Adaptive filtering for noise reduction in hue saturation intensity color space

Hyun Wook Park; Lakshmanan Gopishankar; Yongmin Kim

doi:10.1117/1.1475996

1 June 2002 Adaptive filtering for noise reduction in hue saturation intensity color space

Hyun Wook Park, Lakshmanan Gopishankar, Yongmin Kim

Optical Engineering, Vol. 41, Issue 6, (June 2002). https://doi.org/10.1117/1.1475996

Even though the hue saturation intensity (HSI) color model has been widely used in color image processing and analysis, the conversion formulas from the RGB color model to HSI are nonlinear and complicated in comparison with the conversion formulas of other color models. When an RGB image is degraded by random Gaussian noise, this nonlinearity leads to a nonuniform noise distribution in HSI, making accurate image analysis more difficult. We have analyzed the noise characteristics of the HSI color model and developed an adaptive spatial filtering method to reduce the magnitude of noise and the nonuniformity of noise variance in the HSI color space. With this adaptive filtering method, the filter kernel for each pixel is dynamically adjusted, depending on the values of intensity and saturation. In our experiments we have filtered the saturation and hue components and generated edge maps from color gradients. We have found that by using the adaptive filtering method, the minimum error rate in edge detection improves by approximately 15%.

©(2002) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Hyun Wook Park, Lakshmanan Gopishankar, and Yongmin Kim "Adaptive filtering for noise reduction in hue saturation intensity color space," Optical Engineering 41(6), (1 June 2002). https://doi.org/10.1117/1.1475996

Published: 1 June 2002

ACCESS THE FULL ARTICLE

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