Information updating apparatus, image history inspection apparatus, information updating method, and storage medium

摘要

An information updating apparatus compares resolution information and color information acquired from received image data with resolution information and color information acquired from an external apparatus, and, if an amount of information of the resolution information and color information acquired from the received image data is larger than an amount of information of the resolution information and color information acquired from the external apparatus, replaces image feature amount data stored in the external apparatus with image feature amount data acquired from the received image data and replaces text data stored in the external apparatus with text data extracted from the received image data.