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Projection image position adjustment method

A technique for projecting images and adjusting methods, which is applied to measuring devices, projection devices, optical devices, etc., and can solve the problems of inability to obtain the boundary position with high precision, impossible position, and large amount of computation.

Inactive Publication Date: 2009-06-10
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, complex image analysis processing is required to obtain the positional shift
Therefore, an image data processing device with high processing capability is required, and there is a problem that rapid positional offset adjustment cannot be performed due to a large amount of computation.
[0011] In addition, the technology disclosed in Patent Document 2 has a problem that the boundary position cannot be obtained with high accuracy unless a high-resolution imaging device having a resolution of the pixel unit of the projected image is used.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0063] figure 1 It is a diagram showing the configuration of a multi-projection display to which the method for adjusting the position of a projected image according to Embodiment 1 is applied. To make the explanation easy to understand, assume that figure 1 The multi-projection display shown has two left and right projectors PJ1 and PJ2 parallel in the horizontal direction. Some have overlapping areas. in addition, figure 1 It is the figure which looked at screen SCR and projector PJ1, PJ2 from above.

[0064] figure 1 The illustrated multi-projection display includes two projectors PJ1, PJ2, and a projected image position adjustment device 1 having a function of adjusting the position of projected images from the two projectors PJ1, PJ2.

[0065] In addition, the projectors PJ1 and PJ2 can move the display position of the projected image on the screen SCR in the horizontal / vertical direction in units of one pixel within the screen SCR by an external operation. And, whe...

Embodiment approach 2

[0115] In the projected image position adjustment method according to the first embodiment, the case where the position adjustment in the vertical direction (vertical direction) of the projected images from the two projectors PJ1 and PJ2 arranged in parallel in the horizontal direction is performed is described. In the method for adjusting the position of a projected image according to the second aspect, the position adjustment in the horizontal direction (left-right direction) of each projected image from two projectors PJ1 and PJ2 arranged in parallel in the horizontal direction will be described.

[0116] Figure 9 It is a schematic diagram which shows an example of the adjustment images CG3 and CG4 which are respectively projected on the screen SCR from two projectors PJ1 and PJ2 arranged in parallel in the horizontal direction. As an image for adjustment at this time, use Figure 9 Adjustment images CG3 and CG4 shown in (a) and (b).

[0117] The adjustment image data CG...

Embodiment approach 3

[0129] In the method of adjusting the position of a projected image according to Embodiment 1 and Embodiment 2, it has been described that the vertical direction (vertical direction) and the horizontal direction (left and right direction) of each projected image from two projectors PJ1 and PJ2 arranged side by side in the horizontal direction are adjusted. direction), it is also possible to adjust the horizontal direction of each projected image from the two projectors PJ1 and PJ2 juxtaposed in the vertical direction using the adjustment images CG3 and CG4 used in the description of Embodiment 2. position adjustment.

[0130] Hereinafter, position adjustment in the horizontal direction of each projected image from the two projectors PJ1 and PJ2 arranged in the vertical direction using the adjustment images CG3 and CG4 will be described.

[0131] A multi-projection display to which the method for adjusting the position of projected images according to the third embodiment is ap...

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Abstract

To provide a method capable of executing position adjustment of projected images from a plurality of projectors and projected on a projection screen at a high speed, with less computation complexities, and high accuracy. The multi-projection display apparatus, capable of projecting projected images from the projectors onto the projection screen in a way of including a superimposing area includes an adjustment image data output device 12 that can output two adjustment image data with a pattern that the predetermined characteristics appear in their superposing area to two projectors PJ1, PJ2, when the two adjustment image data are projected from the two projectors among the projectors are projected at an appropriate positional relation; an evaluation value calculation device 13 that calculates the evaluation value associated with the characteristics, on the basis of imaged image data obtained by imaging the projected screen, when the two projectors project the two adjustment image data; and a position adjustment control device 14 that adjusts the position of the two projection images, on the basis of the evaluation value.

Description

technical field [0001] The present invention relates to a method for adjusting the position of projected images, a device for adjusting the position of projected images, a program for adjusting the position of projected images, and multiple Projection display. Background technique [0002] A multi-projection display is known in which projected images from a plurality of projectors are projected in a tiled manner or overlapped on a projection surface. In such a multi-projection display, the accuracy of positional adjustment of each projected image on a projection surface greatly affects the quality of projected images. [0003] For example, in the case of tiled projection, if the accuracy of position adjustment is low, discontinuous joints may occur between projected images, overlapping areas may appear blurred, and the quality of projected images may deteriorate significantly. [0004] In order to deal with this problem, in a multi-projection display, it is necessary to pe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/20G01B11/00G03B21/00
Inventor 斋藤敏树长谷川浩
Owner SEIKO EPSON CORP