Title:
INTERACTIVE PROJECTOR AND CORRECTION METHOD FOR Z COORDINATE OF THE SAME
Document Type and Number:
Japanese Patent JP2017033222
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To improve accuracy of contact detection of an indication body with respect to a screen surface.SOLUTION: An interactive projector comprises: a projection section projecting an image onto a screen surface; a detection section; and a correction section. The detection section detects presence or absence of contact of an indication body with the screen surface on the basis of a relation between a difference between a Z coordinate value of the indication body and a known Z coordinate value of the screen surface and a difference threshold value set beforehand. The correction section corrects at least one of the Z coordinate value of the screen surface, the Z coordinate value of the indication body and the difference threshold value on the basis of a history of the Z coordinate value of the indication body.SELECTED DRAWING: Figure 5
Inventors:
KUBOTA SHINJI
Application Number:
JP2015151578A
Publication Date:
February 09, 2017
Filing Date:
July 31, 2015
Export Citation:
Assignee:
SEIKO EPSON CORP
International Classes:
G06F3/041; G03B21/00; G06F3/042
Domestic Patent References:
| JP2014164372A | 2014-09-08 | |||
| JP2009251702A | 2009-10-29 | |||
| JP2010152579A | 2010-07-08 | |||
| JP2000231446A | 2000-08-22 | |||
| JP2012149987A | 2012-08-09 |
Foreign References:
| US20120133616A1 | 2012-05-31 |
Attorney, Agent or Firm:
Meisei International Patent Office