While conventional, feature-based algorithms start by locating the finder pattern, Cognex's PowerGrid technology looks for a pattern of alternating light and dark modules within the code.
PowerGrid is said to increase read rates in 2D 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.
Unlike previous solutions, PowerGrid technology can locate and read codes even when they exhibit significant damage or suffer complete elimination of the finder pattern, clocking pattern, or quiet zone, Cognex says.
Cognex PowerGrid technology is available on the X models of the DataMan 300 series fixed-mount barcode readers.
