From: Antonio Ospite Date: Thu, 22 Feb 2018 12:12:04 +0000 (+0100) Subject: opencv_trail_effect.cpp: fix showing the background X-Git-Url: https://git.ao2.it/experiments/opencv_trail_effect.git/commitdiff_plain/5ac5412e847a0abaeaf83c3a0299e68ffaec10f1?ds=inline;hp=5ac5412e847a0abaeaf83c3a0299e68ffaec10f1 opencv_trail_effect.cpp: fix showing the background When showing the background OpenCV would fail with this message: OpenCV Error: Assertion failed (channels() == CV_MAT_CN(dtype)) in copyTo, file /build/opencv-lY8WRY/opencv-3.2.0+dfsg/modules/core/src/copy.cpp, line 259 terminate called after throwing an instance of 'cv::Exception' what(): /build/opencv-lY8WRY/opencv-3.2.0+dfsg/modules/core/src/copy.cpp:259: error: (-215) channels() == CV_MAT_CN(dtype) in function copyTo Initializing the background to the same format of the input frame seems to fix this. ---