OpenCV提取显示一张图片的R,G,B颜色分量调试记录
程序员文章站
2022-07-14 16:37:19
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使用OpenCV可以提分别提取显示一张图片(或者视频)的R,G,B颜色分量。代码如下。
// ConsoleApplication1.cpp : Defines the entry point for the console application.
//
#include "stdafx.h"
#include "cv.h"
#include "highgui.h"
//#include <opencv2/highgui_c.h>
#include <cxcore.h>
#include <opencv2/opencv.hpp>
#pragma warning(disable:4996)
int _tmain(int argc, _TCHAR* argv[])
{
IplImage *img = cvLoadImage("test.bmp", 1);
IplImage *channel_r = cvCreateImage(cvGetSize(img), IPL_DEPTH_8U, 1);
IplImage *channel_g = cvCreateImage(cvGetSize(img), IPL_DEPTH_8U, 1);
IplImage *channel_b = cvCreateImage(cvGetSize(img), IPL_DEPTH_8U, 1);
IplImage *img_r = cvCreateImage(cvGetSize(img), IPL_DEPTH_8U, 3);
IplImage *img_g = cvCreateImage(cvGetSize(img), IPL_DEPTH_8U, 3);
IplImage *img_b = cvCreateImage(cvGetSize(img), IPL_DEPTH_8U, 3);
cvSplit(img, channel_b, channel_g, channel_r, NULL);
cvMerge(channel_b, 0, 0, 0, img_b);
cvMerge(0, channel_g, 0, 0, img_g);
cvMerge(0, 0, channel_r, 0, img_r);
cvNamedWindow("ImageOrigin", CV_WINDOW_AUTOSIZE);
cvNamedWindow("Image_R", CV_WINDOW_AUTOSIZE);
cvNamedWindow("Image_G", CV_WINDOW_AUTOSIZE);
cvNamedWindow("Image_B", CV_WINDOW_AUTOSIZE);
cvShowImage("ImageOrigin", img);
cvShowImage("Image_R", img_r);
cvShowImage("Image_G", img_g);
cvShowImage("Image_B", img_b);
cvSaveImage("img_red.bmp", img_r);
cvSaveImage("img_green.bmp", img_g);
cvSaveImage("img_blue.bmp", img_b);
cvWaitKey(0);
cvReleaseImage(&img);
cvReleaseImage(&img_r);
cvReleaseImage(&img_g);
cvReleaseImage(&img_b);
cvDestroyAllWindows();
}
遇到下面问题:
缺少相应的dll动态库文件,加入相应的动态库
输出如下错误:
缺少bmp文件加入相应的文件
程序运行结果如下:
r
g:
b:
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