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ClearImage PDF417 Specification
 

See the ClearImage Common Specification specification for additional details about input output and other specifications.

Operations

Find all specified barcodes
Find one barcode at a time
ClearImage DL/ID reader decodes only one (1) symbol per image

Recognition algorithms

High speed for fast recognition of good quality barcode (which meet the         code specification requirements)
Highest Accuracy for heuristic recognition of damaged and out of spec     barcodes

Barcode Orientation

Horizontal, Vertical, Diagonal, Upside-down

Number of Barcodes

Unlimited

Barcode Location

Anywhere on the image or with specified zone.Zone is any rectangular regions-of-interest.

Supported PDF417 Features
(partial list)

Truncated PDF417
Reed-Solomon Error Correction Levels: 0 to 8
All Compaction Modes: Text, Byte, Numeric
Macro PDF417 processing
Global Label Identifier (GLI) processing

Recognition Output

Decoded data as Text
Decoded data as Hex Array
GLI, Macro and Reserved codewords transmitted per AIM standard
Barcode type (symbology)
Barcode location (encompassing rectangle)
Barcode orientation (rotated clockwise, rotated counterclockwise, upside         down, diagonal

Diagnostic tools

Output codewords before decoding
Measure barcode module size (in pixels)
Recognition confidence level (0% to 100%)

References

ANSI/AIM USS PDF417
ISO/IEC 15438

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