Cognex has introduced its PowerGrid technology, a texture-based location algorithm that, the company says, takes an inside-out approach to reading 2-D matrix and Direct Part Mark (DPM) codes. While conventional feature-based algorithms start by locating the finder pattern, PowerGrid technology looks for a pattern of alternating light and dark modules within the code.
The company claims this technology increases read rates in 2-D barcode-reading applications where a part’s geometry, poor lighting, occlusion, or print-registration errors make it difficult to capture an image of the entire code.
www.cognex.com
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