Question 1

What is AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents?

Accepted Answer

Django app with a computer vision pipeline that extracts structured billing data from borderless scanned tables (TIFF/JPEG/PNG) via whitespace gap analysis, y-aligned OCR cell grouping, and PaddleOCR — achieving 86.8% accuracy with 14/14 columns and 37/37 rows on the hardest production test case.

Question 2

What problem does AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents solve?

Accepted Answer

Healthcare billing and insurance audit documents arrive as scanned images — often TIFF files of printed tables with no digital text layer. These contain critical billing records: procedure codes, provider names, amounts, dates, copays, and claim identifiers.

Manual data entry is slow (30–60 minutes per 37-row table), error-prone on small amounts and codes, and not scalable during audit cycles. S…

Question 3

Why was AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents built?

Accepted Answer

Borderless billing tables broke every off-the-shelf OCR approach I tried — Tesseract read the text but couldn't tell where one column ended and the next began.

I iterated through 15+ extractor variants until y-coordinate alignment and minimum gap thresholds solved the comma-in-provider-name false split problem. The goal was auditable automation: auto-accept high-confidence cells, flag the rest f…

Question 4

How does AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents work at a high level?

Accepted Answer

Built whitespace projection column detection, y-aligned OCR cell grouping, and per-cell PaddleOCR with confidence flagging — outputting structured Excel/CSV from TIFF, JPEG, PNG, and scanned PDFs via a Django operator UI.

Question 5

What was the business impact of AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents?

Accepted Answer

86.8% automated accuracy on production images — 14/14 columns, 37/37 rows, zero word splits, ~12s per page (~150–200× faster than manual). Low-confidence cells flagged yellow for hybrid human review.

Question 6

What type of project is AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents?

Accepted Answer

AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents is a Computer Vision project delivered in 2025, with AI Engineer ownership across architecture and implementation.

Question 7

What was AI Engineer's role on AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents?

Accepted Answer

Designed the whitespace projection column-detection algorithm for borderless scanned tables. Iterated 15+ extractor variants to y-aligned cell grouping and 8px minimum gap threshold fix. Built PaddleOCR per-cell pipeline with confidence scoring and Tesseract fallback path. Implemented preprocessing chain: deskew, adaptive thresholding, and contrast normalization for faded scans. Delivered Django…

Question 8

What technologies power AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents?

Accepted Answer

AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents uses Django, Python, PaddleOCR, OpenCV, Pillow, PyMuPDF, NumPy, Tesseract, openpyxl, Bootstrap, Django, PaddleOCR, and additional production tooling.

Question 9

What AI capabilities are included in AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents?

Accepted Answer

Dhruvil Patel built AutoBilling at 1POINT1 — a Django computer vision pipeline that extracts structured billing data from borderless scanned tables using whitespace projection column detection, y-aligned PaddleOCR cell grouping, and confidence-based hybrid QC — achieving 86.8% accuracy with 14/14 columns and 37/37 rows in ~12 seconds per page.

Question 10

How does AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents relate to Dhruvil Patel's portfolio?

Accepted Answer

AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents demonstrates production AI engineering in Computer Vision, with measurable outcomes and documented architecture.

Question 11

Can I see a live demo of AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents?

Accepted Answer

No. AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents was built under client confidentiality. Live previews and screenshots are omitted due to client policies and NDAs.

Question 12

Where is the source code for AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents?

Accepted Answer

Implementation detail is covered in the approach, architecture, and tradeoffs sections of this case study.

Question 13

What happens in approach step 1 of AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents?

Accepted Answer

Preprocessing: deskew via Hough rotation detection, brightness/contrast normalization, grayscale conversion, adaptive thresholding to binary.

Question 14

How does AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents handle: Preprocessing: deskew via Hough rotation detection, brightness/contrast normali…?

Accepted Answer

Preprocessing: deskew via Hough rotation detection, brightness/contrast normalization, grayscale conversion, adaptive thresholding to binary.

Question 15

What happens in approach step 2 of AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents?

Accepted Answer

Whitespace column detection: vertical pixel-density projection finds consistent empty vertical strips → column boundary x-coordinates without visible grid lines.

Question 16

How does AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents handle: Whitespace column detection: vertical pixel-density projection finds consistent…?

Accepted Answer

Whitespace column detection: vertical pixel-density projection finds consistent empty vertical strips → column boundary x-coordinates without visible grid lines.

Question 17

What happens in approach step 3 of AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents?

Accepted Answer

Row detection: horizontal projection finds whitespace gaps → row boundary y-coordinates.

Question 18

How does AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents handle: Row detection: horizontal projection finds whitespace gaps → row boundary y-coo…?

Accepted Answer

Row detection: horizontal projection finds whitespace gaps → row boundary y-coordinates.

Question 19

What happens in approach step 4 of AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents?

Accepted Answer

Y-coordinate alignment breakthrough: group PaddleOCR text boxes by y-center instead of fixed row heights — handles variable-height and multi-word cells.

Question 20

How does AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents handle: Y-coordinate alignment breakthrough: group PaddleOCR text boxes by y-center ins…?

Accepted Answer

Y-coordinate alignment breakthrough: group PaddleOCR text boxes by y-center instead of fixed row heights — handles variable-height and multi-word cells.

Question 21

What happens in approach step 5 of AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents?

Accepted Answer

Per-cell extraction: crop each (row, col) intersection, contrast-boost, PaddleOCR with per-cell confidence scoring.

Question 22

How does AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents handle: Per-cell extraction: crop each (row, col) intersection, contrast-boost, PaddleO…?

Accepted Answer

Per-cell extraction: crop each (row, col) intersection, contrast-boost, PaddleOCR with per-cell confidence scoring.

Question 23

What happens in approach step 6 of AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents?

Accepted Answer

Minimum gap threshold (8px): filter single-character whitespace noise that falsely split provider names like 'ESFANDIARIFARD, M.D.,'.

Question 24

How does AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents handle: Minimum gap threshold (8px): filter single-character whitespace noise that fals…?

Accepted Answer

Minimum gap threshold (8px): filter single-character whitespace noise that falsely split provider names like 'ESFANDIARIFARD, M.D.,'.

Question 25

What happens in approach step 7 of AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents?

Accepted Answer

Post-processing: merge split cells, infer column types (date, amount, code, text), normalize dates and currency.

Question 26

How does AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents handle: Post-processing: merge split cells, infer column types (date, amount, code, tex…?

Accepted Answer

Post-processing: merge split cells, infer column types (date, amount, code, text), normalize dates and currency.

Question 27

What happens in approach step 8 of AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents?

Accepted Answer

Hybrid QC: cells below 0.6 confidence flagged yellow in Excel for auditor review; high-confidence cells auto-accepted.

Question 28

How does AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents handle: Hybrid QC: cells below 0.6 confidence flagged yellow in Excel for auditor revie…?

Accepted Answer

Hybrid QC: cells below 0.6 confidence flagged yellow in Excel for auditor review; high-confidence cells auto-accepted.

Question 29

What challenge 1 did AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents face?

Accepted Answer

Borderless tables have no grid lines to detect

Question 30

How was "Borderless tables have no grid lines to detect" solved in AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents?

Accepted Answer

Whitespace projection analysis — vertical pixel-density gaps identify column boundaries without visible borders.

Question 31

What challenge 2 did AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents face?

Accepted Answer

Provider names with commas cause false column splits

Question 32

How was "Provider names with commas cause false column splits" solved in AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents?

Accepted Answer

Minimum gap width threshold of 8px filters single-character whitespace noise mistaken for column separators.

Question 33

What challenge 3 did AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents face?

Accepted Answer

Row heights vary when cells wrap text

Question 34

How was "Row heights vary when cells wrap text" solved in AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents?

Accepted Answer

Y-coordinate alignment groups PaddleOCR text boxes by center-Y position instead of fixed row heights.

Question 35

What challenge 4 did AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents face?

Accepted Answer

Scanned images are skewed

Question 36

How was "Scanned images are skewed" solved in AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents?

Accepted Answer

Deskew preprocessing using Hough transform to detect and correct rotation angle before projection analysis.

Question 37

What challenge 5 did AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents face?

Accepted Answer

Low-contrast faded printouts

Question 38

How was "Low-contrast faded printouts" solved in AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents?

Accepted Answer

Per-image adaptive thresholding and contrast normalization before binarization.

Question 39

What challenge 6 did AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents face?

Accepted Answer

Multi-page TIFF documents

Question 40

How was "Multi-page TIFF documents" solved in AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents?

Accepted Answer

PyMuPDF page iteration with independent per-page extraction and merged export.

Question 41

What result 1 did AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents achieve?

Accepted Answer

86.8% automated accuracy on the hardest production borderless billing image — 14 columns, 37 rows, no visible table borders.

Question 42

What result 2 did AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents achieve?

Accepted Answer

100% column detection (14/14) and 100% row extraction (37/37) with zero word-splitting instances on provider names.

Question 43

What result 3 did AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents achieve?

Accepted Answer

~12 second processing time per page — approximately 150–200× faster than 30–60 minute manual transcription.

Question 44

What result 4 did AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents achieve?

Accepted Answer

Confidence-based flagging: 23 cells below 0.6 threshold highlighted yellow in Excel; auditor corrects 4 manually → final accuracy 98%+.

Question 45

What result 5 did AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents achieve?

Accepted Answer

Handles TIFF (multi-page), JPEG, PNG, and scanned PDF input formats.

Question 46

What did the team learn from AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents (insight 1)?

Accepted Answer

Borderless tables are a whitespace geometry problem before they are an OCR problem — column boundaries exist in pixel density gaps, not grid lines.

Question 47

What did the team learn from AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents (insight 2)?

Accepted Answer

Single-character gaps from punctuation (commas in 'M.D.,') look like column separators until minimum gap thresholds are tuned empirically.

Question 48

What did the team learn from AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents (insight 3)?

Accepted Answer

Y-coordinate alignment beats fixed row heights for real scanned tables where cell content wraps unpredictably.

Question 49

What did the team learn from AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents (insight 4)?

Accepted Answer

Per-cell confidence scores turn a brittle OCR pipeline into an auditable hybrid workflow — auto-accept the easy cells, flag the rest.

Question 50

What did the team learn from AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents (insight 5)?

Accepted Answer

Iterating 15+ extractor variants is normal for domain-specific CV — the breakthrough is usually one geometric insight, not a bigger model.

Question 51

Key takeaway 1 from AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents?

Accepted Answer

86.8% accuracy on borderless billing tables — no visible grid lines

Question 52

Key takeaway 2 from AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents?

Accepted Answer

Whitespace projection + y-alignment solves column split without deep learning

Question 53

Key takeaway 3 from AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents?

Accepted Answer

8px minimum gap threshold fixes comma-in-name false column splits

Question 54

Key takeaway 4 from AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents?

Accepted Answer

Hybrid QC: PaddleOCR confidence flags uncertain cells for auditor review

Question 55

Key takeaway 5 from AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents?

Accepted Answer

~12s per page vs 30–60 min manual entry on 37-row tables

Question 56

How did AI Engineer contribute to AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents (item 1)?

Accepted Answer

Designed the whitespace projection column-detection algorithm for borderless scanned tables.

Question 57

How did AI Engineer contribute to AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents (item 2)?

Accepted Answer

Iterated 15+ extractor variants to y-aligned cell grouping and 8px minimum gap threshold fix.

Question 58

How did AI Engineer contribute to AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents (item 3)?

Accepted Answer

Built PaddleOCR per-cell pipeline with confidence scoring and Tesseract fallback path.

Question 59

How did AI Engineer contribute to AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents (item 4)?

Accepted Answer

Implemented preprocessing chain: deskew, adaptive thresholding, and contrast normalization for faded scans.

Question 60

How did AI Engineer contribute to AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents (item 5)?

Accepted Answer

Delivered Django upload UI with side-by-side image vs extracted table verification view.

Question 61

How was AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents built?

Accepted Answer

Built whitespace projection column detection, y-aligned OCR cell grouping, and per-cell PaddleOCR with confidence flagging — outputting structured Excel/CSV from TIFF, JPEG, PNG, and scanned PDFs via a Django operator UI.

Question 62

What was the outcome of AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents?

Accepted Answer

86.8% automated accuracy on production images — 14/14 columns, 37/37 rows, zero word splits, ~12s per page (~150–200× faster than manual). Low-confidence cells flagged yellow for hybrid human review.

Question 63

What did AI Engineer learn from AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents?

Accepted Answer

Key learnings include Borderless tables are a whitespace geometry problem before they are an OCR problem — column boundaries exist in pixel density gaps, not grid lines., Single-character gaps from punctuation (commas in 'M.D.,') look like column separators until minimum gap thresholds are tuned empirically., Y-coordinate alignment beats fixed row heights for real scanned tables where cell content wraps unpredictably., Per-cell confidence scores turn a brittle OCR pipeline into an auditable hybrid workflow — auto-accept the easy cells, flag the rest., Iterating 15+ extractor variants is normal for domain-specific CV — the breakthrough is usually one geometric insight, not a bigger model..

Question 64

What was AI Engineer's contribution to AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents?

Accepted Answer

Dhruvil Patel contributed across Designed the whitespace projection column-detection algorithm for borderless scanned tables., Iterated 15+ extractor variants to y-aligned cell grouping and 8px minimum gap threshold fix., Built PaddleOCR per-cell pipeline with confidence scoring and Tesseract fallback path., Implemented preprocessing chain: deskew, adaptive thresholding, and contrast normalization for faded scans., Delivered Django upload UI with side-by-side image vs extracted table verification view., Built Excel/CSV export with yellow-highlighted low-confidence cells for hybrid audit workflow., Added multi-page TIFF and scanned-PDF (PyMuPDF) ingestion support., with ownership from design through deployment.

AutoBilling: Computer Vision Pipeline for Extracting Structured Data from Scanned Billing Documents

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