VGEF: Contrast enhancement of dark images using value gap expansion force and sorted histogram equalization

Youngbae Kim, Jin Hwan Kim, Chang-Su Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We propose a novel contrast enhancement method for dark images using the value gap expansion force (VGEF) and the sorted histogram equalization. Based on the observation that the inter-pixel relationship is analogous to the electrostatic force, we define the pixel field spread around each pixel and the pixel mass at each pixel position. We compute the VGEF exerted to a pixel by multiplying the pixel field and the pixel mass. Also, we sort the pixels of the same value into 5 clusters according to their VGEF magnitudes to reduce contour artifacts in the enhanced image. Finally, we obtain output pixel values using the transformation function that equalizes the sorted histogram. Experimental results demonstrate that the proposed algorithm effectively enhances the contrast of dark images, and is applicable to the performance improvement of the saliency detection as well.

Original languageEnglish
Title of host publication2014 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Print)9786163618238
DOIs
Publication statusPublished - 2014 Feb 12
Event2014 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA 2014 - Chiang Mai, Thailand
Duration: 2014 Dec 92014 Dec 12

Other

Other2014 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA 2014
CountryThailand
CityChiang Mai
Period14/12/914/12/12

Fingerprint

Pixels
Electrostatic force

ASJC Scopus subject areas

  • Signal Processing
  • Information Systems

Cite this

Kim, Y., Kim, J. H., & Kim, C-S. (2014). VGEF: Contrast enhancement of dark images using value gap expansion force and sorted histogram equalization. In 2014 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA 2014 [7041718] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/APSIPA.2014.7041718

VGEF : Contrast enhancement of dark images using value gap expansion force and sorted histogram equalization. / Kim, Youngbae; Kim, Jin Hwan; Kim, Chang-Su.

2014 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA 2014. Institute of Electrical and Electronics Engineers Inc., 2014. 7041718.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Kim, Y, Kim, JH & Kim, C-S 2014, VGEF: Contrast enhancement of dark images using value gap expansion force and sorted histogram equalization. in 2014 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA 2014., 7041718, Institute of Electrical and Electronics Engineers Inc., 2014 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA 2014, Chiang Mai, Thailand, 14/12/9. https://doi.org/10.1109/APSIPA.2014.7041718
Kim Y, Kim JH, Kim C-S. VGEF: Contrast enhancement of dark images using value gap expansion force and sorted histogram equalization. In 2014 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA 2014. Institute of Electrical and Electronics Engineers Inc. 2014. 7041718 https://doi.org/10.1109/APSIPA.2014.7041718
Kim, Youngbae ; Kim, Jin Hwan ; Kim, Chang-Su. / VGEF : Contrast enhancement of dark images using value gap expansion force and sorted histogram equalization. 2014 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA 2014. Institute of Electrical and Electronics Engineers Inc., 2014.
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