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Projector and trapezoidal distortion correcting method

A technology of trapezoidal distortion and projectors, applied in television, optics, instruments, etc., can solve problems such as user confusion and achieve the effect of easy trapezoidal distortion correction

Active Publication Date: 2013-06-05
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, since the above method is a method of pressing the same operation button but performing keystone correction in a different manner, there is a case where the user may be confused

Method used

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  • Projector and trapezoidal distortion correcting method
  • Projector and trapezoidal distortion correcting method
  • Projector and trapezoidal distortion correcting method

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no. 1 Embodiment

[0031] figure 1 (A) is a diagram showing the image projection state of the first embodiment. also, figure 1 (B) is a perspective view showing the projector of the first embodiment. The projector 100 has a function of projecting an image 20 onto the screen 10 having a projection target area, and capturing an imaging range 30 including the image 20 projected on the screen 10 using the imaging unit 130 .

[0032] When setting up the portable projector 100, the user presses a predetermined button provided on the operation unit 150 of the main body of the projector 100 or a predetermined button provided on the remote controller for instructing the projector 100 to perform automatic keystone distortion. correction, followed by manual keystone correction. In this embodiment, the predetermined button for performing such an instruction is referred to as a correction button.

[0033] Next, functional blocks of the projector 100 having such functions will be described. figure 2 It ...

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Abstract

A projector includes: a storing unit that stores setting data indicating a manual trapezoidal distortion correction system selected out of plural kinds of manual trapezoidal distortion correction systems; an operation unit that generates operation information; an imaging unit that picks up an image of a projection target area and generates a pickup image; an automatic trapezoidal distortion correction unit that performs automatic trapezoidal distortion correction; a projecting unit that projects, after the automatic trapezoidal distortion correction is performed, irrespectively of the manual trapezoidal distortion correction system indicated by the setting data, an adjustment instruction image for urging adjustment of a vertex position of a display planned area of the image in the projection target area; and a manual trapezoidal distortion correction unit that performs manual trapezoidal distortion correction on the basis of operation information indicating an adjustment instruction for the vertex position.

Description

technical field [0001] The invention relates to a projector and a method for correcting keystone distortion. Background technique [0002] As a method of performing keystone distortion correction (also called keystone correction) by a projector, it is proposed that a user specifies a desired vertex among 4 vertices of an image and adjusts the position of the vertex as described in JP-A-2005-286572 As described in JP-A-2006-60447, the screen frame in the captured image is detected and adjusted according to the frame, and the trapezoidal distortion is adjusted by pressing the up, down, left, and right buttons of the projector body. [0003] For example, there has been proposed a projector in which, when the detection of the screen frame is successful, the user presses the up, down, left, and right buttons on the main body of the projector to designate four corners of the image after automatic keystone correction corresponding to the frame. Manual keystone correction is perfor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/74G03B21/00
CPCG03B21/14H04N9/3185H04N9/317H04N9/3194
Inventor 奈良浩
Owner SEIKO EPSON CORP
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