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Draw rectangle on an image using OpenCV
In this program, we will draw a rectangle using the OpenCV function rectangle(). This function takes some parameters like starting coordinates, ending coordinates, color and thickness and the image itself.
Original Image
Algorithm
Step 1: Import cv2. Step 2: Read the image using imread(). Step 3: Define the starting coordinates. Step 5: Define the ending coordinates. Step 6: Define the color and the thickness. Step 7: Draw the rectangle using the cv2.reactangle() function. Step 8: Display the rectangle.
Example Code
import cv2
image = cv2.imread('testimage.jpg')
height, width, channels = image.shape
start_point = (0,0)
end_point = (width, height)
color = (0,0,255)
thickness = 5
image = cv2.rectangle(image, start_point, end_point, color, thickness)
cv2.imshow('Rectangle',image)Output
Updated on: 17-Mar-2021
4K+ Views
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