objdetect(QR): avoid bug with empty input

5 years ago · d7e839b8c5
parent 0fb4f2cc9c
commit d7e839b8c5
1 changed files with 9 additions and 2 deletions
--- a/modules/objdetect/src/qrcode.cpp
+++ b/modules/objdetect/src/qrcode.cpp
@ -122,9 +122,16 @@ void QRDetect::init(const Mat& src, double eps_vertical_, double eps_horizontal_

    eps_vertical   = eps_vertical_;
    eps_horizontal = eps_horizontal_;
-    adaptiveThreshold(barcode, bin_barcode, 255, ADAPTIVE_THRESH_GAUSSIAN_C, THRESH_BINARY, 83, 2);
-    adaptiveThreshold(resized_barcode, resized_bin_barcode, 255, ADAPTIVE_THRESH_GAUSSIAN_C, THRESH_BINARY, 83, 2);

+    if (!barcode.empty())
+        adaptiveThreshold(barcode, bin_barcode, 255, ADAPTIVE_THRESH_GAUSSIAN_C, THRESH_BINARY, 83, 2);
+    else
+        bin_barcode.release();
+
+    if (!resized_barcode.empty())
+        adaptiveThreshold(resized_barcode, resized_bin_barcode, 255, ADAPTIVE_THRESH_GAUSSIAN_C, THRESH_BINARY, 83, 2);
+    else
+        resized_bin_barcode.release();
 }

 vector<Vec3d> QRDetect::searchHorizontalLines()