Fix "ValueError: height and width must be > 0" in minmax_size method

[ali6parmak]

Bug Report and Fix

Description of the Bug

I have a pipeline to find where the formulas are located in a page, and pass their coordinates to rapid-latex-ocr to extract them in LaTeX format. And this process is failed in the following specific image that is found by my pipeline (even though there is no formula in it, it should not fail the process):

Error Message

ValueError: height and width must be > 0

Steps to Reproduce

1. Install rapid-latex-ocr
2. Download the image and try to process it with rapid-latex-ocr

• The error occurs in the minmax_size function in utils.py

Proposed Fix

In the file rapid_latex_ocr/utils.py, in the minmax_size function, after this line:

size = np.array(img.size) // max(ratios)

add this line to ensure the size is at least 1:

size = np.maximum(size, 1)

Additional Notes

This fix has been tested on Python 3.11 and resolves this error.

[SWHL]

LGTM