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Hardware Design of Vector Code Correlation Method for High-Speed Template Matching
Masaki Yoshimura,Hideki Kawai,Taketoshi Iyota,Yongwoon Choi 제어로봇시스템학회 2008 제어로봇시스템학회 국제학술대회 논문집 Vol.2008 No.10
Template matching has been applied to the image processing of the fields such as security and robot vision to recognize a target from images. The method used in those fields requires the high-speed processing and robustness to illumination change or occlusion. To accommodate this, we employ a method, named the vector code correlation (VCC) that codes the gradient of intensity change, but the method on software is not enough in aspect of image processing time. Therefore, the purpose of this study is to achieve the template matching in real-time by designing hardware to implement the VCC method at high speed. The hardware design consists of five modules doing pipeline processing and is able to realize in relatively small scale. In the present paper, experimental results of 60 fps obtained with the designed hardware and its configuration are shown.
Tetsuo Harada,Shiho Takenaka,Kohki Iyota,Takashi Shiraki,Masatoshi Moku,Chihiro Katagiri,Vladimír Koštál 한국응용곤충학회 2013 Journal of Asia-Pacific Entomology Vol.16 No.3
The only insects known to live in the open ocean are several species of sea skaters of the genus Halobates (Heteroptera: Gerridae). We have collected four species in the tropical western Pacific Ocean and measured heat coma temperature (HCT) and supercooling point (SCP) in 132 specimens. The SCPs were relatively low (ranging between −18 °C and −19 °C) and similar in all species. Significant inter-species differences were found in the level of HCT. The lowest HCT 32.9 °C was found in Halobates micans Eschscholtz, 1822, which is distributed in thermally stable tropical waters. The highest HCT levels of 36.6 °C and 36.0 °C were observed in Halobates sericeus Eschscholtz and Halobates germanus White, 1883, respectively, mostly occurring in thermallymore fluctuating habitats (subtropical and warm temperate waters, and coastal waters, respectively). A new species, H. sp. (under process of description) showed an intermediate HCT of 34.8 °C. In addition, we found significant negative statistical correlation between HCT and SCP values at the species and individual levels. We discuss our results in the light of putative relationship between thermal physiology of sea skaters and their distribution.