upcbarcode
[Drivers]

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

Last updated 12 September 2005 21:38:45