cv2.imwrite with 2 parameters in filename

In OpenCV, the cv2.imwrite() function is used to save an image to a specified file. The function typically takes two parameters: the filename and the image object you want to save. If you want to include two parameters in the filename itself (for example, to encode some properties of the image or to differentiate between multiple saved images), you can simply format the filename string before passing it to cv2.imwrite().

Here's an example in Python:

import cv2

# Assume we have an image loaded in 'img'
# img = cv2.imread('input_image.png')

# Let's say we want to include two parameters in the filename: width and height
width = img.shape[1]
height = img.shape[0]

# Format the filename with the desired parameters
filename = f"image_{width}x{height}.png"

# Save the image with the formatted filename
cv2.imwrite(filename, img)

In this example, the filename is created using an f-string to embed the width and height of the image directly into the filename. This results in a filename such as image_640x480.png, assuming the width is 640 pixels and the height is 480 pixels.

Remember that you can use any other method to construct the filename string, such as string concatenation or the str.format() method. The key is to define the filename before passing it to the cv2.imwrite() function.