Error integration fingerprint U.are.U SDK with java web application

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I developed a web application using Java and play framework in the BackEnd, and AngularJS in the FrontEnd.

I did an integration with the U.are.U SDK for fingerprint scan

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时光说笑

2021-02-11 07:34

I use this method to get a successful result, being m_fmdAuxiliar a variable which store the data from DB, I just save data then I retrieve.

m_fmd = m_engine.CreateFmd(cap_result.image, Fmd.Format.ANSI_378_2004);
data = m_fmd.getData();

Fmd m_fmdAuxiliar = UareUGlobal.GetImporter().ImportFmd(data, Fmd.Format.ANSI_378_2004, Fmd.Format.ANSI_378_2004);

Fmd m_fmd2 = m_engine.CreateFmd(cap_result.image, Fmd.Format.ANSI_378_2004);
m_score = m_engine.Compare(m_fmdAuxiliar, 0, m_fmd2, 0);

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既然无缘

2021-02-11 07:37

Convert your PNG image to raw bytearray in grayscale:

     // read an image from the disk
     BufferedImage image = ImageIO.read(new File("kittens.jpg"));

     setPreferredSize(new Dimension(
         image.getWidth(),image.getHeight()));

     // create a grayscale image the same size
     gray = new BufferedImage(image.getWidth(),image.getHeight(),
         BufferedImage.TYPE_BYTE_GRAY);

     // convert the original colored image to grayscale
     ColorConvertOp op = new ColorConvertOp(
         image.getColorModel().getColorSpace(),
         gray.getColorModel().getColorSpace(),null);
     op.filter(image,gray);

     //convert BuffuredImage to raw byte array
     WritableRaster raster = gray.getRaster();
     DataBufferByte data = (DataBufferByte) raster.getDataBuffer();    
     byte[] rawPixels = data.getData();

convert your bytearray to FID

     Fid fid = UareUGlobal.getImporter().ImportRaw(rawPixels, 
         width, height, inDpi, fingerPosition, cbeffId, 
         Fid.Format.ANSI_381_2004, outDpi, rotate180);

convert your FID to FMD

     Fmd fmd = UareUGlobal.GetEngine().CreateFmd(fid, 
         Fid.Format.ANSI_381_2004);

Now you could compare this Fmd with current capture

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