发明授权
US07337969B2 Method for improving the readability of composite images 有权
提高复合图像可读性的方法

Method for improving the readability of composite images
摘要:
A method for improving the readability of composite images by determining available areas on a document where no text or graphics will be printed in visible ink and printing one or more 2-D bar code with invisible ink at a size pre-determined based on the available areas. The one or more auxiliary 2-D bar codes are printed in luminescent ink, either invisible or lightly colored when viewed under white light.
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