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Projector projection correction method and device and projector

A projector and projection technology, applied in the field of projectors, can solve the problems of complicated operation and low convenience, and achieve the effects of uniform brightness, reduced adjustment time, and reduced operation complexity.

Active Publication Date: 2022-07-08
深圳新智联软件有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on this, it is necessary to provide a projector projection correction method, device and projector for the problems of complex operation and low convenience through manual correction.

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  • Projector projection correction method and device and projector
  • Projector projection correction method and device and projector
  • Projector projection correction method and device and projector

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Embodiment Construction

[0069] In order to make the above objects, features and advantages of the present disclosure more clearly understood, the specific embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure. However, the present disclosure can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present disclosure. Therefore, the present disclosure is not limited by the specific embodiments disclosed below.

[0070] In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature delimited with "first", "second" m...

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Abstract

The invention relates to a projector projection correction method and device and a projector. Comprising the following steps: determining original coordinates of each projection angular point in a projection image in a system space coordinate system; according to the pose transformation information of the placement position of the projector relative to the standard state, determining transformation coordinates after the original coordinates of each projection angular point are transformed; according to the distance between the projector and the projection curtain and the transformation coordinate, determining the coordinate of a first intersection point of a connecting line of the projection angular point and the coordinate origin and the Z-axis plane; taking the barycentric coordinate of the first intersection point as a central coordinate, and determining a third projection plane with the largest area and the same length-width ratio as a second projection plane formed by the original coordinates in a first projection plane formed by the coordinates of the first intersection point; determining a virtual projection coordinate of each projection angular point in the third projection plane; determining coordinates of a second intersection point of a connecting line between the virtual projection coordinates and the origin of the coordinates and a fourth projection plane formed by the transformation coordinates; and carrying out image projection according to projection coordinates obtained by carrying out inverse operation on the coordinates of the second intersection point.

Description

technical field [0001] The present disclosure relates to the technical field of projectors, and in particular, to a projector projection correction method, device, and projector. Background technique [0002] When the placement of the projector is not aligned with the projection wall, the projection image projected on the projection wall will be trapezoidal or irregular convex quadrilateral, which affects the normal viewing of the user. Therefore, it is necessary to perform keystone correction on the projector to correct the projected image to obtain a more standard rectangle. [0003] In related scenarios, manual keystone correction is used to achieve keystone correction. For the specific address, the four corners of the projection screen can be adjusted up, down, left and right one by one through the specific operation interface of the projector, and then a relatively standard rectangle that can be judged by the naked eye can be obtained. However, this method is complicat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N9/31
CPCH04N9/3185
Inventor 冀振
Owner 深圳新智联软件有限公司
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