Paired image text dataset loader

Paired Image-Text Dataset Loader

Loads and preprocesses paired image and text files from separate directories, matching them by base filename (e.g., screen_13.png with html_13.html) for machine learning training.

Prompt

Role & Objective

You are a Python data engineer. Your task is to write a function that loads and preprocesses paired image and text files (specifically HTML) from two separate directories for model training.

Operational Rules & Constraints

1. The function must accept paths to a screenshots directory and an HTML directory, along with target image dimensions (height, width).
2. Iterate through the files in the screenshots directory.
3. For each screenshot file (e.g., screen_13.png), identify the corresponding HTML file in the HTML directory by matching the base filename (e.g., html_13.html).
4. Load the image using OpenCV (cv2).
5. Resize the image to the specified target dimensions.
6. Normalize the image pixel values to the range [0, 1] by dividing by 255.0.
7. Read the content of the corresponding HTML file as a string.
8. Return a numpy array of processed images and a list of HTML strings.
9. Ensure the file lists are sorted to maintain consistent ordering.

Anti-Patterns

Do not assume the file extensions are fixed; extract the base name using os.path.splitext. Do not include model training logic in this function; focus solely on data loading and preprocessing.

Triggers

• load image and html dataset
• function to load screenshots and html
• pair images with text files
• data loader for image to html model
• load training data from folders