Dr. Jung-Chih Su Profile

Dr. Jung-Chih Su

at Industrial Technology Research Institute

SPIE Involvement:

Author

Publications (1)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 10 February 2009 Paper

Quantifying the image-sticking phenomenon for the checkerboard stimuli: contrast, spatial frequency, edge effect, and noise interference

Jung-Chih Su

Proceedings Volume 7240, 72401X (2009) https://doi.org/10.1117/12.824526

KEYWORDS: Contrast sensitivity, Spatial frequencies, Visualization, Convolution, LCDs, Visual system, Interference (communication), Image processing, Electronic filtering, Modulation

Read Abstract +

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.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years