opencv c++基本阈值操作

最新推荐文章于 2024-08-04 20:52:03 发布

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本文展示了一个使用OpenCV进行图像阈值处理的C++示例程序，通过创建滑动条来动态调整阈值，实现了对灰度图像的二值化处理，并展示了处理后的效果。

#include<opencv2\opencv.hpp>
#include<iostream>
#include<math.h>

using namespace cv;
Mat src, dst,gray_src;
int threshold_value = 127;
int threshold_max = 255;
const char* output_window = "output_window";
void Threshold_Demo(int, void*);
int main()
{	
	src = imread("C:/Users/asus/Desktop/tupian/1.jpg");
	if (src.empty())
	{
		printf("could not load image...\n");
		return -1;
	}
	namedWindow("input image", WINDOW_AUTOSIZE);
	imshow("input image", src);
	namedWindow(output_window, WINDOW_AUTOSIZE);
	cvtColor(src, gray_src, COLOR_BGR2GRAY);
	createTrackbar("Threshold_Demo", output_window, &threshold_value, threshold_max, Threshold_Demo);
	Threshold_Demo(0, 0);
	
	
	waitKey(0);
	return 0;

}
void Threshold_Demo(int, void*)
{
	cvtColor(src, gray_src, COLOR_BGR2GRAY);
	//threshold(gray_src, dst,threshold_value, threshold_max, THRESH_BINARY);
	threshold(gray_src, dst,threshold_value, threshold_max, THRESH_BINARY_INV);
	imshow(output_window, dst);


}