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Parallel AA method and device for structured light module, and readable storage medium

A structured light and module technology, applied in the field of structured light, to achieve the effect of correcting the tilt problem

Active Publication Date: 2019-01-01
TRULY OPTO ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Theoretically, the light emitting axis of the structured light emitter should be parallel to the light incident axis of the structured light camera, but due to manufacturing tolerances and design errors, the structured light module will inevitably have tilt problems

Method used

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  • Parallel AA method and device for structured light module, and readable storage medium
  • Parallel AA method and device for structured light module, and readable storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Such as figure 1 and 2 As shown, a parallel AA method for a structured light module. The structured light module includes a structured light emitter and a structured light camera. The steps include:

[0035] Step 1: Project the structured light onto the projection plane with the structured light emitter, and shoot the structured light camera onto the projection plane to obtain a structured light image, wherein the center C1 of the light emitting surface of the structured light emitter and the The center line C1C2 between the lens optical centers C2 of the structured light camera is parallel to the projection plane;

[0036] In step 1, the projection plane may be, but not limited to, a projection screen.

[0037] Step 2: Calculate the incident angle offset of the structured light camera according to the acquired structured light image;

[0038] Specifically, this step 2 includes:

[0039] Step 2.1: If figure 2 As shown, with the photosensitive surface of the struct...

Embodiment 2

[0063] A parallel AA device of a structured light module, the structured light module includes a structured light emitter and a structured light camera, characterized in that it includes:

[0064] A projection plane, used for projection and shooting by the structured light module to obtain structured light images;

[0065] The computing mechanism is used to read the structured light image acquired by the structured light module, and perform step 2 in the parallel AA method of the structured light module described in Embodiment 1, so as to calculate the incidence of the structured light camera angular offset;

[0066] The adjustment mechanism is used to fix the structured light emitter or the structured light camera, and adjust the structured light camera or the structured light emitter according to the calculated incident angle offset of the structured light camera, so that the structured light emitter The light emitting axis of the camera is parallel to the light incident ax...

Embodiment 3

[0068] A readable storage medium stores a computer program for execution by a processor. When the computer program is executed by the processor, step 2 in the parallel AA method for the structured light module described in Embodiment 1 is performed.

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Abstract

The invention discloses a parallel AA method and device for a structured light module, and a readable storage medium. The parallel AA method for a structured light module includes the steps: 1) projecting structured light to a projection plane by a structured light emitter, and shooting the projection plane to obtain a structured light image by a structured light camera, wherein a center connection line between the center of a light emitting surface of the structured light emitter and the center of a lens optical center of the structured light camera is parallel to the projection plane; 2) calculating the incident angle offset of the structured light camera according to the acquired structured light image; and 3) fixing the structured light emitter or the structured light camera, and adjusting the structured light camera or the structured light emitter according to the calculated incident angle offset of the structured light camera, so as to enable the light emitting axis of the structured light emitter and the entrance optical axis of the structured light camera to be parallel. The parallel AA method for a structured light module can correct the tilt problem of the module due to manufacturing tolerances and design errors, etc., so as to enable the light emitting axis of the structured light emitter and the entrance optical axis of the structured light camera to be parallel.

Description

technical field [0001] The invention relates to the field of structured light, in particular to a parallel AA method, device and readable storage medium of a structured light module. Background technique [0002] With Apple's first use of structured light technology on mobile phones, it will be the mainstream development direction to use structured light modules on smart terminals for face recognition and 3D sensing. The structured light module includes a structured light emitter and a structured light camera, the structured light emitter is used to project coded structured light to the subject, the structured light camera is used to capture the structured light image of the subject, and then The image processor at the end decodes the structured light image according to the image algorithm to obtain the depth information of the subject. Theoretically, the light emitting axis of the structured light emitter should be parallel to the light incident axis of the structured ligh...

Claims

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Application Information

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IPC IPC(8): G03B15/02G03B30/00
CPCG03B15/02
Inventor 林挺
Owner TRULY OPTO ELECTRONICS
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