半岛权威十大直营(官方)网站

　　LEADTOOLS最近发布了v18版本，这个版本也被称为LEADTOOLS Anywhere™，他将世界最领先的成像技术扩展到iOS，Android和Linux OS X等平台。不仅仅是Windows平台，他让所有流行的平台都能够实现查看者，注释和标记，OCR，条码，PDF，图像格式，压缩，图像处理等更多图像OCR功能。

　　每个使用LEADTOOLS的开发者能够在每个开发平台上使用一组非常相似的库进行程序开发。这是其的一个明显优势，让开发者即能够开发原生的应用程序，又不用花费太多的时间进行完全的代码重写。

新版本功能亮点：

• 多平台原生图像查看器：.NET、HTML5、WinRT、iOS、OS X和Android
• 支持加载、转换和保存超过150种图像格式
• 先进的位深度，色彩空间和压缩支持，包括PDF/ A，PDF，JPEG，JPEG 2000，TIFF，JBIG2等
• OCR将图像转换为可搜索的文本，PDF，DOC
• 条形码读写支持，包括：QR码，PDF417，二维码，UPC/EAN等
• 支持注释和标记，包括几何形状，便签，重做，高亮和橡皮擦

　　接下来，我们将展示LEADTOOLS对于各个平台不同的OCR代码示例。

.NET

System.Drawing.Bitmap bitmap = ... // 
// Get a LEADTOOLS RasterImage from the platform image
RasterImage rasterImage = RasterImageConverter.FromImage(bitmap);
// Create a LEADTOOLS OCR Document instance
IOcrEngine ocrEngine = OcrEngineManager.CreateEngine(OcrEngineAdvantage, false);
ocrEngine.Startup(null, null, null, Application.CommonAppDataPath);
IOcrDocument ocrDocument = ocrEngine.DocumentManager.CreateDocument();
// Add the page to the document and recognize it
IOcrPage ocrPage = ocrDocument.Pages.AddPage(rasterImage, null);
// Recognize the image as text
string text = ocrPage.RecognizeText(null);
// Do something with 'text'

WinRT

Windows.UI.Xaml.Media.ImageSource imageSource = ... //
// Get a LEADTOOLS RasterImage from the platform image
RasterImage rasterImage = RasterImageConverter.ConvertFromImageSource(imageSource, ConvertFromImageOptions.None);
// Create a LEADTOOLS OCR Document instance
IOcrEngine ocrEngine = OcrEngineManager.CreateEngine(OcrEngineType.Advantage, false);
ocrEngine.Startup(null, null, string.Empty, Package.Current.InstalledLocation.Path);
IOcrDocument ocrDocument = ocrEngine.DocumentManager.CreateDocument();
// Add the page to the document and recognize it
IOcrPage ocrPage = ocrDocument.Pages.AddPage(rasterImage, null);
// Recognize the image as text
string text = ocrPage.RecognizeText(null);
// Do something with 'text'

iOS & OS X

UIImage* uiImage = ... //
// Get a LEADTOOLS RasterImage from the platform image
LTRasterImage* rasterImage = [LTRasterImageConverter convertFromImage:uiImage
     options:LTConvertFromImageOptions_None
       error:nil];
// Create a LEADTOOLS OCR Document instance
[ocrEngine startup:nil workDirectory:nil startupParameters:[[NSBundle mainBundle] bundlePath];
LTOcrDocument* ocrDocument = [ocrEngine.documentManager createDocument];
// Add the page to the document and recognize it
LTOcrPage* ocrPage = [ocrDocument.pages addPageWithImage:rasterImage
   target:nil
   selector:nil
   error:nil];
// Recognize the image as text
NSString* text = [ocrPage recognizeText:nil selector:nil error:nil];
// Do something with 'text'

Android

android.graphics.Bitmap bitmap = ... //
// Get a LEADTOOLS RasterImage from the platform image
RasterImage rasterImage = RasterImageConverter.convertFromBitmap(bitmap, ConvertFromImageOptions.NONE);
// Create a LEADTOOLS OCR Document instance
OcrEngine ocrEngine = OcrEngineManager.createEngine(OcrEngineType.Advantage);
ocrEngine.startup(null, "", null, this.getApplicationInfo().dataDir);
OcrDocument document = ocrEngine.getDocumentManager().createDocument();
// Add the page to the document and recognize it
OcrPage ocrPage = document.getPages().addPage(image, null);
// Recognize the image as text
String text = ocrPage.recognizeText(this);
// Do something with 'text'