Commit Test

app/src/main/java/com/stardust/scriptdroid/tool/ImagePHash.java

@@ -1,162 +0,0 @@
-package com.stardust.scriptdroid.tool;
-
-/**
- * Created by Stardust on 2017/4/23.
- */
-
-import android.graphics.Bitmap;
-
-import com.stardust.mi666.ocr.ColorDetector;
-import com.stardust.mi666.ocr.SimpleTextDetector;
-
-import java.util.HashMap;
-import java.util.Map;
-
-public class ImagePHash {
-
-    private static final String LOG_TAG = "ImagePHash";
-
-    private int width = 32;
-    private int height;
-    private int smallerWidth = 8;
-    private int smallerHeight;
-
-    public ImagePHash() {
-        this(32, 8);
-    }
-
-    public ImagePHash(int width, int smallerWidth) {
-        this(width, width, smallerWidth, smallerWidth);
-    }
-
-    public ImagePHash(int width, int height, int smallerWidth, int smallerHeight) {
-        this.width = width;
-        this.height = height;
-        this.smallerWidth = smallerWidth;
-        this.smallerHeight = smallerHeight;
-        initCoefficients();
-    }
-
-    public int distance(boolean[] s1, boolean[] s2) {
-        int counter = 0;
-        for (int k = 0; k < s1.length; k++) {
-            if (s1[k] != s2[k]) {
-                counter++;
-            }
-        }
-        return counter;
-    }
-
-
-    public boolean[] getHash(Bitmap img) {
-        double[][] vals = new double[width][height];
-        img = BitmapTool.scaleBitmap(img, width, height);
-
-        for (int x = 0; x < img.getWidth(); x++) {
-            for (int y = 0; y < img.getHeight(); y++) {
-                vals[x][y] = getBlue(img, x, y);
-            }
-        }
-
-        double[][] dctVals = applyDCT(vals);
-
-        double total = 0;
-
-        for (int x = 0; x < smallerWidth; x++) {
-            for (int y = 0; y < smallerHeight; y++) {
-                total += dctVals[x][y];
-            }
-        }
-        total -= dctVals[0][0];
-
-        double avg = total / (double) ((smallerWidth * smallerHeight) - 1);
-        boolean[] hash = new boolean[smallerWidth * smallerHeight];
-        int i = 0;
-        for (int x = 0; x < smallerWidth; x++) {
-            for (int y = 0; y < smallerHeight; y++) {
-                if (x != 0 && y != 0) {
-                    hash[i++] = dctVals[x][y] > avg;
-                }
-            }
-        }
-        return hash;
-    }
-
-
-    private static int getBlue(Bitmap img, int x, int y) {
-        return img.getPixel(x, y) & 0xff;
-    }
-
-    private double[] c;
-    private double[] c2;
-
-    private void initCoefficients() {
-        c = new double[width];
-        c2 = new double[height];
-        for (int i = 1; i < width; i++) {
-            c[i] = 1;
-        }
-        for (int i = 1; i < height; i++) {
-            c2[i] = 1;
-        }
-        c[0] = 1 / Math.sqrt(2.0);
-        c2[0] = 1 / Math.sqrt(2.0);
-    }
-
-    private double[][] applyDCT(double[][] f) {
-        double[][] F = new double[width][height];
-        for (int u = 0; u < width; u++) {
-            for (int v = 0; v < height; v++) {
-                double sum = 0.0;
-                for (int i = 0; i < width; i++) {
-                    for (int j = 0; j < height; j++) {
-                        sum += Math.cos(((2 * i + 1) / (2.0 * width)) * u * Math.PI) * Math.cos(((2 * j + 1) / (2.0 * height)) * v * Math.PI) * (f[i][j]);
-                    }
-                }
-                sum *= ((c[u] * c2[v]) / 4.0);
-                F[u][v] = sum;
-            }
-        }
-        return F;
-    }
-
-    public static class OCR implements com.stardust.mi666.ocr.OCR {
-
-        private SimpleTextDetector mSimpleTextDetector;
-        private Map<Character, boolean[]> mChars = new HashMap<>();
-        private ImagePHash mImagePHash;
-
-        public OCR(ColorDetector colorDetector, int size, int smallerSize) {
-            mSimpleTextDetector = new SimpleTextDetector(colorDetector);
-            mImagePHash = new ImagePHash(size, smallerSize);
-        }
-
-        public OCR(ColorDetector colorDetector, ImagePHash pHash) {
-            mSimpleTextDetector = new SimpleTextDetector(colorDetector);
-            mImagePHash = pHash;
-        }
-
-        @Override
-        public void addChar(char ch, Bitmap bitmap) {
-            mChars.put(ch, mImagePHash.getHash(mSimpleTextDetector.detect(bitmap)));
-        }
-
-        @Override
-        public char detect(Bitmap bitmap) {
-            bitmap = mSimpleTextDetector.detect(bitmap);
-            int min = Integer.MAX_VALUE;
-            boolean[] h = mImagePHash.getHash(bitmap);
-            char ch = ' ';
-            for (Map.Entry<Character, boolean[]> entry : mChars.entrySet()) {
-                int d = mImagePHash.distance(h, entry.getValue());
-                //Log.i(LOG_TAG, "char: " + entry.getKey() + " distance: " + d);
-                if (d < min) {
-                    min = d;
-                    ch = entry.getKey();
-                }
-            }
-            return ch;
-        }
-    }
-
-}