A thin and compact compound-eye imaging system incorporated with an image restoration considering color shift, brightness variation, and defocus
A thin and compact compound-eye imaging system incorporated with an image restoration considering color shift, brightness variation, and defocus
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DOI：
10.1007/s10043-009-0045-0
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发表时间：
2009-06
期刊：
影响因子：
1.2
通讯作者：
R. Horisaki;Y. Nakao;T. Toyoda;K. Kagawa;Y. Masaki;J. Tanida
中科院分区：
文献类型：
--
作者：
R. Horisaki;Y. Nakao;T. Toyoda;K. Kagawa;Y. Masaki;J. Tanida
构建了一个基于复眼成像的薄观测模块（TOMBO）成像器的紧凑系统，以展示其相对于单眼成像系统的优势，如更薄的硬件。为了从复眼光学系统捕获的低分辨率图像重建高分辨率图像，我们提出了一种基于迭代反投影算法的图像恢复方案，该算法利用捕获图像上的视差估计深度图。该方案包括抑制由商用图像传感器上的偏移微透镜和滤色器引起的逐单元颜色偏移，以及使用深度图通过几何光学对散焦进行去模糊。在实验中，三维物体被捕获的TOMBO成像仪和重建的方案。处理后，所捕获图像的功率谱最多改善了19 dB，而色偏效应的功率谱降低了7 dB。
A compact system of the thin observation module by bound optics (TOMBO) imager based on compound-eye imaging has been constructed to demonstrate its advantages over single-eye imaging systems such as thinner hardware. To reconstruct a high-resolution image from low resolution images captured by the compound-eye optics, we propose an image restoration scheme based on the iterative back-projection algorithm with depth map estimated from the disparities on the captured image. The scheme includes suppression of unit-by-unit color shift caused by the offset microlenses and the color filters on the commercial image sensors and deblurring of defocus by geometrical optics using the depth map. In the experiment, three-dimensional objects were captured by the TOMBO imager and reconstructed with the scheme. After the processing, the power spectrum of the captured image was improved by up to 19 dB, and the power spectrum of the effect of the color shift was reduced by 7 dB.