INSPECTION SYSTEM USING COMPRESSED IMAGE DATA

摘要

A video inspection system which accomplishes its bit-mapped graphical information is compressed by converting it to a format within the frequency domain (30). Compressed data is analyzed against data in a database to determine acceptability of the specimen (32). Specimens for which an acceptability determination is not completed by this comparison are subject to a more conventional analysis of the bit-mapped data corresponding to the earlier analyzed compressed data (32). This system is applied both to discrete specimen analysis as well as continuous specimen analysis such as occurs in web inspections.