Update Local Color Correction

Author: BBuf

Local Color Correction.cpp

@@ -0,0 +1,37 @@
+Mat LCC(const Mat &src){
+    int rows = src.rows;
+    int cols = src.cols;
+    int **I;
+    I = new int *[rows];
+    for(int i = 0; i < rows; i++){
+        I[i] = new int [cols];
+    }
+    int **inv_I;
+    inv_I = new int *[rows];
+    for(int i = 0; i < rows; i++){
+        inv_I[i] = new int [cols];
+    }
+    Mat Mast(rows, cols, CV_8UC1);
+    for(int i = 0; i < rows; i++){
+        uchar *data = Mast.ptr<uchar>(i);
+        for(int j = 0; j < cols; j++){
+            I[i][j] = (src.at<Vec3b>(i, j)[0] + src.at<Vec3b>(i, j)[1] + src.at<Vec3b>(i, j)[1]) / 3.0;
+            inv_I[i][j] = 255;
+            *data = inv_I[i][j] - I[i][j];
+            data++;
+        }
+    }
+    GaussianBlur(Mast, Mast, Size(41, 41), BORDER_DEFAULT);
+    Mat dst(rows, cols, CV_8UC3);
+    for(int i = 0; i < rows; i++){
+        uchar *data = Mast.ptr<uchar>(i);
+        for(int j = 0; j < cols; j++){
+            for(int k = 0; k < 3; k++){
+                float Exp = pow(2, (128 - data[j]) / 128.0);
+                int value = int(255 * pow(src.at<Vec3b>(i, j)[k] / 255.0, Exp));
+                dst.at<Vec3b>(i, j)[k] = value;
+            }
+        }
+    }
+    return dst;
+}

README.md

@@ -6,6 +6,6 @@
 - Adaptive Logarithmic Mapping For Displaying High Contrast Scenes.cpp 《Adaptive Logarithmic Mapping For Displaying High Contrast Scenes》c++朴素实现 ,详情请看：https://blog.csdn.net/just_sort/article/details/84066390
 
 - Single Image Haze Removal Using Dark Channel Prior.cpp 《Single Image Haze Removal Using Dark Channel Prior》论文阅读及复现，详情请看：https://blog.csdn.net/just_sort/article/details/84110518
-
+- Local Color Correction.cpp C++复现了《Local Color Correction》论文，详情请参考：https://blog.csdn.net/just_sort/article/details/84539295