opencv笔记8-自带颜色表操作

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本文介绍了OpenCV库中自带的颜色表操作，通过实例展示了如何使用这些颜色表，包括简单的图像显示效果。

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自带颜色表操作

#include<iostream>
#include<opencv2/opencv.hpp>

using namespace std;
using namespace cv;

//自带颜色表
void color_style_demo(cv::Mat& image)
{
	int colorMap[] = {
		COLORMAP_AUTUMN,
		COLORMAP_BONE,
		COLORMAP_JET,
		COLORMAP_WINTER,
		COLORMAP_RAINBOW,
		COLORMAP_OCEAN,
		COLORMAP_SUMMER,
		COLORMAP_SPRING,
		COLORMAP_COOL,
		COLORMAP_PINK,
		COLORMAP_HOT,
		COLORMAP_PARULA,
		COLORMAP_MAGMA,
		COLORMAP_INFERNO,
		COLORMAP_PLASMA,
		COLORMAP_VIRIDIS,
		COLORMAP_CIVIDIS,
		COLORMAP_TWILIGHT,
		COLORMAP_TWILIGHT_SHIFTED
	};

	Mat dst;
	int index = 0;
	while (true)
	{
		int c = waitKey(2000);
		if (c == 27)//esc键
		{
			break;
		}
		applyColorMap(image, dst, colorMap[index % 19]);
		index++;
		imshow("颜色风格", dst);
		if (c == 49)
		{
			imwrite("C:\\Users\\四明\\Pictures\\index.jpg" ,dst);
		}
	}
}

int main()
{
	string path = "C:\\Users\\四明\\Pictures\\QQ图片20200608155343.jpg";
	Mat img = imread(path);
	if (img.empty())
	{
		cout << "图片加载失败！" << endl;
		return -1;
	}
	namedWindow("image", WINDOW_FREERATIO);
	imshow("image", img);
	color_style_demo(img);
	waitKey(0);
	destroyAllWindows();
	return 0;
}