pdf.PdfPageBase对象
PdfPageBase page = doc.Pages[i];
// 获取所有pages里面的图片
Image[] images = page.ExtractImages();
if (images != null && images.Length > 0)
{
listImages.AddRange(images);
}
}
if (listImages.Count > 0)
{
//QRCodeDecoder decoder = new QRCodeDecoder();
//var image = listImages[0];
//str = decoder.decode(new ThoughtWorks.QRCode.Codec.Data.QRCodeBitmapImage((Bitmap)image));
var image = listImages[0];
ZXing.BarcodeReader reader = new ZXing.BarcodeReader();
reader.Options.CharacterSet = "UTF-8";
Bitmap map = new Bitmap(image);
Result result = reader.Decode(map);
return(result == null ? "" : result.Text);
}
return(str);
}
public static StandardFlowDocument DoExport(PDFDocument pdf_document)
{
StandardFlowDocument flow_document = new StandardFlowDocument();
flow_document.Background = Brushes.White;
using (AugmentedPdfLoadedDocument doc = new AugmentedPdfLoadedDocument(pdf_document.DocumentPath))
{
for (int page = 1; page <= pdf_document.PageCount; ++page)
{
string msg = $"Exporting page {page}/{pdf_document.PageCountAsString}";
StatusManager.Instance.UpdateStatus("ExportToWord", msg, page, Math.Max(1, pdf_document.PageCount));
try
{
Logging.Info(msg);
// Add the header for the page
{
Bold bold = new Bold();
bold.Inlines.Add(String.Format("--- Page {0} ---", page));
flow_document.Blocks.Add(new Paragraph(bold));
}
StringBuilder sb = new StringBuilder();
WordList words = pdf_document.GetOCRText(page);
if (null != words)
{
Word last_word = null;
foreach (Word word in words)
{
// Add a newline if we seem to have a linebreak
if (
(
(null != last_word && last_word.Left > word.Left) &&
(word.Top > last_word.Top + 2 * last_word.Height) &&
(word.Text.Length > 0 && !Char.IsLower(word.Text[0]))
)
||
(
(null != last_word && last_word.Left > word.Left) &&
(word.Top > last_word.Top + 2.5 * last_word.Height)
)
)
{
sb.Append("\n\n");
}
sb.Append(word.Text);
sb.Append(' ');
last_word = word;
}
}
else
{
sb.AppendLine(String.Format("OCR text is not yet ready for page {0}. Please try again in a few minutes.", page));
}
// Add the text from the page
{
Paragraph paragraph = new Paragraph();
paragraph.Inlines.Add(sb.ToString());
flow_document.Blocks.Add(paragraph);
}
// Add the images from the page
PdfPageBase pdf_page = doc.Pages[page - 1];
Image[] images = pdf_page.ExtractImages();
if (null != images)
{
foreach (Image image in images)
{
BitmapSource bitmap_source = BitmapImageTools.FromImage(image);
System.Windows.Controls.Image image_to_render = new System.Windows.Controls.Image();
image_to_render.Source = bitmap_source;
BlockUIContainer image_container = new BlockUIContainer(image_to_render);
Figure floater = new Figure(image_container);
floater.HorizontalAnchor = FigureHorizontalAnchor.PageLeft;
floater.WrapDirection = WrapDirection.None;
floater.Width = new FigureLength(image.Width);
{
Paragraph paragraph = new Paragraph();
paragraph.Inlines.Add(floater);
flow_document.Blocks.Add(paragraph);
}
}
}
// Add the annotations from the page
#if false
{
Logging.Debug("This PDF has {0} annotations", pdf_page.Annotations.Count);
Logging.Debug("The size of the page is {0}", pdf_page.Size);
foreach (var annotation in pdf_page.Annotations)
{
PdfLoadedUriAnnotation uri_annotation = annotation as PdfLoadedUriAnnotation;
if (null != uri_annotation)
{
Logging.Debug("There is a URL to '{0}' with text '{1}' with bounds '{2}'",
uri_annotation.Uri,
uri_annotation.Bounds,
uri_annotation.Text,
null);
}
}
}
#endif
}
catch (Exception ex)
{
Logging.Error(ex, "There was a problem exporting page {0}", page);
}
}
}
StatusManager.Instance.UpdateStatus("ExportToWord", "Finished exporting");
return(flow_document);
}
