Spatial frequency and visual discomfort

摘要: Images created from noise filtered to have an approximately 1/f amplitude spectrum were altered by adding excess energy concentrated at various spatial frequencies. The effects of this manipulation on judgements visual discomfort studied. Visual with a (typical natural images) was judged more comfortable than any image relative increase in contrast within narrow frequency band. A peak centred 0.375-1.5cycles/degree consistently as uncomfortable higher frequency. This finding robust slight differences eccentricity, and when stimuli matched for perceived across These findings are consistent the idea that deviation statistics images could cause because system is optimised encode particular typical scenes.