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Projection mapping method and device

A projection image and projection technology, applied in the field of three-dimensional reconstruction, can solve the problems of inability to obtain accurate phase difference, difficult to obtain depth information, complicated operation process, etc., to achieve better projection effect, simplified operation process, and convenient use.

Pending Publication Date: 2021-04-06
BEIJING TRICOLOR TECH
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Problems solved by technology

[0003] The recent phase-height mapping theory, by projecting multiple grating images with a certain phase difference to the reference plane and the detection surface, and then combining the phase-height mapping relationship, the relative depth information from the detection surface to the reference surface is obtained, which is more traditional. The method has been improved, and the operation process has been simplified, but for scenarios without a reference plane, it is impossible to obtain accurate phase difference, and it is difficult to obtain depth information
Moreover, although the operation process has been simplified to a certain extent, the process is still relatively complicated
[0004] Therefore, the existing camera-projector 3D reconstruction technology has complicated operation process and poor practicability

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Embodiment Construction

[0036] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. The specific operation methods in the method embodiments can also be applied to the device embodiments or system embodiments. In the description of the present application, unless otherwise specified, "at least one" includes one or more. "Multiple" means two or more. For example, at least one of A, B and C includes: A alone, B alone, A and B at the same time, A and C at the same time, B and C at the same time, and A, B and C at the same time. In this application, " / " means or, for example, A / B can mean A or B; "and / or" in this article is just an association relationship describing associated objects, indicating that there can be three relationships, For example, A and / or B may mean that A exists alone, A and B exist simultaneously, and B exists alone.

[0037] Before introducing the projection mapp...

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Abstract

The invention provides a projection mapping method and device. The projection mapping method is applied to control equipment in the projection mapping control system, and the control system further comprises a camera and a projector. The method comprises the following steps: acquiring a grating image, wherein the grating image is an image which is collected by a camera and contains a grating pattern projected by a projector on a to-be-projected object; obtaining a parallax image of the projector based on the grating image; obtaining a discrete color image, wherein the discrete color image is an image obtained after the grating image is transformed, and the discrete color image comprises a hole area; repairing the hole area based on the parallax image to obtain a first repaired image; generating a projection image based on the first restored image and the parallax image; and controlling a projector to project the projection image on a to-be-projected object. The method is used for simplifying the operation process of projection mapping and improving the practicability.

Description

technical field [0001] The present application relates to the technical field of three-dimensional reconstruction, in particular, to a method and device for projection mapping. Background technique [0002] In the existing camera-projector 3D reconstruction technology, it is basically necessary to strictly calibrate the attitude of the camera and projector. In the traditional triangulation principle, the relative attitude cannot be changed after each calibration. Once the relative position changes, the attitude calibration needs to be re-calibrated. [0003] The recent phase-height mapping theory, by projecting multiple grating images with a certain phase difference to the reference plane and the detection surface, and then combining the phase-height mapping relationship, the relative depth information from the detection surface to the reference surface is obtained, which is more traditional. The method has been improved, and the operation process has been simplified, but f...

Claims

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Application Information

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IPC IPC(8): G06T7/80G06T5/00G06T17/00G06T19/20
CPCG06T7/80G06T17/00G06T19/20G06T5/77Y02P90/02
Inventor 程星凯
Owner BEIJING TRICOLOR TECH
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