A Study on Displaying High Dynamic Range Images Considering Human Visual Perception

広島大学(Hiroshima University)博士(工学)Engineeringdoctora

Fast Local Tone Mapping, Summed-Area Tables and Mesopic Vision Simulation

広島大学(Hiroshima University)博士(工学)Engineeringdoctora

Generalization of pixel-wise phase estimation by CNN and improvement of phase-unwrapping by MRF optimization for one-shot 3D scan

Active stereo technique using single pattern projection, a.k.a. one-shot 3D scan, have drawn a wide attention from industry, medical purposes, etc. One severe drawback of one-shot 3D scan is sparse reconstruction. In addition, since spatial pattern becomes complicated for the purpose of efficient embedding, it is easily affected by noise, which results in unstable decoding. To solve the problems, we propose a pixel-wise interpolation technique for one-shot scan, which is applicable to any types of static pattern if the pattern is regular and periodic. This is achieved by U-net which is pre-trained by CG with efficient data augmentation algorithm. In the paper, to further overcome the decoding instability, we propose a robust correspondence finding algorithm based on Markov random field (MRF) optimization. We also propose a shape refinement algorithm based on b-spline and Gaussian kernel interpolation using explicitly detected laser curves. Experiments are conducted to show the effectiveness of the proposed method using real data with strong noises and textures.Comment: MVA202

薄明視における人間の視覚特性を考慮したトーンリプロダクション手法

画像電子学会第243回研究会 発表スライド ; 開催場所 : 鹿児島大学, 鹿児島市 ; 開催日 : 2009年3月5-6日画像電子学会 第243回研究会講演予稿, 08-05-27, pp.155-161に記載