diff --git a/src/main/java/com/yuxue/easypr/core/CharsSegment.java b/src/main/java/com/yuxue/easypr/core/CharsSegment.java
index 340e8f0..887b33f 100644
--- a/src/main/java/com/yuxue/easypr/core/CharsSegment.java
+++ b/src/main/java/com/yuxue/easypr/core/CharsSegment.java
@@ -98,7 +98,15 @@ public class CharsSegment {
         case GREEN:
             threshold(input_grey, img_threshold, 10, 255, CV_THRESH_OTSU + CV_THRESH_BINARY_INV);
             break;
-
+            
+        case WHITE:
+            threshold(input_grey, img_threshold, 10, 255, CV_THRESH_OTSU + CV_THRESH_BINARY);
+            break;
+        
+        case BLACK:
+            threshold(input_grey, img_threshold, 10, 255, CV_THRESH_OTSU + CV_THRESH_BINARY);
+            break;
+            
         default:
             return -3;
         }
@@ -141,7 +149,7 @@ public class CharsSegment {
             }
         }
         if (vecRect.size() == 0) {
-            return -3;
+            return -3;//没有检测到
         }
 
         Vector<Rect> sortedRect = new Vector<Rect>();
diff --git a/src/main/java/com/yuxue/easypr/core/CoreFunc.java b/src/main/java/com/yuxue/easypr/core/CoreFunc.java
index e0f8c22..6a5dcd1 100644
--- a/src/main/java/com/yuxue/easypr/core/CoreFunc.java
+++ b/src/main/java/com/yuxue/easypr/core/CoreFunc.java
@@ -159,7 +159,11 @@ public class CoreFunc {
             return PlateColor.YELLOW;
         } else if (plateColorJudge(src, PlateColor.GREEN, adaptive_minsv) == true) {
             return PlateColor.GREEN;
-        } else {
+        } else if(plateColorJudge(src, PlateColor.WHITE, adaptive_minsv) == true) {
+            return PlateColor.WHITE;
+        }else if(plateColorJudge(src, PlateColor.BLACK, adaptive_minsv) == true) {
+            return PlateColor.BLACK;
+        }else{
             return PlateColor.UNKNOWN;
         }
     }
diff --git a/src/main/java/com/yuxue/enumtype/PlateColor.java b/src/main/java/com/yuxue/enumtype/PlateColor.java
index c305c2c..0df00da 100644
--- a/src/main/java/com/yuxue/enumtype/PlateColor.java
+++ b/src/main/java/com/yuxue/enumtype/PlateColor.java
@@ -11,6 +11,8 @@ public enum PlateColor {
     BLUE("BLUE","蓝牌", 100, 130), 
     GREEN("GREEN","绿牌", 38, 100), 
     YELLOW("YELLOW","黄牌", 15, 40),
+    WHITE("WHITE","白牌",230,255),
+    BLACK("BLACK","黑牌",0,180),
     UNKNOWN("UNKNOWN","未知", 0, 0);
 
     public final String code;
diff --git a/target/classes/yx_image_recognition.db b/target/classes/yx_image_recognition.db
index 859428f..be11cfa 100644
Binary files a/target/classes/yx_image_recognition.db and b/target/classes/yx_image_recognition.db differ