From 54d82711eb2c97f34389059343afdb1cf7b12e22 Mon Sep 17 00:00:00 2001 From: The Magician Date: Wed, 15 May 2024 12:19:06 +0100 Subject: [PATCH] Convert to grayscale before doing edge detection --- a_scanner_darkly/main.cpp | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/a_scanner_darkly/main.cpp b/a_scanner_darkly/main.cpp index 4bbd9ee..eb964e4 100644 --- a/a_scanner_darkly/main.cpp +++ b/a_scanner_darkly/main.cpp @@ -20,11 +20,12 @@ int main(int argc, char** argv ) { cv::createTrackbar(LOWER_THRESHOLD_TRACKBAR_NAME, WINDOW_NAME, &g_Canny_lower_threshold, 1000, NULL); cv::createTrackbar(UPPER_THRESHOLD_TRACKBAR_NAME, WINDOW_NAME, &g_Canny_upper_threshold, 1000, NULL); - cv::Mat frame, cannyFrame; + cv::Mat frame, grayscaleFrame, cannyFrame; while (true) { cap >> frame; - cv::Canny(frame, cannyFrame, g_Canny_lower_threshold, g_Canny_upper_threshold); + cv::cvtColor(frame, grayscaleFrame, cv::COLOR_BGR2GRAY); + cv::Canny(grayscaleFrame, cannyFrame, g_Canny_lower_threshold, g_Canny_upper_threshold); cv::imshow(WINDOW_NAME, cannyFrame);