A measurement of the lightness contrast sensitivity under perceptual color space

作者：Xu, Xiangyang; Chen, Guangxue; Cheng, Yao

来源：International Journal of Simulation: Systems, Science and Technology , 2016, 17(31): 3.1-3.5.

DOI：10.5013/IJSSST.a.17.31.03

• CIELab
• Contrast sensitivity
• Contrast sensitivity function
• Human color vision
• Perceptual color space
• Psychophysical experiments
• Spatial frequency
• Spatial frequency response

To obtain the spatial frequency response of human vision under difference lightness, the paper measured the lightness contrast sensitivity by psychophysical experiment. The five color stimuli were selected in perceptual color space CIELAB. A series of sinusoidal grating images were made by Fourier analysis. Those images were displayed randomly on a calibrated color display system. Psychophysical experiments were carried out to obtain data sets of five lightness contrast sensitivity. Five contrast sensitivity CSF) curves have been fitted. The results showed that those CSF curves are different under different lightness. The peaks of the CSF curves are different. The experiment confirmed approximately the spatial frequency range of their peak is between 0.5~7cpd. The tendency of CSF is mainly manifested band-pass characteristics under the moderate lightness and the highly lightness, but shows low-pass characteristic under low lightness.

• 出版日期2016
• 单位华南理工大学