Check if image's resolution is more than 16 megapixels in Python?-CodePudding

I'm trying to check if an image has a maximum resolution of 16 megapixels or not. Here is my code:

from PIL import Image
im = Image.open("image.jpg")
width, height = im.size
resolution = width * height
if resolution > (16 * 1000000):
    print("Image has a resolution greater than 16 megapixels.")
else:
    print("Image has a resolution less than or equal to 16 megapixels.")

But I'm not sure if this is working as I don't know what megapixels represent.

CodePudding user response：

The provided code correctly determines whether or not the image resolution exceeds 16 megapixels (1 megapixel = 1 million pixels).

However, the relationship between the number of megapixels and image dimensions is not direct.

The number of megapixels indicates the total number of pixels in the image but does not indicate the width and height. This is due to the fact that these measurements are dependent on the aspect ratio, which is the ratio of width to height.

Given that, it is impossible to convert megapixels to image dimensions without a fixed aspect ratio.