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Reconstruction of shapes and appearances of thin film objects can be applied to many fields such as industrial inspection, biological analysis, and archaeologic research. However, it comes with many challenging issues because the appearances of thin film can change dramatically depending on view and light directions. The appearance is deeply dependent on not only the shapes but also the optical parameters...
Dataflow-based non-strict functional programming languages have attractive features for writing concise programs. In order to avoid performance penalties on non-dataflow stock machines, we speculatively use a stack frame instead of a heap frame for a fine grain function instance, which may require dynamic scheduling. As a static approach, we introduce a merging policy to a thread partitioning algorithm...
In computer graphics, there are several methods to render thin film interference effects, but it sets the parameters of interference manually. To reconstruct more accurate appearance of the thin film, we need to estimate the BRDF parameters of the thin film, the refractive index and film thickness. In this paper, we propose a novel method for estimating the BRDF of the thin film interference and representing...
The surface of most natural objects is composed of two or more layers whose optical properties jointly determine the surface's overall reflectance. Light transmission through these layers can be approximated by using the Lambert-Beer (LB) model, which provides a good trade-off between the accuracy and simplicity to handle layer decomposition. Recently, a layer decomposition based on the LB-based model...
Multispectral imaging has promising and wide application areas, including medical imaging, remote sensing, and cultural asset preservation. In particular, cultural assets are often damaged by microorganisms such as moss and mold. Thus, asset preservation requires measuring the kinds and extent of microorganisms by obtaining spectral information in wide areas. This process requires developing an efficient...
This paper proposes a novel method for color restoration that can effectively apply accurate color based on spectral information to a segmented image using the normalized cut technique. Using the proposed method, we can obtain a digital still camera image and spectral information in different environments. Also, it is not necessary to estimate reflectance spectra using a spectral database such as...
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