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("Rectangle on Image", rect_image); waitKey(); 1. 2. 3. 4. 5. 6. 7. 8. 9. 绘制椭...
importtkinterastkfromPILimportImage,ImageTk,ImageDraw#输入图像的地址path#这儿还要注意定义缩小比例这个参数scale_factor = 0.5,有些图片尺寸太大导致超出电脑屏幕尺寸,所以设置了缩小比例path=r"C:\Users\ASUS\frame2.jpg"# 初始化计数器point_counter=1defon_canvas_click(event):globalpoint_counterx,y=event.x...
voidfillPoly(cv::Mat&img,// Image to be drawn onconstcv::Point*pts,// C-style array of arrays of pointsint npts,// Number of points in 'pts[i]'int ncontours,// Number of arrays in 'pts'constcv::Scalar&color,// Color, BGR formint lineType=8,// Connectedness, 4 or 8int sh...
In order to detect the local maxima and minima of D(x,y,sigma),each sample point is compared to its eight neighbors in the current image and nine neighbors in the scale above and below. It is selected only if it is larger than all of these neighbors or smaller than all of them. 比...
draw_point(img,p,(0,0,255))#Allocate space for Voroni Diagramimg_voronoi = np.zeros(img.shape,dtype = img.dtype)#Draw Voonoi diagramdraw_voronoi(img_voronoi,subdiv) 4,小总结 Delaunay 三角剖分对于第一次接触的小伙伴来说可能还未完全理解,但这一剖分技术对于做人脸识别、融合、换脸是不可或缺...
鼠标滑动的相应函数OnMouseMove(UINTnFlags,CPointpoint) CKouTuBiDoc* pDoc = GetDocument(); ASSERT_VALID(pDoc); if (!pDoc) return; if( pDoc->g_bDrawingBox ) { pDoc->g_rectangle.width = point.x-pDoc->g_rectangle.x; pDoc->g_rectangle.height = point.y-pDoc->g_rectangle.y; ...
绘制使用drawKeypoints方法: 第一个参数image:原始图像,可以使三通道或单通道图像; 第二个参数keypoints:特征点向量,向量内每一个元素是一个KeyPoint对象,包含了特征点的各种属性信息; 第三个参数outImage:特征点绘制的画布
https://www.pyimagesearch.com/2016/03/28/measuring-size-of-objects-in-an-image-with-opencv/ 在图像中测量物体的大小与计算从相机到物体之间的距离是相似的,在这两种情况下,我们需要定义一个比值,它测量每个给定指标的像素个数。 我将其称为「像素/度量」比率,在下一节中我将更正式地定义它。
https://www.pyimagesearch.com/2016/03/28/measuring-size-of-objects-in-an-image-with-opencv/ 在图像中测量物体的大小与计算从相机到物体之间的距离是相似的,在这两种情况下,我们需要定义一个比值,它测量每个给定指标的像素个数。 我将其称为「像素/度量」比率,在下一节中我将更正式地定义它。
draw=ImageDraw.Draw(img_pil)#利用draw绘制中文 text='这是一只猫' draw.text((250,10),text,font=font,fill=(0,0,255)) img=np.array(img_pil)#把图片重新变回ndarray格式才能显示 cv2.imshow('img',img) cv2.waitKey(0) cv2.destroyAllWindows() 3 利用...