Kornowski Jane A, Petersik J Timothy
Department of Psychology, Ripon College, WI 54971, USA.
J Gen Psychol. 2003 Jul;130(3):229-44. doi: 10.1080/00221300309601156.
Researchers often assume a critical band of spatial frequencies is required for face recognition. Also, many studies have not measured the contrast required for recognition. On Day 1, observers viewed high-pass-filtered (HP), low-pass-filtered (LP), or unfiltered (UF) faces. On Day 2, they viewed a variety of faces, some of which were LP filtered, HP filtered, and UF. Observers adjusted contrast until they achieved both detection and recognition. Observers were most accurate and sensitive when filtered faces agreed in spatial-frequency content across days. Faces differing in spatial-frequency content were least well recognized. Unfiltered faces always fell between the 2 extremes. Observers generally used less contrast to recognize unfiltered than filtered faces. Correspondence of information between inspection and testing seemed more important than any particular range of frequencies.
研究人员通常认为人脸识别需要一个关键的空间频率带。此外，许多研究并未测量识别所需的对比度。在第一天，观察者观看高通滤波（HP）、低通滤波（LP）或未滤波（UF）的面部图像。在第二天，他们观看各种面部图像，其中一些是经过LP滤波、HP滤波和未滤波处理的。观察者调整对比度，直到他们实现检测和识别。当跨天的滤波面部图像在空间频率内容上一致时，观察者最为准确和敏感。空间频率内容不同的面部图像最难被识别。未滤波的面部图像总是处于两个极端之间。与滤波后的面部图像相比，观察者通常使用较低的对比度来识别未滤波的面部图像。检查和测试之间信息的对应似乎比任何特定的频率范围更重要。
