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Patent Searching and Data


Title:
IMAGE PROCESSING DEVICE, IMAGE RECOGNITION DEVICE, IMAGE PROCESSING PROGRAM, AND IMAGE RECOGNITION PROGRAM
Document Type and Number:
WIPO Patent Application WO/2018/143278
Kind Code:
A1
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.

Inventors:
YAMADA Hideo (Akihabara Daibiru 7F, 18-13, Sotokanda 1-chome, Chiyoda-k, Tokyo 21, 〒1010021, JP)
KUNO Kazuhiro (Akihabara Daibiru 7F, 18-13, Sotokanda 1-chome, Chiyoda-k, Tokyo 21, 〒1010021, JP)
SHIBATA Masatoshi (Akihabara Daibiru 7F, 18-13, Sotokanda 1-chome, Chiyoda-k, Tokyo 21, 〒1010021, JP)
ENOKIDA Shuichi (DEPARTMENT OF ARTIFICIAL INTELLIGENCE KYUSHU INSTITUTE OF TECHNOLOGY, 680-4, Kawazu, Iizuka-sh, Fukuoka 02, 〒8208502, JP)
OHTSUKA Hiromichi (DEPARTMENT OF ARTIFICIAL INTELLIGENCE KYUSHU INSTITUTE OF TECHNOLOGY, 680-4, Kawazu, Iizuka-sh, Fukuoka 02, 〒8208502, JP)
Application Number:
JP2018/003225
Publication Date:
August 09, 2018
Filing Date:
January 31, 2018
Export Citation:
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Assignee:
EQUOS RESEARCH CO., LTD. (Akihabara Daibiru 7F, 18-13 Sotokanda 1-chome, Chiyoda-k, Tokyo 21, 〒1010021, JP)
KYUSHU INSTITUTE OF TECHNOLOGY (1-1 Sensui-cho, Tobata-ku Kitakyushu-sh, Fukuoka 50, 〒8048550, JP)
International Classes:
G06T7/00
Foreign References:
JP2009301104A2009-12-24
JP2008257649A2008-10-23
Other References:
IWATA, SOHEI ET AL.: "Pedestrian detection based on co-occurrence of gradient directions extracted with different filter sizes, Digest Collection of the 21st Symposium on Sensing via Image Information", SSII2015 THE 21ST SYMPOSIUM ON SENSING VIA IMAGE INFORMATION; 10-12/06/2015; YOKOHAMA, JAPAN, June 2015 (2015-06-01), pages IS3-21-1 - IS3-21-7, XP009515614
IWATA, SOHEI ET AL.: "Object detection based on multiple resolution CoHOG", THE JOURNAL OF THE INSTITUTE OF IMAGE ELECTRONICS ENGINEERS OF JAPAN : VISUAL COMPUTING, DEVICES & COMMUNICATIONS, vol. 45, no. 1, 30 January 2016 (2016-01-30), pages 42 - 52, XP009515610, ISSN: 2186-716X
Attorney, Agent or Firm:
NAKANO Hitoshi et al. (B1 Umeya Bldg, 12-8 Nishishinjuku 8-chome, Shinjuku-k, Tokyo 23, 〒1600023, JP)
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