From 8bf3f6bfcb867b73dbf87ddbc955f7bc94540baa Mon Sep 17 00:00:00 2001
From: Zhiwei Su <su_zhiwei@hotmail.com>
Date: Mon, 19 Jun 2017 20:30:28 +0800
Subject: [PATCH] Fixed gray window for gpu stereo BP and CSBP

compute() for BP and CSBP output 32-bit floating-point mat, and in cv::imshow() 32-bit floating-point is recognized as [0,1] and maped to [0,255], that causes gray window for BP and CSBP.
---
 samples/gpu/stereo_match.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/samples/gpu/stereo_match.cpp b/samples/gpu/stereo_match.cpp
index 012fda1085..c392cf1c88 100644
--- a/samples/gpu/stereo_match.cpp
+++ b/samples/gpu/stereo_match.cpp
@@ -212,7 +212,7 @@ void App::run()
         // Show results
         d_disp.download(disp);
         putText(disp, text(), Point(5, 25), FONT_HERSHEY_SIMPLEX, 1.0, Scalar::all(255));
-        imshow("disparity", disp);
+        imshow("disparity", (Mat_<uchar>)disp);
 
         handleKey((char)waitKey(3));
     }