POSITION DETECTION DEVICE, POSITION DETECTION SYSTEM, AND POSITION DETECTION METHOD

Title:

POSITION DETECTION DEVICE, POSITION DETECTION SYSTEM, AND POSITION DETECTION METHOD

Document Type and Number:

WIPO Patent Application WO/2015/111402

Kind Code:

A1

Abstract:

　The present invention enables the indicated position of an indicator on an operation plane to be more accurately detected using a captured image. A projector (10) is provided with an image-capturing unit (51) for capturing an image of a screen (SC) and a position detection unit for detecting the indicated position of an indicator (80) on the basis of the captured image captured by the image-capturing unit (51). The position detection unit detects, from the captured image captured by the image-capturing unit (51), the reflected light of detection light (LC) reflected by the indicator (80), and determines the indicated position of the indicator (80) on the basis of the position (80a) of the reflected light detected from the captured image and the distance (L) from the screen (SC) to the image-capturing unit (51).

Inventors:

NGUYEN HIEU (NO)
NJOLSTAD TORMOD (NO)
MOUSSAKHANI BABAK (NO)
PAWLAK KAROL MARCIN (NO)
TANAKA KENJI (NO)
KUBOTA SHINJI (JP)

Application Number:

PCT/JP2015/000238

Publication Date:

July 30, 2015

Filing Date:

January 20, 2015

Export Citation:

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Assignee:

SEIKO EPSON CORP (JP)

International Classes:

G06F3/042; G06F3/041

Domestic Patent References:

WO2012070950A1	2012-05-31
WO2012124730A1	2012-09-20

Foreign References:

JP2011253255A	2011-12-15
JP2011227600A	2011-11-10

Other References: