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Simulation scheme of dusk scene using piece-wise multiple regression based on time-series color-block images

机译：基于时序色块图像的分段多元回归黄昏场景仿真方案

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摘要

Dusk and dawn are usually the most beautiful moments of the day, and are almost always too short for busy people nowadays to witness their coming. In this work, an efficient strategy for simulating a dusk scene of an outdoor scene image taken at other times before the sunset is presented. The strategy is a hybrid approach combining the piece-wise multiple regression (PMR) of data, discrete cosine transformation (DCT), and a look-up table algorithm. The process begins using a series of color-block images taken in the afternoon of a day. The best fitting functions of PMR for these color block images exist on separate planes (red, green, and blue) in the DCT domain individually. The reference databases of the DCT coefficients varying with respect to time are then established according to the best fitting functions of PMR. Finally, the dusk scene of an outdoor scene taken in the afternoon is synthesized by querying the reference database. The experiment results show that the presented algorithm can precisely simulate the desired dusk scene from a scene image taken in the afternoon.
机译：黄昏和黎明通常是一天中最美丽的时刻，对于当今忙碌的人们来说，目睹他们的到来几乎总是太短暂了。在这项工作中，提出了一种有效的策略，用于模拟在日落之前的其他时间拍摄的室外场景图像的黄昏场景。该策略是一种混合方法，结合了数据的分段多重回归（PMR），离散余弦变换（DCT）和查找表算法。该过程开始使用一天下午拍摄的一系列色块图像。这些色块图像的PMR最佳拟合功能分别存在于DCT域中的单独平面（红色，绿色和蓝色）上。然后根据PMR的最佳拟合函数建立随时间变化的DCT系数的参考数据库。最后，通过查询参考数据库来合成下午拍摄的户外场景的黄昏场景。实验结果表明，该算法能够从下午拍摄的场景图像中准确模拟出理想的黄昏场景。

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  • 来源
    《Optical engineering》 |2010年第9期|p.097007.1-097007.14|共14页
  • 作者

    Chen-Chung Liu; Chih-Chao Yang;

  • 作者单位

    National Chin-Yi University of Technology Department of Electronic Engineering Number 35 Lane 215 Section 1 Chung-Shan Road Taiping Taichung, 411, Taiwan;

    National Chin-Yi University of Technology Department of Electronic Engineering Number 35 Lane 215 Section 1 Chung-Shan Road Taiping Taichung, 411, Taiwan;

  • 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

    dusk; discrete cosine transform; look-up table; regression;

    机译：黄昏;离散余弦变换查找表;回归;

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