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首页> 外文期刊>IEICE Transactions on Information and Systems >A Novel Imaging Method for Cell Phone Camera in Low Ambient Light Conditions Using Flash and No-Flash Image Pairs
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A Novel Imaging Method for Cell Phone Camera in Low Ambient Light Conditions Using Flash and No-Flash Image Pairs

机译：使用闪光灯和非闪光灯图像对的低环境光条件下手机相机的新型成像方法

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摘要

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 flasho-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.
机译：在弱光条件下，电话摄像头拍摄的图像通常会有太多的噪点，而使用闪光灯拍摄的图像则具有很高的信噪比（SNR），看起来不自然。本文提出了一种使用闪光/不闪光图像对的新颖成像方法。通过将前者的自然色调转移到后者，所得图像具有很高的SNR，并保持了自然外观。对于实时实现，我们使用两张预览图像（分别带有和不带有闪光灯）拍摄，以预先估计转换函数。然后，我们使用此功能实时调整用闪光灯拍摄的图像的色调。因此，该方法不需要帧存储器，并且适合于手机相机。

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  • 来源
    《IEICE Transactions on Information and Systems》 |2013年第4期|957-962|共6页
  • 作者

    Lin-bo LUO; Jun CHEN; Sang-woo AN; Chang-shuai WANG; Jong-joo PARK; Ying-chun LI; Jong-wha CHONG;

  • 作者单位

    The author is with the Faculty of Mech. and Elect. Inf., China University of Geosciences, Wuhan, 430074 China,The authors are with the Dept. of Elect, and Comp. Eng., Hanyang University, 17 Haengdang-Dong, Seongdong-Gu, Seoul,180-8585 Korea.;

    The author is with Experimental Center of Inf. Tech., China University of Geosciences, Wuhan, 430074 China;

    The authors are with the Dept. of Elect, and Comp. Eng., Hanyang University, 17 Haengdang-Dong, Seongdong-Gu, Seoul,180-8585 Korea.;

    The authors are with the Dept. of Elect, and Comp. Eng., Hanyang University, 17 Haengdang-Dong, Seongdong-Gu, Seoul,180-8585 Korea.;

    The authors are with the Dept. of Elect, and Comp. Eng., Hanyang University, 17 Haengdang-Dong, Seongdong-Gu, Seoul,180-8585 Korea.;

    The authors are with the Dept. of Elect, and Comp. Eng., Hanyang University, 17 Haengdang-Dong, Seongdong-Gu, Seoul,180-8585 Korea.;

    The authors are with the Dept. of Elect, and Comp. Eng., Hanyang University, 17 Haengdang-Dong, Seongdong-Gu, Seoul,180-8585 Korea;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    imaging method; cell phone camera; low ambient light; flash and no-flash image pairs;

    机译：成像方法手机摄像头;低环境光;闪存和不闪存图像对;

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