15 Mar Draw a line on an image with OpenCV

In OpenCV, use the cv2.line() function to draw a line on an image. First, we will read the image using the imread() function in OpenCV.

Let us now see the example:

The following is the output:

Explanation:

This Python script uses the OpenCV library to load, resize, and draw a line on an image:

• It begins by importing the OpenCV library, followed by reading an image from the specified file path and loading it in color.
• The image is resized to dimensions of 600×600 pixels using the cv2.resize() function.
• After resizing, the script draws a blue line on the image, starting at coordinates (10, 0) and ending at coordinates (150, 150). The cv2.line() function is used for this purpose, where the first argument specifies the image, the second argument specifies the starting point, the third argument specifies the ending point, the fourth argument specifies the color (blue), and the fifth argument specifies the thickness (10 pixels).
• Finally, the script displays the resized image with the drawn line in a window titled “Image Resized:” using cv2.imshow(), waits for a key press with cv2.waitKey(0), and closes all OpenCV windows with cv2.destroyAllWindows().
• This process allows users to view the modified image with the drawn line and close the display window at their convenience.

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