Android调用OCR识别图像中的文字，android调用ocr图像, // Charact

Android调用OCR识别图像中的文字，android调用ocr图像, // Charact

  // CharacterExtractor.java    // Copyright (c) 2010 William Whitney    // All rights reserved.    // This software is released under the BSD license.    // Please see the accompanying LICENSE.txt for details.    package srtp.ys.ocrtest;    import java.util.logging.Level;    import java.util.logging.Logger;    import android.graphics.Bitmap;    import android.graphics.BitmapFactory;    import android.graphics.Canvas;    import android.graphics.Color;    import android.graphics.ColorMatrix;    import android.graphics.ColorMatrixColorFilter;    import android.graphics.Paint;    import android.graphics.Matrix;    import android.graphics.Bitmap.Config;    import android.graphics.drawable.BitmapDrawable;    import android.util.Log;    import android.widget.ImageView;    import android.app.*;    import android.app.Activity;    import android.os.Bundle;    import android.view.View;    /**    * Saves all the characters in an image to an output directory individually.    * @author William Whitney    */    public class CharacterExtractor extends DocumentScannerListenerAdaptor    {        private DocumentScanner documentScanner = new DocumentScanner();        private int std_width;        private int std_height;    ////////////////////////////////////////////////////////////////////        public void slice(  int std_width, int std_height)        {            try            {                this.std_width = std_width;                this.std_height = std_height;                Bitmap img = BitmapFactory.decodeFile("/sdcard/test.bmp");                PixelImage pixelImage = new PixelImage(img);                pixelImage.toGrayScale(true); //OK                pixelImage.filter(); // OK                documentScanner.scan(pixelImage, this, 0, 0, pixelImage.width, pixelImage.height);            }            catch (Exception ex)            {                Logger.getLogger(CharacterExtractor.class.getName()).log(Level.SEVERE, null, ex);            }        }    ////////////////////////////////////////////////////////////////////        public static Bitmap zoomBitmap(Bitmap bitmap, int w, int h) {            int width = bitmap.getWidth();            int height = bitmap.getHeight();            Matrix matrix = new Matrix();            float scaleWidth ;            float scaleHeight;            //float scaleWidth = ((float) w / width);          if(height>width)  {             scaleWidth = ((float) h / height);             scaleHeight = ((float) h / height);            }          else          {                    scaleWidth = ((float) w / width);                scaleHeight = ((float) w / width);          }            matrix.postScale(scaleWidth, scaleHeight);            Bitmap newBmp = Bitmap.createBitmap(bitmap, 0, 0, width, height,                    matrix, true);            //加上30*30白色背景            Bitmap mbmpTest = Bitmap.createBitmap(30,30, Config.RGB_565);            Canvas canvasTemp = new Canvas(mbmpTest);//给Canvas指定一个bitmap，之后就不是画到屏幕而是画到这个bitmap上            canvasTemp.drawColor(Color.WHITE);            Paint mPaint = new Paint();            mPaint.setColor(Color.WHITE);            canvasTemp.drawBitmap(newBmp,(((float)(30-newBmp.getWidth()))/2),(((float)(30-newBmp.getHeight()))/2),mPaint);//画到正中间           return mbmpTest;        }        public static Bitmap rgbtoGrayscale(Bitmap bmpOriginal) {                        int width, height;                        height = bmpOriginal.getHeight();                        width = bmpOriginal.getWidth();                       Bitmap bmpGrayscale = Bitmap.createBitmap(width, height, Bitmap.Config.RGB_565);                       Canvas c = new Canvas(bmpGrayscale);                       Paint paint = new Paint();                        ColorMatrix cm = new ColorMatrix();                        cm.setSaturation(0);                       ColorMatrixColorFilter f = new ColorMatrixColorFilter(cm);                      paint.setColorFilter(f);                        c.drawBitmap(bmpOriginal, 0, 0, paint);                        return bmpGrayscale;                    }        public void processChar(int x1, int y1, int x2, int y2, int rowY1, int rowY2)        {            try            {                int areaW = x2 - x1;                int areaH = y2 - y1;                //Extract the character                Bitmap fatherimage =  BitmapFactory.decodeFile("/sdcard/test.bmp");               // Drawable characterImage=new BitmapDrawable(BitmapFactory.decodeFile("/sdcard/test.jpg"));                Bitmap bitmapcharacterImage = Bitmap.createBitmap(fatherimage,x1, y1, areaW, areaH);                Log.v("w","w:"+bitmapcharacterImage.getWidth()+"H:"+bitmapcharacterImage.getHeight());               Bitmap characterImage=zoomBitmap(bitmapcharacterImage,std_width,std_height);//缩放并添上背景               // 显示位图               BitmapDrawable bmpDraw=new BitmapDrawable(rgbtoGrayscale(characterImage));              mainactivity.iv2.setImageDrawable(bmpDraw);               // int[] testImgPixels = ImageUtils.getPixels(rgbtoGrayscale(characterImage), characterImage.getWidth( ),        characterImage.getHeight( ));               // int[][] binerymerticx=ImageUtils.getSymbolMatrix(testImgPixels, 2);              int[] binerymerticxforcompare = ImageUtils.getbinarymatrix(rgbtoGrayscale(characterImage));               int countblackpoint=0;               for(int ii=0;ii<30;ii++)                       for(int jj=0;jj<30;jj++)                               if(binerymerticxforcompare[ii*30+jj]==1)                                       countblackpoint++;              if(countblackpoint<10)              {                      System.out.println();              }                      else              {                //此处进行比较并输出结果：                int i;                int j;                int maxequal=0;                int maxindex=0;                int count=0;                for(i=0;i<26;i++)                {                         count=0;                        for(j=0;j<900;j++)                        {                                if(model.CharacterModel1[j]==binerymerticxforcompare[j])                            count++;                        }                //          System.out.print(count);                //          System.out.print(" ");                        if(count>maxequal)                        {                                maxequal=count;                                maxindex=i;                        }                }                int i2;                int j2;                int maxequal2=0;                int maxindex2=0;                int count2=0;                for(i2=0;i2<26;i2++)                {                         count2=0;                        for(j2=0;j2<900;j2++)                        {                                if(model2.CharacterModel2[i2][j2]==binerymerticxforcompare[j2])                            count2++;                        }                //          System.out.print(count);                //          System.out.print(" ");                        if(count2>maxequal2)                        {                                maxequal2=count2;                                maxindex2=i2;                        }                }                        char result;                        if(maxequal>maxequal2)                        result=(char)('A'+maxindex);                      else                              result=(char)('a'+maxindex2);                            mainactivity.res+=result;                            //  System.out.print(result);                            //   System.out.println();             }            }            catch (Exception ex)            {                Logger.getLogger(CharacterExtractor.class.getName()).log(Level.SEVERE, null, ex);            }        }        private static final Logger LOG = Logger.getLogger(CharacterExtractor.class.getName());    }