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Pinhole-array-based hand-held light field cameras can be used to capture 4-dimensional light field data for different applications such as digital refocusing and depth estimation. Our previous experiences suggest the design of the pinhole array mask is very critical to the performance of the camera, and the selection of mask parameters could be very different between applications. In this paper, we...
Through-silicon via (TSV) based 3-D ICs provide a promising solution for miniaturizing chips. However, thermal issue in 3-D ICs cannot be ignored. In this paper, we proposed a method based on 3-D transmission line matrix (3-D TLM) method to calculate heat generation in the lossy silicon substrate caused by TSV induced electrical field. Pseudo random bit sequences (PRBS) at different bit rates are...
Depth estimation is one of the new functions provided by hand-held light field cameras. However, the quality of depth estimation is very sensitive to noise, which is especially a problem for scenes under low light conditions. In this paper, we propose a depth estimation flow for light field data, which can be fully-automated and no noise characteristics are required a priori. The results of Root Mean...
In this paper, depth estimation of light field data obtained from the pinhole-masked camera system is proposed. In the first approach, the sharpness of objects in the refocused images is evaluated using the FFT method, from which an empirical formula can be obtained to estimate the depth of objects. The second method uses the raw data in sub-images to calculate an index, Average Absolute Difference...
In this paper, a computational photography system is utilized to sample 4D light fields. The system is implemented using a normal DSLR camera with a mask printed using Kodak LVT technique. We reconfigure the camera by inserting a pinhole array mask in front of the sensors. The mask blocks part of light and samples the rest that passes through the pinholes. With these 4D light field data, the refocused...
We realize a new scheme for making a direct contact to a two-dimensional (2D) nanorod LED array using the oblique-angle deposition. More importantly, we demonstrate highly efficient carrier injection into the nanorods.
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