diff --git a/modules/objdetect/src/qrcode.cpp b/modules/objdetect/src/qrcode.cpp index cabc742b31..dd3c48eb17 100644 --- a/modules/objdetect/src/qrcode.cpp +++ b/modules/objdetect/src/qrcode.cpp @@ -782,6 +782,9 @@ bool QRCodeDetector::detect(InputArray in, OutputArray points) const Mat inarr = in.getMat(); CV_Assert(!inarr.empty()); CV_Assert(inarr.depth() == CV_8U); + if (inarr.cols <= 20 || inarr.rows <= 20) + return false; // image data is not enough for providing reliable results + int incn = inarr.channels(); if( incn == 3 || incn == 4 ) { @@ -1070,6 +1073,8 @@ cv::String QRCodeDetector::decode(InputArray in, InputArray points, Mat inarr = in.getMat(); CV_Assert(!inarr.empty()); CV_Assert(inarr.depth() == CV_8U); + if (inarr.cols <= 20 || inarr.rows <= 20) + return cv::String(); // image data is not enough for providing reliable results int incn = inarr.channels(); if( incn == 3 || incn == 4 ) @@ -1108,6 +1113,8 @@ cv::String QRCodeDetector::detectAndDecode(InputArray in, Mat inarr = in.getMat(); CV_Assert(!inarr.empty()); CV_Assert(inarr.depth() == CV_8U); + if (inarr.cols <= 20 || inarr.rows <= 20) + return cv::String(); // image data is not enough for providing reliable results int incn = inarr.channels(); if( incn == 3 || incn == 4 )