Flickering Effect Reduction Based on the Modified Transformation Function for Video Contrast Enhancement | Zendy

Hyeonseok Yang | Zendy; Jinwook Park | Zendy; Youngshik Moon | Zendy

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Flickering Effect Reduction Based on the Modified Transformation Function for Video Contrast Enhancement

Author(s) -

Hyeonseok Yang,

Jinwook Park,

Youngshik Moon

Publication year - 2014

Publication title -

ieie transactions on smart processing and computing

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.182

H-Index - 5

ISSN - 2287-5255

DOI - 10.5573/ieiespc.2014.3.6.358

Subject(s) - transformation (genetics) , flicker , contrast (vision) , histogram , computer science , artificial intelligence , pattern recognition (psychology) , contrast enhancement , reduction (mathematics) , computer vision , mathematics , image (mathematics) , computer graphics (images) , medicine , biochemistry , chemistry , geometry , radiology , magnetic resonance imaging , gene

This paper proposes a method that reduces the flickering effect caused by A-GLG (Adaptive Gray-Level Grouping) during video contrast enhancement. Of the GLG series, A-GLG shows the best contrast enhancement performance. The GLG series is based on histogram grouping. Histogram grouping is calculated differently between the continuous frames with a similar histogram and causes a subtle change in the transformation function. This is the reason for flickering effect when the video contrast is enhanced by A-GLG. To reduce the flickering effect caused by A-GLG, the proposed method calculates a modified transformation function. The modified transformation function is calculated using a previous and current transformation function applied with a weight separately. The proposed method was compared with A-GLG for flickering effect reduction and video contrast enhancement. Through the experimental results, the proposed method showed not only a reduced flickering effect, but also video contrast enhancement.

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