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Projection picture automatic calibration method and projection picture automatic calibration device

An automatic calibration and picture technology, applied in the field of projection, can solve the problems of complicated process, not enough intelligence, reducing the efficiency of trapezoidal calibration, etc., to achieve the effect of improving efficiency

Inactive Publication Date: 2016-02-10
TENCENT TECH (SHENZHEN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method of manually calibrating the trapezoidal deformation of the projection screen is complicated and not smart enough, which reduces the efficiency of trapezoidal calibration

Method used

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  • Projection picture automatic calibration method and projection picture automatic calibration device
  • Projection picture automatic calibration method and projection picture automatic calibration device
  • Projection picture automatic calibration method and projection picture automatic calibration device

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Embodiment Construction

[0031] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0032] refer to figure 1 , figure 1 It is a structure diagram of an embodiment of the projection system of the present invention, and the projection system includes: a camera device 100 , a projection device 200 and a micro-processing device 300 . The micro-processing device 300 may be a processing device such as a microcomputer including a CPU, a memory, and an operating system providing a program execution environment. The micro-processing device includes a camera device interface 3001 and a projection device interface 3002 , and is connected to the camera device 100 through the camera device interface 3001 , and connected to the projection device 200 through the projection device interface 3002 . The camera device 100 may be a USB camera device or a camera embedded in the above-mentioned micro processing device 3...

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Abstract

The invention discloses a projection picture automatic calibration method. The projection picture automatic calibration method comprises the steps of projecting a prestored calibration picture to a preset projection object so as to form a projection picture when a calibration instruction is detected; capturing the projection picture on the preset projection object in a preset capture region; calculating to acquire coordinate information of the projection picture in the preset capture region; comparing the capture region with the prestored calibration picture, and acquiring proportion information of the capture region and the prestored calibration picture; calculating to acquire the angle of each vertex of the projection picture according to the proportion information and the coordinate information; and adjusting projection parameters of the projection picture according to the angle of each vertex of the projection picture. The invention further discloses a projection picture automatic calibration device. According to the invention, calibration for deformation of the projection picture is realized automatically, and the efficiency of calibration for the projection picture is improved.

Description

technical field [0001] The invention relates to the field of projection technology, in particular to a projection screen automatic calibration method and device. Background technique [0002] Projection devices (for example, projectors) have the advantages of large area and small volume, and with the improvement of projection brightness and clarity of projectors, projectors are becoming more and more popular in daily life such as office briefing display and home theater projection playback. at work. However, the relative angle between the optical axis of the projection light projected from the projector and the projection object such as the screen will cause deformation of the projection screen of the projector, resulting in vertical or horizontal trapezoidal deformation of the projection object. [0003] Therefore, before using the projector, it is necessary to calibrate the trapezoidal deformation of the projection screen of the projection device, and perform normal proje...

Claims

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Application Information

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IPC IPC(8): H04N5/74H04N9/31
Inventor 方璡程俊
Owner TENCENT TECH (SHENZHEN) CO LTD
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