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 b
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 ...
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...
让我们围绕掌门的脸画一个矩形: # draw a 2px thick red rectangle surrounding the face# 围绕面绘制一个2像素厚的红色矩形output=image.copy()cv2.rectangle(output,(430,40),(800,450),(0,0,255),2)cv2.imshow("Rectangle",output)cv2.waitKey(0) 首先,出于刚才解释的原因,我们在第65行复制了一份...
# draw a final rectangle (blue and filled in ) blue = (255, 0, 0) cv2.rectangle(canvas, (200, 50), (225, 125), blue, -1) plt_imshow("Canvas", canvas) # 第一个参数是我们要在其上绘制矩形的图像。我们想利用我们的帆布,因此我们将其传递给方法。
imshow(imageCircle[:,:,::-1]) 在这里插入图片描述 3.3 画个矩形cv2.rectangle 使用cv2.rectangle函数可以在图像上绘制矩形,函数语法为:img = cv2.rectangle(img, pt1, pt2, color[, thickness[, lineType[, shift]]])。其中,pt1,pt2为矩形顶点,通常使用左上角和右下角顶点。 imageRectangle = image...
MyEllipse( atom_image, 90 ); MyEllipse( atom_image, 0 ); MyEllipse( atom_image, 45 ); MyEllipse( atom_image, -45 ); MyFilledCircle( atom_image, Point( w/2, w/2) ); And to draw the rook we employed MyLine, rectangle and a MyPolygon: 并画一个车,使用 MyLine, rectangle and...
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,...
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...