Using watermark visibility measurements to select an optimized pair of spot colors for use in a binary watermark
Some spot colors such as blue, black and green reflect very little red light and are difficult to modulate with a watermark at low visibility to a human observer. The visibility measurements that have been made with the Digimarc watermark enables the selection of a complementary color to the base color which can be detected by a POS barcode scanner but is imperceptible at normal viewing distance.
Document Type: Research Article
Publication date: January 26, 2020
This article was made available online on January 26, 2020 as a Fast Track article with title: "New results for aperiodic, clustered-dot halftoning".
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