Case Study · Automotive

3D Sensor OCR and Depth-of-Character Measurement with Automatic PDF Reports

A 3D sensor scan provides both the depth of each character and the image used for OCR — with quick recipe creation, multilevel user access and automatic PDF report generation.
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Industry

Automotive

Application

Vision system for OCR and depth measurement

The Application

OCR plus depth of character from a single 3D scan

In most of the automation industry, OCR is mandatory. Depth of character (DOC) and OCR reading are essential to achieve high accuracy and precision on the production or manufacturing line, improving overall performance and the quality of products.
The primary application was to detect OCR and the depth of characters using a 3D sensor, later improved by adding pattern matching to the program.

Key Factors

  • User-friendly HMI
  • Quick recipe creation
  • Accuracy in depth measurement & OCR
  • Multilevel access to user and operator
  • Automatic PDF report generation

Performance at a Glance

Depth and OCR in one pass

4

Maximum rows per variant, each with its own OCR / depth data.

3D

Sensor scan gives both depth data and the OCR image.

PDF

Report generated automatically.

Operation

How the inspection works

Aurora Vision processing tools turn each 3D frame into depth data and an image for OCR.

01

Acquire the 3D frame

A frame is acquired from the 3D scanner.

02

Scale and pre-process

Aurora Vision tools scale the 3D data and pre-processing produces two outputs: a surface and an image.

03

Depth and OCR

The scaled surface is used to calculate depth data, while the image is used for OCR.

04

Row logic per variant

Rows 1 & 3: OCR and depth of characters. Row 2: OCR and depth of a pattern and single character. Row 4: depth of patterns.

Final Result

Depth and OCR results across all four scans

Result screen — depth inspection with OCR and depth values for four scans

Technology Used

Hardware behind the inspection

3D Sensor

Scans the marked surface to capture characters and patterns in 3D.

Aurora Vision Deep Learning

Scales the 3D data and performs depth calculation and OCR.

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