This study aimed to determine the relationship between the image-sticking phenomenon and human visual
perception. The contrast sensitivity of various checkerboard patterns was measured over a wide range of spatial frequencies.
Four subjective tests were designed to determine the contrast threshold of spatial frequency, edge effect, and noise
interference for the checkerboard stimuli. The experimental results were divided into four parts: (1) Special frequency: the
contrast sensitivity remains on 45 dB (dB = 20 log10 (1/contrast)) steadily in low-spatial frequency. The contrast sensitivity
dropped drastically when the spatial frequency was increased from 0.5 to 1.3(log C/deg). The spatial frequency 0.5 (log
C/deg) had maximum contrast sensitivity (2) Edge effect: the original checkerboard pattern was filtered by convolution
with the different mean filter sizes to produce a variety of scale blurred edges, and to estimate the influence of the edge
effect as regards human perception. The results showed that sharper edges of checkerboard stimuli can affect the contrast
threshold (3) Gaussian noise: checkerboard stimuli add noise with Gaussian distribution to evaluate the addition of the
noise effect for checkerboard stimuli. The low-contrast checkerboard stimuli were affect that when σ becomes greater and
the level of contrast sensitivity drops (4) Simultaneous edge effect and Gaussian noise interference: the level of contrast
sensitivity is lower than the others and the curve of contrast sensitivity is similar to that of Gaussian noise. According to the
experimental result the contribution of the spatial frequency, edge effect, and noise interference for human visual
perception could be determined.