From 0ffc186680753febc7b5b70688dd795f2b6ed518 Mon Sep 17 00:00:00 2001
From: Apoorv Goel <35146783+UnderscoreAsterisk@users.noreply.github.com>
Date: Wed, 3 Oct 2018 18:20:04 +0530
Subject: [PATCH] Merge pull request #12731 from UnderscoreAsterisk:fix-12012

* fix #12012

* Replace CV_StsBadFlag with Error::StsBadFlag
---
 modules/calib3d/src/calibration.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/modules/calib3d/src/calibration.cpp b/modules/calib3d/src/calibration.cpp
index 460914a741..112e4c9b89 100644
--- a/modules/calib3d/src/calibration.cpp
+++ b/modules/calib3d/src/calibration.cpp
@@ -3540,6 +3540,9 @@ double cv::stereoCalibrate( InputArrayOfArrays _objectPoints,
                           OutputArray _Emat, OutputArray _Fmat, int flags,
                           TermCriteria criteria)
 {
+    if (flags & CALIB_USE_EXTRINSIC_GUESS)
+        CV_Error(Error::StsBadFlag, "stereoCalibrate does not support CALIB_USE_EXTRINSIC_GUESS.");
+
     Mat Rmat, Tmat;
     double ret = stereoCalibrate(_objectPoints, _imagePoints1, _imagePoints2, _cameraMatrix1, _distCoeffs1,
                                  _cameraMatrix2, _distCoeffs2, imageSize, Rmat, Tmat, _Emat, _Fmat,