img2 = np.zeros((400,400), dtype=np.uint8)# Draw a rectangle on img1cv2.rectangle(img1, (50,50), (350,350), (255,255,255), -1)# Draw a circle on img2cv2.circle(img2, (200,200),150, (255,255,255), -1)# Perform bitwise ANDbitwise_and = cv2.bitwise_and(img1, img2...
self.image_for_show = self.original_image.copy() def draw(self): """ draw rects on image_for_show """ for rect in self.rects: cv2.rectangle(self.image_for_show, rect.tl, rect.br, color=self.color, thickness=self.thickness) def draw_current_rect(self): """ draw current rect ...
绘制图形 利用opencv提供的绘制图形api可以轻松在图像上绘制各种图形,比如直线,矩形,圆,椭圆等图形。...指定先的开始与结束的位置 color:颜色 thickness:线宽 lineType:线型,线型为-1,4,8,16,默认为8 shift:坐标缩放比例 rectangle()参数同上,...
Mat rect_image = image.clone(); // Define the starting and end points for the rectangle Point start_point(300,115); Point end_point(475,225); // Draw a rectangle using the rectangle() function rectangle(rect_image, start_point, end_point, Scalar(0,0,255), 3, 8, 0); imshow("R...
OpenCV中矩形绘制的函数是rectangle,其函数原型如下: void rectangle(InputOutputArray img, //需绘制矩形的图像 Point pt1, //矩形的一个顶点 Point pt2, //矩形的另一个顶点 const Scalar &color, //矩形线条颜色 int thickness = 1, //线宽,默认为1 ...
(image, person): x, y, w, h = person cv2.rectangle(image, (x, y), (x + w, y + h), (0, 255, 255), 2) img = cv2.imread("people.jpg") hog = cv2.HOGDescriptor() # 启动检测器对象 hog.setSVMDetector(cv2.HOGDescriptor_getDefaultPeopleDetector()) # 指定检测器类型为人体 found...
OpenCV 提供了绘制直线的函数 cv2.line()、绘制矩形的函数 cv2.rectangle()、绘制圆的函数cv2.circle()、绘制椭圆的函数 cv2.ellipse()、绘制多边形的函数 cv2.polylines()、在图像内添加文字的函数 cv2.putText()等多种绘图函数。 这些绘图函数有一些共有的参数, 主要用于设置源图像、颜色、线条属性等。
imagecv::Mat original=cv::imread(image_name);cv::drawContours(original,contours,-1,// draw all contourscv::Scalar(255,255,255),// in white-1);// with a thickness of 2cv::namedWindow("Contours on Animals");cv::imshow("Contours on Animals",original);// Let's now draw black ...
filename: A string representing the file name. The filename must include image format like .jpg, .png, etc. image: Itisthe image thatisto be saved. Example cv2.imwrite('images/img',img) 读取视频并与网络摄像头集成 读取视频文件与在OpenCV中读取图像文件非常相似,区...
private void basicDrawOnCanvas() { // 创建Bitmap对象 Bitmap bm = Bitmap.createBitmap(500, 500, Bitmap.Config.ARGB_8888); // 创建画布与画笔风格 Canvas canvas = new Canvas(bm); Paint p = new Paint(); p.setColor(Color.BLUE); p.setStyle(Paint.Style.FILL_AND_STROKE); // 绘制直线...