1. 程式人生 > >cvFloodFill() 漫水填充演算法

cvFloodFill() 漫水填充演算法

感性認識為:畫圖板的填充工具和photoshop的容差索套工具混合而成的一個工具

函式原型:

CVAPI(void)  cvFloodFill( CvArr* image, CvPoint seed_point,
                          CvScalar new_val, CvScalar lo_diff CV_DEFAULT(cvScalarAll(0)),
                          CvScalar up_diff CV_DEFAULT(cvScalarAll(0)),
                          CvConnectedComp* comp CV_DEFAULT(NULL),
                          int flags CV_DEFAULT(4),
                          CvArr* mask CV_DEFAULT(NULL));

image影象名稱;

seed_point從哪一點開始塗色;

new_val塗上的新顏色;

up_diff,lo_diff上下容差;

測試用圖:

程式程式碼:

#include <highgui.h>
#include<cv.h> 
using namespace std;

int main()
{
	IplImage *img_in = cvLoadImage("test.jpg",3);
	IplImage *img_out =cvCreateImage(cvSize(img_in->width,img_in->height),IPL_DEPTH_8U,3);
	
	cvNamedWindow("img_in",CV_WINDOW_AUTOSIZE);
	cvShowImage("img_in",img_in);

	cvCopy(img_in,img_out);

	cvFloodFill(img_out,cvPoint(200,50),cvScalar(34,180,238),cvScalarAll(10),cvScalarAll(10));
	cvFloodFill(img_out,cvPoint(80,330),cvScalar(34,180,238),cvScalarAll(20),cvScalarAll(10));
	cvFloodFill(img_out,cvPoint(170,500),cvScalar(34,180,238),cvScalarAll(20),cvScalarAll(10));
	cvFloodFill(img_out,cvPoint(500,600),cvScalar(34,180,238),cvScalarAll(50),cvScalarAll(50));

	cvFloodFill(img_out,cvPoint(0,0),cvScalar(230,224,176),cvScalarAll(20),cvScalarAll(20));
	cvFloodFill(img_out,cvPoint(500,0),cvScalar(230,224,176),cvScalarAll(20),cvScalarAll(20));
	cvFloodFill(img_out,cvPoint(150,550),cvScalar(230,224,176),cvScalarAll(20),cvScalarAll(20));
	cvFloodFill(img_out,cvPoint(140,600),cvScalar(230,224,176),cvScalarAll(20),cvScalarAll(20));

	cvFloodFill(img_out,cvPoint(330,320),cvScalar(181,228,255),cvScalarAll(10),cvScalarAll(5));
	cvFloodFill(img_out,cvPoint(200,350),cvScalar(181,228,255),cvScalarAll(10),cvScalarAll(5));

	cvNamedWindow("img_out",CV_WINDOW_AUTOSIZE);
	cvShowImage("img_out",img_out);

	cvWaitKey(0);
	cvDestroyAllWindows();
	cvReleaseImage(&img_in);
	cvReleaseImage(&img_out);

	return 0; 
}


執行結果: