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, introwY2) {
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());
}
