Video recording in high dynamic range scenes

Wen-Chung Kao, Chih Hsiang Huang, Guan Fan Wu, Chung-Yen Su, Pei Yung Hsiao

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

1 Citation (Scopus)

Abstract

Recording video in high dynamic range (HDR) scenes usually suffers from the trouble of getting poor contrast videos. In this paper, an integrated signal processing system, which remaps the image to enhance video visibility, is presented. The system extracts pixel local contrasts and nonlinearly stretches the dynamic range of pixel contrast values through histogram equalization. Undesired artifacts in the contrast map are then smoothed by a similar filter, which averages the pixel luminance values only when colors of neighboring pixels are similar to the central one. The luminance value for a pixel is then replaced by the geometric mean of its original value and smoothed contrast value. Finally, the photographic tone reproduction algorithm normalizes pixel values such that the average of log luminance values in the entire video frame is around 18% gray tone. The proposed approach shows better performance in both tone and color reproduction compared with other popular approaches.

Original languageEnglish
Title of host publication1st International Conference on Green Circuits and Systems, ICGCS 2010
Pages683-686
Number of pages4
DOIs
Publication statusPublished - 2010 Sep 20
Event1st International Conference on Green Circuits and Systems, ICGCS 2010 - Shanghai, China
Duration: 2010 Jun 212010 Jun 23

Other

Other1st International Conference on Green Circuits and Systems, ICGCS 2010
CountryChina
CityShanghai
Period10/6/2110/6/23

    Fingerprint

ASJC Scopus subject areas

  • Hardware and Architecture
  • Electrical and Electronic Engineering

Cite this

Kao, W-C., Huang, C. H., Wu, G. F., Su, C-Y., & Hsiao, P. Y. (2010). Video recording in high dynamic range scenes. In 1st International Conference on Green Circuits and Systems, ICGCS 2010 (pp. 683-686). [5542976] https://doi.org/10.1109/ICGCS.2010.5542976