Process for making image index and a system using the image index

The invention discloses a process for making image index and a system using the image index characterized by attaching an image index easy to be ignored by human eyes on the surface of a subject. Theimage index can coexist with the main information of the surface of a subject, such as patterns or ch...

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1. Verfasser: YAOHONG CAI
Format: Patent
Sprache:eng
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