In this paper we show some experimental results of image recognition, and discuss them from the viewpoint of human visual sensitivity for spatial frequency. We have been interested in how we see digital halftone images which consists of halftone dots.
Shigeru Kitakubo, Yasushi Hoshino, "Some Characteristics on Human Visual Sensitivity for Spatial Frequency of Digital Halftone Images" in Proc. IS&T Int'l Conf. on Digital Printing Technologies (NIP21), 2005, pp 118 - 121, https://doi.org/10.2352/ISSN.2169-4451.2005.21.1.art00034_1