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src/main/java/com/yuxue/util/ImageUtil.java

@@ -25,7 +25,7 @@ import com.google.common.collect.Maps;
 
 /**
  * 车牌图片处理工具类
- * 开发测试中...
+ * 将原图，经过算法处理，得到车牌的图块
  * @author yuxue
  * @date 2020-05-18 12:07
  */
@@ -368,26 +368,26 @@ public class ImageUtil {
     /**
      * 对minAreaRect获得的最小外接矩形
      * 判断面积以及宽高比是否在制定的范围内
-     * 黄牌、蓝牌
+     * 黄牌、蓝牌、绿牌
+     * 国内车牌大小: 440mm*140mm，宽高比 3.142857
      * @param mr
      * @return
      */
-    final static float DEFAULT_ERROR = 0.6f;
-    final static float DEFAULT_ASPECT = 3.75f;
-    public static final int DEFAULT_VERIFY_MIN = 3;
-    public static final int DEFAULT_VERIFY_MAX = 20;
+    final static float DEFAULT_ERROR = 0.7f;    // 宽高比允许70%误差
+    final static float DEFAULT_ASPECT = 3.142857f;
+    public static final int DEFAULT_VERIFY_MIN = 1;
+    public static final int DEFAULT_VERIFY_MAX = 30;
     /*final static float DEFAULT_ERROR = 0.9f;
     final static float DEFAULT_ASPECT = 4f;
     public static final int DEFAULT_VERIFY_MIN = 1;
     public static final int DEFAULT_VERIFY_MAX = 30;*/
     private static boolean checkPlateSize(RotatedRect mr) {
-
-        // 国内车牌大小: 440mm*140mm，宽高比 3.142857
+        
         // 切图面积取值范围
         int min = 44 * 14 * DEFAULT_VERIFY_MIN;
         int max = 44 * 14 * DEFAULT_VERIFY_MAX;
 
-        // 切图横纵比取值范围
+        // 切图横纵比取值范围；关键在于纵横比例
         float rmin = DEFAULT_ASPECT - DEFAULT_ASPECT * DEFAULT_ERROR;
         float rmax = DEFAULT_ASPECT + DEFAULT_ASPECT * DEFAULT_ERROR;
 

src/main/java/com/yuxue/util/PalteUtil.java

@@ -1,12 +1,58 @@
 package com.yuxue.util;
 
+import java.util.Vector;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
+import org.opencv.core.Core;
+import org.opencv.core.CvType;
+import org.opencv.core.Mat;
+import org.opencv.imgproc.Imgproc;
+import org.opencv.ml.ANN_MLP;
+import org.opencv.ml.SVM;
+
 import com.yuxue.constant.Constant;
+import com.yuxue.enumtype.PlateColor;
+
 
+/**
+ * 车牌处理工具类
+ * 车牌切图按字符分割
+ * 字符识别
+ * @author yuxue
+ * @date 2020-05-28 15:11
+ */
 public class PalteUtil {
+    
+    static {
+        System.loadLibrary(Core.NATIVE_LIBRARY_NAME);
+    }
+    
+    private static SVM svm = SVM.create();
+
+    private static ANN_MLP ann=ANN_MLP.create();
 
+    public static void loadSvmModel(String path) {
+        svm.clear();
+        svm=SVM.load(path);
+    }
+
+    // 加载ann配置文件  图像转文字的训练库文件
+    public static void loadAnnModel(String path) {
+        ann.clear();
+        ann = ANN_MLP.load(path);
+    }
+    
+
+    public static void main(String[] args) {
+        /*System.err.println(PalteUtil.isPlate("粤AI234K"));
+        System.err.println(PalteUtil.isPlate("鄂CD3098"));*/
+        
+        
+        System.err.println("done!!!");
+    }
+    
+    
     /**
      * 根据正则表达式判断字符串是否是车牌
      * @param str
@@ -26,11 +72,46 @@ public class PalteUtil {
     }
     
     
-    public static void main(String[] args) {
-        System.err.println(PalteUtil.isPlate("粤AI234K"));
-        System.err.println(PalteUtil.isPlate("鄂CD3098"));
+    /**
+     * 输入车牌切图集合，判断是否包含车牌
+     * @param inMat
+     * @param dst 包含车牌的图块
+     */
+    public static final int DEFAULT_WIDTH = 136;
+    public static final int DEFAULT_HEIGHT = 36;
+    public static void hasPlate(Vector<Mat> inMat, Vector<Mat> dst, String modelPath) {
+        loadSvmModel(modelPath);
+        
+        inMat.stream().forEach(src -> {
+            if(src.rows() == DEFAULT_HEIGHT && src.cols() == DEFAULT_WIDTH) {
+                Imgproc.cvtColor(src, src, Imgproc.COLOR_BGR2GRAY);
+                Imgproc.Canny(src, src, 130, 250);
+                Mat samples = src.reshape(1, 1);
+                samples.convertTo(samples, CvType.CV_32F);
+                
+                float flag = svm.predict(samples);
+                
+                if (flag == 0) {
+                 // System.out.println("目标符合");
+                    dst.add(src);
+                } else {
+                    // System.out.println("目标不符合");
+                }
+            }
+        });
+        
+        return;
+    }
+   
+    /**
+     * 判断切图车牌颜色
+     * @param inMat
+     * @return
+     */
+    public static PlateColor getPlateColor(Mat inMat) {
+        
+        
+        return PlateColor.UNKNOWN;
     }
-    
-    
     
 }