tracker/neuralnet: fix copying grayscale frameopentrack-2021.1.1

It crashes later though.

1 files changed, 2 insertions, 1 deletions

diff --git a/tracker-neuralnet/ftnoir_tracker_neuralnet.cpp b/tracker-neuralnet/ftnoir_tracker_neuralnet.cpp
index 4a780fc1..8fd65bc9 100644
--- a/tracker-neuralnet/ftnoir_tracker_neuralnet.cpp
+++ b/tracker-neuralnet/ftnoir_tracker_neuralnet.cpp
@@ -700,7 +700,8 @@ void neuralnet_tracker::run()
             switch (img.channels)
             {
             case 1:
-                grayscale.setTo(color); 
+                grayscale.create(img.height, img.width, CV_8UC1);
+                color.copyTo(grayscale);
                 break;
             case 3:
                 cv::cvtColor(color, grayscale, cv::COLOR_BGR2GRAY);