upcbarcode

UPC barcode detection. More...

UPC barcode detection.

Todo:

This driver is currently disabled because it needs to be updated to the Player 2.0 API.

The upcbarcode driver searches for standard, single-digit UPC barcodes in a camera image (a sample barcode is shown below)

Sample UPC barcode (one digit)

Compile-time dependencies

• OpenCV

Provides

• blobfinder : outputs blob information on detected barcodes
• camera : passes through image data from underlying camera device (optional)

Requires

• camera

Configuration requests

• none

Configuration file options

• edgeThresh (float)
  • Default: 20
  • Edge threshold
• bit_width (length)
  • Default: 0.08 m
  • Width of a single bit
• bit_count (integer)
  • Default: 3
  • Number of bits per digit
• guardMin (integer)
  • Default: 3
  • Minimum height of bit (pixels)
• guardTol (length)
  • Default: 0.2 m
  • Height tolerance for bit (ratio)
• digit_errFirst (float)
  • Default: 0.5
  • Error threshold on the best bit
• digit_errSecond (float)
  • Default: 1.0
  • Error threshold on the second-best bit

Example

driver
(
  name "upcbarcode"
  provides ["blobfinder:0"]
  requires ["camera:0"]
)

Author

Andrew Howard