IMAGE CODING METHOD, IMAGE DECODING METHOD, IMAGE CODING DEVICE, IMAGE DECODING DEVICE, IMAGE CODING PROGRAM, AND IMAGE DECODING PROGRAM

Title:

IMAGE CODING METHOD, IMAGE DECODING METHOD, IMAGE CODING DEVICE, IMAGE DECODING DEVICE, IMAGE CODING PROGRAM, AND IMAGE DECODING PROGRAM

Document Type and Number:

WIPO Patent Application WO/2013/018806

Kind Code:

A1

Abstract:

An objective of the present invention is to reduce coding computation volume and decoding computation volume while alleviating coding efficiency degradation, beyond conventional intra-segmented image coding. A segmented image generation unit segments an inputted image to be coded into blocks of the same size, and gathers pixels of the same relative location within each block, generating segmented images which are respectively of the same size. An intra-segmented image coding unit carries out segmented image coding for some segmented images. To code other segmented images, a reference image selection unit selects a coded segmented image with a close pixel location in a source image as a reference image. A segmented image inter-predict coding unit generates a predict image using the selected reference image, and codes the segmented image to be coded by segmented image inter-predict with a segmented image as a unit.

Inventors:

WATANABE MAYUKO (JP)
KITAHARA MASAKI (JP)
SHIMIZU ATSUSHI (JP)

Application Number:

PCT/JP2012/069495

Publication Date:

February 07, 2013

Filing Date:

July 31, 2012

Export Citation:

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Assignee:

NIPPON TELEGRAPH & TELEPHONE (JP)
WATANABE MAYUKO (JP)
KITAHARA MASAKI (JP)
SHIMIZU ATSUSHI (JP)

International Classes:

H04N19/105; H04N19/117; H04N19/136; H04N19/146; H04N19/147; H04N19/154; H04N19/157; H04N19/19; H04N19/196; H04N19/50; H04N19/503; H04N19/59; H04N19/593; H04N19/80

Foreign References:

JP2009077176A	2009-04-09
JP2009130467A	2009-06-11
JP2006080933A	2006-03-23
JP2009296300A	2009-12-17

Other References: