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1. (WO2018143278) IMAGE PROCESSING DEVICE, IMAGE RECOGNITION DEVICE, IMAGE PROCESSING PROGRAM, AND IMAGE RECOGNITION PROGRAM

Pub. No.:    WO/2018/143278    International Application No.:    PCT/JP2018/003225
Publication Date: Fri Aug 10 01:59:59 CEST 2018 International Filing Date: Thu Feb 01 00:59:59 CET 2018
IPC: G06T 7/00
Applicants: EQUOS RESEARCH CO., LTD.
株式会社エクォス・リサーチ
KYUSHU INSTITUTE OF TECHNOLOGY
国立大学法人九州工業大学
Inventors: YAMADA Hideo
山田 英夫
KUNO Kazuhiro
久野 和宏
SHIBATA Masatoshi
柴田 雅聡
ENOKIDA Shuichi
榎田 修一
OHTSUKA Hiromichi
大塚 広道
Title: IMAGE PROCESSING DEVICE, IMAGE RECOGNITION DEVICE, IMAGE PROCESSING PROGRAM, AND IMAGE RECOGNITION PROGRAM
Abstract:
The present invention reduces calculation costs while raising detection accuracy. An image processing device 8 has a function for plotting a luminance gradient co-occurrence pair of an image on a feature plane 15 and applying an EM algorithm thereto to form a GMM. The image processing device 8 learns a pedestrian image and creates a GMM of the pedestrian image, subsequently learns a background image and creates a GMM of the background image, and furthermore calculates a difference between the two and generates a GMM for relearning based on the calculation. The image processing device 8 plots a sample that conforms to the GMM for relearning on the feature plane 15 by applying an inverse function theorem. The image processing device 8 finally forms a GMM that represents the distribution of samples at a designated mixed number and thereby forms a standard GMM that serves as a standard for image recognition. When this mixed number is set to less than a mixed number designated earlier, the dimensions with which an image is analyzed are reduced, making it possible to reduce calculation costs.