From cf4f6d412eadbf937ba7f62b690e3ae3a5d10e65 Mon Sep 17 00:00:00 2001
From: Alexander Alekhin <alexander.alekhin@intel.com>
Date: Wed, 23 May 2018 18:26:21 +0300
Subject: [PATCH] interactive-calibration: use empty() method instead of
 checking dimension size

---
 apps/interactive-calibration/frameProcessor.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/apps/interactive-calibration/frameProcessor.cpp b/apps/interactive-calibration/frameProcessor.cpp
index 07b32dbe12..d95e0b8f80 100644
--- a/apps/interactive-calibration/frameProcessor.cpp
+++ b/apps/interactive-calibration/frameProcessor.cpp
@@ -395,7 +395,8 @@ ShowProcessor::ShowProcessor(cv::Ptr<calibrationData> data, cv::Ptr<calibControl
 
 cv::Mat ShowProcessor::processFrame(const cv::Mat &frame)
 {
-    if(mCalibdata->cameraMatrix.size[0] && mCalibdata->distCoeffs.size[0]) {
+    if (!mCalibdata->cameraMatrix.empty() && !mCalibdata->distCoeffs.empty())
+    {
         mTextSize = VIDEO_TEXT_SIZE * (double) frame.cols / IMAGE_MAX_WIDTH;
         cv::Scalar textColor = cv::Scalar(0,0,255);
         cv::Mat frameCopy;