OpenCV学习之路（九）图像对比度、亮度

最新推荐文章于 2024-12-05 09:38:14 发布

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最新推荐文章于 2024-12-05 09:38:14 发布 · 449 阅读

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通常图像操作有两种：

点操作

邻域操作

对比度、亮度调整就是典型的点操作。

简单操作实例如下：

#include<opencv2/opencv.hpp>

using namespace cv;

void on_BrightnessAndContrast(int, void*);

int g_nContrast, g_nBrightness;
int g_nMaxContrast = 300;
int g_nMaxBrightness = 200;
Mat srcImage, dstImage;

int main()
{
	srcImage = imread("cat.jpg");

	dstImage = Mat::zeros(srcImage.size(), srcImage.type());

	namedWindow("【效果图窗口】", 1);
	createTrackbar("对比度", "【效果图窗口】", &g_nContrast, g_nMaxContrast, on_BrightnessAndContrast);
	createTrackbar("亮度", "【效果图窗口】", &g_nBrightness, g_nMaxBrightness, on_BrightnessAndContrast);

	on_BrightnessAndContrast(g_nContrast, 0);
	on_BrightnessAndContrast(g_nBrightness, 0);

	waitKey(0);