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Download image via Service Titan - Coggle Diagram

- - - - Attempt to determine age
        
        age,
        confidence,
        precision (day,month,year),
        explainability trail
        
        Return age and confidence score
        
        where should it go? Back into Service Titan?
        
        3b. Try match manufacturer's logo or label format
        
        3c. Iterate over all text values using a dictionary of manufacturer serial number rules. Assign a confidence vote for each iteration.
        
        Dictionary includes regex patterns for serial numbers per manufacturer per date range
        
        If manufacturer was determined in previous step, only iterate using dictionary entries for that manufacturer
        
        3a. Try to find a direct date value. Break if found otherwise continue.
    - - useful when images include more than just the label or multiple labels
      - may not work if label is damaged or image quality is poor. In this case, proceed to next step using full image.
    - - unskew (four-point transform), denoise, contrast-limited adaptive histogram equalization (CLAHE), adaptive thresholding; try inverted text if needed.
    - - Try 2 OCR passes and reconcile:
        
        General OCR (Tesseract w/ LSTM or PaddleOCR)
        
        Serial/model-focused OCR (whitelists: A–Z, 0–9, - / .), higher DPI (upsampling + binarization).
    - - Remove likely OCR confusions: O/0, I/1, B/8, Z/2, S/5
      - Compute string confidence using character prob. vectors + Levenshtein to nearest valid pattern