arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1712.04541eess.IVeess.SP
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计算成像中孔径设计的分析与优化

Analysis and Optimization of Aperture Design in Computational Imaging

Adam Yedidia, Christos Thrampoulidis, Gregory Wornell

摘要:

对于将编码孔径成像系统用于各种应用的兴趣日益增长。使用基于互信息的分析框架,我们检查这样的系统的基本限制-和相关的最佳孔径编码-在简单但有意义的传播和传感器模型。在其他结果中,我们表明,当热噪声占主导地位,频谱平坦的面具,其中有50%的transspeed,是最佳的,但当散粒噪声占主导地位,随机生成的面具,较低的transspeed提供更大的性能。我们还提供了与经典针孔相机的比较。

英文摘要:

There is growing interest in the use of coded aperture imaging systems for a variety of applications. Using an analysis framework based on mutual information, we examine the fundamental limits of such systems---and the associated optimum aperture coding---under simple but meaningful propagation and sensor models. Among other results, we show that when thermal noise dominates, spectrally-flat masks, which have 50% transmissivity, are optimal, but that when shot noise dominates, randomly generated masks with lower transmissivity offer greater performance. We also provide comparisons to classical pinhole cameras.

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