diff --git a/image/native_test/京P8BK60.jpg b/image/native_test/京P8BK60.jpg
new file mode 100644
index 0000000..0c77b08
Binary files /dev/null and b/image/native_test/京P8BK60.jpg differ
diff --git a/image/native_test/çš–A00T45.jpg b/image/native_test/çš–A00T45.jpg
deleted file mode 100644
index d9037c8..0000000
Binary files a/image/native_test/çš–A00T45.jpg and /dev/null differ
diff --git a/run_accuracy.txt b/run_accuracy.txt
index 08fc1f0..3443d6c 100644
--- a/run_accuracy.txt
+++ b/run_accuracy.txt
@@ -709,3 +709,27 @@
 ×ÜͼƬÊý:120ÕÅ,  δʶ³öͼƬ:7ÕÅ,  ¶¨Î»ÂÊ:94.1667%  
 ƽ¾ù×Ö·û²î¾à:2.0177¸ö,  ÍêÈ«Æ¥ÅäÊý:26ÕÅ,  ÍêÈ«Æ¥ÅäÂÊ:23.0089%  
 ×Üʱ¼ä:87Ãë,  ƽ¾ùÖ´ÐÐʱ¼ä:0.725Ãë  
+2015-03-14 18:01:13
+×ÜͼƬÊý:2ÕÅ,  δʶ³öͼƬ:1ÕÅ,  ¶¨Î»ÂÊ:50%  
+ƽ¾ù×Ö·û²î¾à:5¸ö,  ÍêÈ«Æ¥ÅäÊý:0ÕÅ,  ÍêÈ«Æ¥ÅäÂÊ:0%  
+×Üʱ¼ä:8Ãë,  ƽ¾ùÖ´ÐÐʱ¼ä:4Ãë  
+2015-03-14 18:01:55
+×ÜͼƬÊý:2ÕÅ,  δʶ³öͼƬ:1ÕÅ,  ¶¨Î»ÂÊ:50%  
+ƽ¾ù×Ö·û²î¾à:5¸ö,  ÍêÈ«Æ¥ÅäÊý:0ÕÅ,  ÍêÈ«Æ¥ÅäÂÊ:0%  
+×Üʱ¼ä:15Ãë,  ƽ¾ùÖ´ÐÐʱ¼ä:7.5Ãë  
+2015-03-14 18:14:46
+×ÜͼƬÊý:1ÕÅ,  δʶ³öͼƬ:1ÕÅ,  ¶¨Î»ÂÊ:0%  
+ƽ¾ù×Ö·û²î¾à:-1.#IND¸ö,  ÍêÈ«Æ¥ÅäÊý:0ÕÅ,  ÍêÈ«Æ¥ÅäÂÊ:-1.#IND%  
+×Üʱ¼ä:1Ãë,  ƽ¾ùÖ´ÐÐʱ¼ä:1Ãë  
+2015-03-14 18:16:41
+×ÜͼƬÊý:120ÕÅ,  δʶ³öͼƬ:7ÕÅ,  ¶¨Î»ÂÊ:94.1667%  
+ƽ¾ù×Ö·û²î¾à:2.0177¸ö,  ÍêÈ«Æ¥ÅäÊý:26ÕÅ,  ÍêÈ«Æ¥ÅäÂÊ:23.0089%  
+×Üʱ¼ä:96Ãë,  ƽ¾ùÖ´ÐÐʱ¼ä:0.8Ãë  
+2015-03-14 18:21:03
+×ÜͼƬÊý:120ÕÅ,  δʶ³öͼƬ:13ÕÅ,  ¶¨Î»ÂÊ:89.1667%  
+ƽ¾ù×Ö·û²î¾à:2.26168¸ö,  ÍêÈ«Æ¥ÅäÊý:24ÕÅ,  ÍêÈ«Æ¥ÅäÂÊ:22.4299%  
+×Üʱ¼ä:126Ãë,  ƽ¾ùÖ´ÐÐʱ¼ä:1.05Ãë  
+2015-03-14 18:23:34
+×ÜͼƬÊý:120ÕÅ,  δʶ³öͼƬ:7ÕÅ,  ¶¨Î»ÂÊ:94.1667%  
+ƽ¾ù×Ö·û²î¾à:2.0177¸ö,  ÍêÈ«Æ¥ÅäÊý:26ÕÅ,  ÍêÈ«Æ¥ÅäÂÊ:23.0089%  
+×Üʱ¼ä:93Ãë,  ƽ¾ùÖ´ÐÐʱ¼ä:0.775Ãë  
diff --git a/src/core/plate_locate.cpp b/src/core/plate_locate.cpp
index 1d9fbf1..77f66a0 100644
--- a/src/core/plate_locate.cpp
+++ b/src/core/plate_locate.cpp
@@ -348,13 +348,17 @@ int CPlateLocate::sobelOper(const Mat& in, Mat& out, int blurSize, int morphW, i
 	GaussianBlur(in, mat_blur, Size(blurSize, blurSize), 0, 0, BORDER_DEFAULT);
 
 	Mat mat_gray;
-	if (mat_blur.channels() == 3)
+	if (mat_blur.channels() == 3) {
 		cvtColor(mat_blur, mat_gray, CV_RGB2GRAY);
+	}
 	else
 		mat_gray = mat_blur;
 
 	//equalizeHist(mat_gray, mat_gray);
 
+	
+
+
 	int scale = SOBEL_SCALE;
 	int delta = SOBEL_DELTA;
 	int ddepth = SOBEL_DDEPTH;