From: Nikolay Polyarniy <polarnick@agisoft.com>
Date: Wed, 2 Jun 2021 12:53:32 +0000 (+0300)
Subject: EXR reading: support Z channel if no Y channel
X-Git-Tag: submit/tizen/20220120.021815~1^2~1^2~25^2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=746bd47ce55a153e34eeb80603e303b4581e14ca;p=platform%2Fupstream%2Fopencv.git

EXR reading: support Z channel if no Y channel
---

diff --git a/modules/imgcodecs/src/grfmt_exr.cpp b/modules/imgcodecs/src/grfmt_exr.cpp
index 9667b8ca03..8cf4db99c5 100644
--- a/modules/imgcodecs/src/grfmt_exr.cpp
+++ b/modules/imgcodecs/src/grfmt_exr.cpp
@@ -156,6 +156,10 @@ bool  ExrDecoder::readHeader()
     else
     {
         m_green = channels.findChannel( "Y" );
+        if( !m_green )
+        {
+            m_green = channels.findChannel( "Z" ); // Distance of the front of a sample from the viewer
+        }
         if( m_green )
         {
             m_ischroma = true;