From 746bd47ce55a153e34eeb80603e303b4581e14ca Mon Sep 17 00:00:00 2001
From: Nikolay Polyarniy <polarnick@agisoft.com>
Date: Wed, 2 Jun 2021 15:53:32 +0300
Subject: [PATCH] EXR reading: support Z channel if no Y channel

---
 modules/imgcodecs/src/grfmt_exr.cpp | 4 ++++
 1 file changed, 4 insertions(+)

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;