Merge pull request #11989 from csukuangfj:patch_2

7 years ago · 540415dc5e
parent f058b5fb1e 84f2f37680
commit 540415dc5e
1 changed files with 1 additions and 4 deletions
--- a/modules/calib3d/src/calibinit.cpp
+++ b/modules/calib3d/src/calibinit.cpp
@ -513,10 +513,6 @@ bool findChessboardCorners(InputArray image_, Size pattern_size,
    {
        cvtColor(img, img, COLOR_BGR2GRAY);
    }
-    else
-    {
-        img.clone();
-    }

    int prev_sqr_size = 0;

@ -578,6 +574,7 @@ bool findChessboardCorners(InputArray image_, Size pattern_size,
    {
        if (flags & CALIB_CB_NORMALIZE_IMAGE)
        {
+            img = img.clone();
            equalizeHist(img, img);
        }