diff --git a/src/mat_io_test.cpp b/src/mat_io_test.cpp
index 7bb57b2..c06760c 100644
--- a/src/mat_io_test.cpp
+++ b/src/mat_io_test.cpp
@@ -30,7 +30,7 @@ main( )
 
     //    Mat img1 = imread( "/home/gao/ws/devel/lib/camera_model/image_down/IMG_35.png",
     //    CV_LOAD_IMAGE_GRAYSCALE );
-    Mat img1 = imread( "/home/gao/IMG_1.png", CV_LOAD_IMAGE_UNCHANGED );
+    Mat img1 = imread( "/home/gao/IMG_1.png", cv::IMREAD_UNCHANGED );
 
     cv::resize( img1, img, cv::Size( 640, 512 ) );
 
diff --git a/src/sumpixel_test.cpp b/src/sumpixel_test.cpp
index 48488e3..f476226 100644
--- a/src/sumpixel_test.cpp
+++ b/src/sumpixel_test.cpp
@@ -1,5 +1,5 @@
 #define BACKWARD_HAS_DW 1
-#include "backward.hpp"
+#include "code_utils/backward.hpp"
 namespace backward
 {
 backward::SignalHandling sh;
@@ -81,7 +81,7 @@ void
 test1( )
 {
     Mat img;
-    Mat img1 = imread( "/home/gao/IMG_1.png", CV_LOAD_IMAGE_GRAYSCALE );
+    Mat img1 = imread( "/home/gao/IMG_1.png", cv::IMREAD_GRAYSCALE );
 
     sys_utils::tic::TicTocPart time;
 
@@ -91,7 +91,7 @@ test1( )
     std::cout << "sumPixelRow cost " << time.toc( ) << " ms\n";
 
     cv::Mat img2;
-    normalize( img, img2, 0, 255, CV_MINMAX );
+    normalize( img, img2, 0, 255, cv::NORM_MINMAX );
     Mat imageIntegralNorm;
     convertScaleAbs( img2, imageIntegralNorm );
 
@@ -104,7 +104,7 @@ void
 test2( )
 {
     Mat img;
-    Mat img1 = imread( "/home/gao/IMG_1.png", CV_LOAD_IMAGE_GRAYSCALE );
+    Mat img1 = imread( "/home/gao/IMG_1.png", cv::IMREAD_GRAYSCALE );
 
     sys_utils::tic::TicTocPart time;
 
@@ -114,7 +114,7 @@ test2( )
     std::cout << "sumPixelRow cost " << time.toc( ) << " ms\n";
 
     cv::Mat img2;
-    normalize( img, img2, 0, 255, CV_MINMAX );
+    normalize( img, img2, 0, 255, cv::NORM_MINMAX );
     Mat imageIntegralNorm;
     convertScaleAbs( img2, imageIntegralNorm );