A Novel Imaging Method for Cell Phone Camera in Low Ambient Light Conditions Using Flash and No-Flash Image Pairs
- Title
- A Novel Imaging Method for Cell Phone Camera in Low Ambient Light Conditions Using Flash and No-Flash Image Pairs
- Author
- 정정화
- Keywords
- imaging method; cell phone camera; low ambient light; flash and no-flash image pairs
- Issue Date
- 2013-04
- Publisher
- IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG
- Citation
- IEICE TRANSACTIONS ON INFORMATION AND SYSTEMS, April 2013, E96D(4), P.957-962
- Abstract
- In lowlight conditions, images taken by phone cameras usually have too much noise, while images taken using a flash have a high signal-noise ratio (SNR) and look unnatural. This paper proposes a novel imaging method using flash/no-flash image pairs. Through transferring the natural tone of the former to the latter, the resulting image has a high SNR and maintains a natural appearance. For realtime implementation, we use two preview images, which are taken with and without flash, to estimate the transformation function in advance. Then we use this function to adjust the tone of the image captured with flash in real time. Thus, the method does not require a frame memory and it is suitable for cell phone cameras.
- URI
- http://www.jstage.jst.go.jp/article/transinf/E96.D/4/E96.D_957/_articlehttp://hdl.handle.net/20.500.11754/44222
- ISSN
- 0916-8532
- DOI
- 10.1587/transinf.E96.D.957
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > ELECTRONIC ENGINEERING(융합전자공학부) > Articles
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