1 绘制的多边形如下图所示。2 调用的库如下。3 主函数如下,首先生成一张三通道的黑色画布,再调用DrawPolygon函数在定义的Mat上添加多边形。4 多边形函数如下,主要介绍下官方提供的cv::fillPloy函数。cv::fillPloy(Mat img,const cv::Point* ppt,const int* npt,int ncounters,Scalar(,,),thickness,...
DrawFilledCircle(atomImg,Point(WINDOW_SIZE/2,WINDOW_SIZE/2)); namedWindow("ImageEll+Circle",CV_WINDOW_NORMAL); imshow("ImageEll+Circle",atomImg); //绘制会多边形 DrawPolygon(rookImg); //显示多边形 namedWindow("polygon",CV_WINDOW_NORMAL); imshow("polygon",rookImg); //绘制矩形 rectangle(rook...
void DrawEllipse(Mat img, double angle); void DrawFilledCircle(Mat img, Point center); void DrawPolygon(Mat img); void DrawLine(Mat img,Point start,Point end); #endif 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. main函数: int main() { Mat...
DrawEllipse( atomImage,-45);//2) draw circleDrawFilledCircle(atomImage, cv::Point(WINDOW_WIDTH/2, WINDOW_WIDTH/2));//draw image 2//1) draw polygonDrawPolygon( rookImage );//2) draw rectanglecv::rectangle(rookImage, cv::Point(0,7*WINDOW_WIDTH/8), ...
绘制椭圆的ellipse函数 DrawEllipse(Mat img, double angle) 其中angle为椭圆旋转角度 绘制矩形的rectangle函数 DrawRectangle 绘制原的circle函数 DrawFilledCircle(Mat img, Point center) 绘制填充的多边形的fillpoly函数 DrawPolygon(Mat img) 12 计时函数 getTickCount和getTickFrequency ...
(rotated_bbox_center,rotated_bbox_size)# drawPolygons(new_img, horizontal_rect, (0, 255, 255))# 输入角度为正值表示逆时针旋转rot_matrix=cv2.getRotationMatrix2D(rotated_bbox_center,-rotated_bbox_angle,1.0)print("rot_matrix: ",rot_matrix)horizontal_rect=np.concatenate([horizontal_rect,...
if( c != 0 ) return 0; c = Drawing_Random_Ellipses( image, window_name, rng ); if( c != 0 ) return 0; c = Drawing_Random_Polylines( image, window_name, rng ); if( c != 0 ) return 0; c = Drawing_Random_Filled_Polygons( image, window_name, rng ); ...
21.4.2 Point Polygon Test 求解图像中的一个点到一个对象轮廓的最短距离。如果点在轮廓的外部, 返回值为负。如果在轮廓上,返回值为 0。如果在轮廓内部,返回值为正。 下面我们以点(50,50)为例: dist = cv2.pointPolygonTest(cnt,(50,50),True) ...
...[凸多边形与凹多边形] [自相交多边形(self-intersecting polygon)] 图片来源自wiki 带符号的凸多边形面积 以点序(x1,y1), (x2, y2)..., (xn, yn...而在常见的图像坐标系(以opencv为例)中, 即图像左上角为原点,水平向右为x轴,垂直向下为y轴的情况下, A>0, 则点序为逆时针, A点序为顺...