Book Review: Perception of Pixelated Images

Frontiers in Psychology

Valérie Goffaux¹ 

关键词: quantization;    pixelation;    spatial frequency;    recognition;    digitization;   

DOI  :  10.3389/fpsyg.2016.01151

学科分类：心理学（综合）

来源: Frontiers

【 摘 要 】

Despite the fact that we feel immersed in a rich and continuous flow of visual sensations, our visual system samples only a small fraction of the luminance variations present in the environment. Such sparse sampling inevitably comes along with a loss of information. And this is advantageous since it decreases the computational and metabolic needs of the system to e.g., generate, classify, and store images. But sampling must be smartly calibrated so that critical cues are not lost. This seems to be the case for the perception of major visual categories, such as faces and letters, which has been found to rely on a restricted but optimized range of spatial resolutions, also called spatial frequencies (SF; Gold et al., 1999; Nasanen, 1999; Majaj et al., 2002).

【 授权许可】

CC BY