PROJECTION SYSTEM, IMAGE PROCESSING DEVICE, PROJECTION METHOD, AND PROGRAM

WIPO Patent Application WO/2017/122500

A1

Provided is a projection system (100) that uses one or more projection means (150) to project an image onto a projection body (102) curved along one direction, wherein the projection system (100) comprises: a lattice point extraction means (132) for extracting a set of lattice points representing the distortion of a projection image from each of a plurality of preprocessed captured images for calibration; a lattice point conversion means (134) for converting, into coordinates in a common coordinate system, each set of lattice points of the projection means of interest which is commonly extracted among a plurality of images in which calibration patterns projected onto the projection body in the plurality of captured images for calibration are captured in mutually different imaging ranges in relation to the above one direction; a lattice point synthesizing means (136) for synthesizing a plurality of sets of lattice points of the projection means of interest in the common coordinate system in accordance with the positions; and a correction coefficient calculation means (140) for calculating a correction coefficient on the basis of the synthesized set of lattice points.

JP6550885	Display device, display device control method, and program
JP5068395	Display screen data editing device
JPS5646293	DISPLAY CONTROL UNIT

ISHIKAWA MASAAKI (JP)
UCHIYAMA YUKINAKA (JP)

PCT/JP2016/087754

July 20, 2017

December 19, 2016

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RICOH CO LTD (JP)
ISHIKAWA MASAAKI (JP)
UCHIYAMA YUKINAKA (JP)

G09G5/00; G03B21/00; H04N5/74

JP2014171234A	2014-09-18
JP2007148416A	2007-06-14
JP2011180251A	2011-09-15
JP2015111214A	2015-06-18
JP2014192808A	2014-10-06

See also references of EP 3404648A4

ITOH, Tadashige et al. (JP)

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