From f4848df8e32e287c4d835149cca516d1049ee2a0 Mon Sep 17 00:00:00 2001
From: Liu Yunhuang <1369215984@qq.com>
Date: Mon, 15 Apr 2024 13:23:40 +0800
Subject: [PATCH] fix(issue#9): more bigger adaptive threshod region and use
 CALIB_CB_CLUSTERING to find wide field of vision features.

---
 src/calibration/concentricRingCalibrator.cpp | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/calibration/concentricRingCalibrator.cpp b/src/calibration/concentricRingCalibrator.cpp
index 426bcbd..9a43900 100644
--- a/src/calibration/concentricRingCalibrator.cpp
+++ b/src/calibration/concentricRingCalibrator.cpp
@@ -136,7 +136,7 @@ bool ConcentricRingCalibrator::findConcentricRingGrid(
     cv::Mat src_display = inputImg.clone();
     cv::Mat threshodFindCircle = inputImg.clone();
     cv::adaptiveThreshold(threshodFindCircle, threshodFindCircle, 255,
-                          cv::ADAPTIVE_THRESH_MEAN_C, cv::THRESH_BINARY, 41, 0);
+                          cv::ADAPTIVE_THRESH_MEAN_C, cv::THRESH_BINARY, 51, 0);
     // cv::threshold(threshodFindCircle, threshodFindCircle, 0, 255,
     // cv::THRESH_BINARY | cv::THRESH_OTSU);
 
@@ -154,8 +154,8 @@ bool ConcentricRingCalibrator::findConcentricRingGrid(
     if (!isFind) {
         pointsOfCell.clear();
         isFind = cv::findCirclesGrid(
-            threshodFindCircle, cv::Size(patternSize.height, patternSize.width),
-            pointsOfCell, cv::CALIB_CB_SYMMETRIC_GRID, detector);
+            threshodFindCircle, cv::Size(patternSize.width, patternSize.height),
+            pointsOfCell, cv::CALIB_CB_SYMMETRIC_GRID | cv::CALIB_CB_CLUSTERING, detector);
 
         if (!isFind) {
             return false;