Drawing shapes over image using opencv. rectangle, line, polygon, circle, filled area using open cv

OpenCV offers a comprehensive set of functions for drawing various shapes, lines, and text onto images. These functions allow users to annotate images for visualization or analysis purposes. Here's a glimpse into how you can leverage OpenCV to draw shapes over an image: Importing OpenCV: Begin by importing the OpenCV library into your Python environment. This can be done with a simple import cv2 statement. Loading an Image: Use OpenCV's cv2.imread() function to load an image from your file system into memory. Drawing Shapes: OpenCV provides several functions for drawing shapes, including lines, circles, rectangles, and polygons. These functions typically follow a pattern where you specify the image to draw on, the shape parameters, and other optional settings. cv2.line(): Draws a line segment between two points. cv2.circle(): Draws a circle with a specified center and radius. cv2.rectangle(): Draws a rectangle with given top-left and bottom-right coordinates. cv2.polylines(): Draws a polygon connecting the specified points. cv2.putText(): Writes text on the image at a specified position. Displaying the Image: After drawing the desired shapes on the image, you can display the modified image using cv2.imshow() and wait for user input to close the window. Saving the Image: Optionally, you can save the annotated image to your file system using cv2.imwrite().

Видео Drawing shapes over image using opencv. rectangle, line, polygon, circle, filled area using open cv автора Математические Миры