IMAGE INFORMATION EXTRACTION APPARATUS, IMAGE TRANSMISSION APPARATUS USING THE SAME, IMAGE RECEIVING APPARATUS, AND IMAGE TRANSMISSION SYSTEM

Title:

IMAGE INFORMATION EXTRACTION APPARATUS, IMAGE TRANSMISSION APPARATUS USING THE SAME, IMAGE RECEIVING APPARATUS, AND IMAGE TRANSMISSION SYSTEM

Document Type and Number:

Japanese Patent JP2013070129

Kind Code:

A

Abstract:

To provide an image information extraction apparatus which extracts an image of an object by inexpensive and accurate removal of a background.

A CPU 14 calculates the luminance gradient of a reference image stored in a memory 13 and an input image inputted thereafter from a camera 11 by spatial differential of image information on the reference image and that of the input image. The CPU 14 divides the reference image and the input image into small regions larger than pixels constituting the reference image and the input image and calculates the histogram of the luminance gradient of each small region. The CPU 14 calculates difference information on the basis of the similarity between the histogram of the reference image and that of the input image and extracts the image.

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Inventors:

ONISHI KATSUNORI
KYOMEN HIROSHI

Application Number:

JP2011205530A

Publication Date:

April 18, 2013

Filing Date:

September 21, 2011

Export Citation:

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Assignee:

PANASONIC CORP

International Classes:

H04N7/18

Domestic Patent References:

JP2004348425A	2004-12-09
JP2011096081A	2011-05-12
JPH05288534A	1993-11-02
JP2010165183A	2010-07-29
JP2005078375A	2005-03-24

Attorney, Agent or Firm:

Yasuo Itaya
Katsumi Taguchi
Shinichi Mizuta

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