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Projection display apparatus and image adjusting method

A technology of image display and projection, which is applied in projection devices, image communication, television, etc., can solve the problem of heavy processing load and achieve the effect of reducing processing load

Inactive Publication Date: 2012-08-22
SANYO ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, in the above technique, the processing load of image shape adjustment is heavy.

Method used

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  • Projection display apparatus and image adjusting method
  • Projection display apparatus and image adjusting method
  • Projection display apparatus and image adjusting method

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Experimental program
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no. 1 approach

[0044] (Outline of Projection Display Device)

[0045] Hereinafter, a projection-type video display device according to a first embodiment will be described with reference to the drawings. figure 1 It is a schematic diagram showing the projection display device 100 of the first embodiment.

[0046] Such as figure 1 As shown, the projection display device 100 is provided with an imaging element 300 . In addition, the projection display device 100 projects image light onto the projection surface 400 .

[0047] The image sensor 300 is configured to image the projection surface 400 . That is, the imaging element 300 is configured to detect reflected light of the image light projected onto the projection surface 400 by the projection display device 100 . The imaging device 300 outputs a captured image along a predetermined line with respect to the projection display device 100 . The imaging device 300 may be incorporated in the projection-type video display device 100 , or may...

change example 1

[0154] Hereinafter, Modification 1 of the first embodiment will be described. Hereinafter, differences from the first embodiment will be mainly described.

[0155] Specifically, in Modification 1, the element control unit 250 controls the liquid crystal panel 50 to display an image for coordinate mapping in which a plurality of feature points are discretely arranged for mapping the projection-type video display device 100 . coordinates and the coordinates of the imaging device 300 .

[0156] For example, it should be noted that in order to provide an interactive function, it is necessary to map the coordinates of the projection display device 100 and the coordinates of the imaging device 300 . It should also be noted that when the projection surface 400 is a curved surface, it is necessary to arrange a plurality of feature points discretely in the image for coordinate mapping.

[0157] It should be noted that a plurality of feature points may be discretely arranged in a regi...

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Abstract

The present invention provides a projection display apparatus and an image adjusting method, which can reduce processing load for adjusting the shape of an image. The projection display apparatus (100) displays a test pattern image including three or more intersections configured by three or more line segments. The projection display apparatus calculates a positional relationship between the projection display apparatus and the projection plane (400) based on the three or more intersections included in the test pattern image. The test pattern image is included within a display frame (420).

Description

technical field [0001] The present invention relates to a projection type image display device having a light modulation element configured to modulate light emitted from a light source and a projection unit configured to project light emitted from the light modulation element onto a projection surface, and Image adjustment method. Background technique [0002] Conventionally, a projection type video display device including a light modulation element for modulating light emitted from a light source and a projection unit for projecting the light emitted from the light modulation element onto a projection surface is known. [0003] Here, due to the positional relationship between the projection-type image display device and the projection surface, the shape of the image projected on the projection surface becomes distorted. [0004] On the other hand, there is proposed a method of adjusting the shape of a map in the following order (for example, Patent Document 1). First, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/74G03B21/00
CPCG03B21/147H04N9/3185H04N9/3194
Inventor 原口昌弘平沼义直井上益孝
Owner SANYO ELECTRIC CO LTD