OpenCV Detecting Contours Project
OpenCV is a computer vision library that can be used to process images and identify the boundaries or outlines of shapes within them. These boundaries, known as contours, can be used for a variety...
OpenCV Tutorials
OpenCV Project – Extract Frames from a Video
When we watch a video, we see a continuous stream of images that create the illusion of movement. In computer vision and image processing, it is sometimes necessary to work with these individual frames...
How to Resize Video and Image in OpenCV with Dimensions
Program 1 import cv2 def changeframe(frame,scale=0.5): width = int(frame.shape[1] * scale) # Width of Frame height = int(frame.shape[0] * scale) # Height of Frame dim = (width, height) return cv2.resize(frame,dim,interpolation=cv2.INTER_AREA) img=cv2.imread(“D://opencvapp//wildlifeImages//wildlife-baby-foxes.jpg”) img1=changeframe(img) cv2.imshow(‘Image Window...
OpenCV Project – Graphical Image Rotation Application in OpenCV using Tkinter
Program 1 from tkinter import * import cv2 def displayImage(): print(“This is rorate Image”) img=cv2.imread(“D://opencvapp//wildlifeImages//walking-dog.jpg”) cv2.imshow(‘My Window’,img) def rorateImage1(): print(“This is rorate Image”) img=cv2.imread(“D://opencvapp//wildlifeImages//walking-dog.jpg”) img=cv2.rotate(img,cv2.cv2.ROTATE_90_CLOCKWISE) cv2.imshow(‘My Window’,img) def rorateImage2(): print(“This is rorate Image”) img=cv2.imread(“D://opencvapp//wildlifeImages//walking-dog.jpg”)...
How to Show/Open Dynamic and Multiple Images in OpenCV using Tkinter
Program 1 from tkinter import * import tkinter.messagebox as msg import tkinter.filedialog as fd import cv2 def clickmenu(choice): if(choice==’open’): filename = fd.askopenfilename(parent=myroot, title=’open file window’, filetypes=((“Image”, “*.jpg”), (“All File”, “*.*”))) img=cv2.imread(filename) cv2.imshow(‘Show Window’,img) #...
How to Concatenate Images using OpenCV
Program 1 import cv2 img1=cv2.imread(“D://opencvapp//wildlifeImages//wildlife-baby-foxes.jpg”) img2=cv2.imread(“D://opencvapp//wildlifeImages//deer-wildlife.jpg”) img3=cv2.imread(“D://opencvapp//wildlifeImages//walking-dog.jpg”) img1=cv2.resize(img1,(300,300)) img2=cv2.resize(img2,(300,300)) img3=cv2.resize(img3,(300,300)) #img4=cv2.hconcat([img1,img2,img3]) img4=cv2.vconcat([img1,img2,img3]) cv2.imwrite(“D://opencvapp//wildlifeImages//hcon.jpg”,img4) cv2.imshow(‘Image Window’,img4) # cv2.imshow(‘Image Window’,img2) cv2.waitKey(0) cv2.destroyAllWindows()
How to Crop an Image in OpenCV
Program 1 import cv2 img=cv2.imread(“D://opencvapp//library-img.jpg”) #print(img) # img3=img[100:200,100:1000] # cv2.imwrite(“D://opencvapp//crop.jpg”,img3) cv2.imshow(‘Image Window’,img3) cv2.waitKey(0) cv2.destroyAllWindows()
Image Properties Shape and Size in OpenCV
Program 1 import cv2 img=cv2.imread(“D://opencvapp//library-img.jpg”) cv2.imshow(‘Image Window’,img) # print(img.shape) # print(img.size) cv2.waitKey(0) cv2.destroyAllWindows()
How to Blur an Image in OpenCV
Program 1 import cv2 img=cv2.imread(“D://opencvapp//natureImages//exploring-jungle.jpg”) img=cv2.resize(img,(300,300)) img1=cv2.blur(img,(9,9)) img1=cv2.resize(img1,(300,300)) img2=cv2.GaussianBlur(img,(17,17),10) img2=cv2.resize(img2,(300,300)) img3=cv2.medianBlur(img,19) img3=cv2.resize(img3,(300,300)) img4=cv2.vconcat([img,img1,img2,img3]) #img4=cv2.resize(img4,(1000,1000)) cv2.imshow(‘Image Window’,img4) cv2.waitKey(0) cv2.destroyAllWindows()
How to Draw Circle on Image in OpenCV
Program 1 import cv2 img=cv2.imread(“D://opencvapp//vivek1.jpg”) img=cv2.resize(img,(300,300)) img=cv2.circle(img,(170,100),60,(0,0,255),2) cv2.imwrite(‘cimage.jpg’,img) cv2.imshow(‘Image Window’,img) cv2.waitKey(0) cv2.destroyAllWindows()
