Projector and image calibration method for same

A technology of a projection device and a calibration method, which is applied to the image reproducer of the projection device, image communication, television, etc., can solve problems such as calibration of keystone distortion, and achieve the purpose of reducing errors and troubles, reducing time, and improving convenience. Effect

Active Publication Date: 2013-06-26
GIGA BYTE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of the above problems, the present invention provides a digital projector and its image calibration method, thereby solving the conventional problem of adjusting the focal length of a digital projection device and calibrating trapezoidal distortion by relying on artificial settings.

Method used

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  • Projector and image calibration method for same
  • Projector and image calibration method for same
  • Projector and image calibration method for same

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Embodiment Construction

[0028] Please refer to figure 1 A schematic diagram of a digital projection device according to an embodiment of the present invention is shown. The digital projection device 10 of this embodiment includes an image generation module 100 , a capture module 200 , a control unit 300 and a calibration module 400 . Wherein, the control unit 300 is electrically connected with the capture module 200 and the calibration module 400 respectively, and the calibration module 400 is connected with the image generation module 100 .

[0029] It is worth noting that the calibration module 400 described in this embodiment includes but is not limited to mechanisms such as server motors or servo drives, and the connection methods between the calibration module 400 and the image generation module 100 also include but are not limited to electrical connections and structural connections Any connection method that enables the calibration module 400 to control the projection focal length and projecti...

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Abstract

The invention relates to a projector which comprises an image generation module, an acquisition module, a control unit and a calibration module. The control unit is electrically connected with the acquisition module, and the calibration module is connected with the control unit electrically and further connected with the image generation module. The image generation module generates a projection image, and a projection distance is arranged between the projection image and the image generation module. The acquisition module acquires the projection image and converts the projection image into an image signal. The control unit receives the image signal, calculates a projection proportion according to the projection distance and compares the projection proportion with the image signal to generate a calibration signal correspondingly. The calibration module receives the calibration signal and adjusts projection setting of the image generation module according to the calibration signal to achieve the efficacy of automatic calibration of the projector.

Description

【Technical field】 [0001] The invention relates to a projection device, in particular to a digital projection device with automatic calibration function and its image calibration method. 【Background technique】 [0002] Digital projection device is a commonly used image generation device nowadays. Because it can be connected to a computer and directly project the computer screen, and it is convenient to carry, it is widely used by companies, schools and other groups. [0003] Generally speaking, digital projection devices will have the most ideal preset projection distance and preset projection angle built in when projecting images. When the image is projected at the preset projection distance and meets the preset projection angle, the projection Images are clear and undistorted. However, due to the limitation of the size of the indoor space and the different placement of digital projection devices, the image cannot be projected at the preset projection distance and projectio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/74H04N9/31
Inventor 毛黛娟
Owner GIGA BYTE TECH CO LTD
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