Three-dimensional image ranging system and method

A technology of ranging system and three-dimensional image, which is applied to measuring devices, instruments, and optical devices, etc., can solve the problems of limiting the accuracy of three-dimensional information and insufficient precision.

Active Publication Date: 2021-03-26
SHENZHEN GOODIX TECH CO LTD
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Problems solved by technology

[0004] However, the existing structured light 3D measurement system is not precise enough to calculate th

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  • Three-dimensional image ranging system and method

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[0053] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0054] In the specification and claims of the present application, the addition, subtraction, multiplication and division between image A and image B represents the addition, subtraction, multiplication and division between pixels of image A and image B. In detail, assuming that A(n,m), B(n,m) and C(n,m) respectively represent the pixel values ​​of image A, image B and image C at the pixel coordinate position (n,m), image C Equal to image A plus image B (denoted as C=A+B) represents the (n,m)th pixel value C(n,m) of image C as C(n,m)=A(n,m)+B (n, m), image C is equal to i...

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Abstract

A three-dimensional image ranging system (10), comprising a light-emitting module (12), a photosensitive pixel array (142) and an operation unit (16). The light-emitting module transmits a first structured light in a first time and transmits a second structured light in a second time, wherein the structured light phase difference between the first structured light and the second structured light is an odd multiple of π/2. The photosensitive pixel array generates a first image (P1) in the first time and generates a second image (P2) in the second time. The operation unit is used for generating an in-phase image (I) related to the first structured light and an orthogonal image (Q) related to the second structured light according to the first image and the second image, and generating a depth image (DP) corresponding to a target object according to the in-phase image and the orthogonal image.

Description

technical field [0001] The present application relates to a three-dimensional image ranging system and method, in particular to a three-dimensional image ranging system and method capable of calculating the fine position of structured light. Background technique [0002] With the rapid development of science and technology, the acquisition of three-dimensional information of objects has broad application prospects in many application fields, such as production automation, human-computer interaction, medical diagnosis, reverse engineering, digital modeling, etc. Among them, the structured light three-dimensional measurement method, as a non-contact three-dimensional information acquisition technology, has been widely used because of its advantages of simple implementation, fast speed and high precision. [0003] The basic idea of ​​the structured light 3D measurement method is to use the geometric relationship of the structured light projection to obtain the 3D information of...

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Application Information

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IPC IPC(8): G01B11/25G01B11/22
CPCG01B11/22G01B11/25
Inventor 杨孟达
Owner SHENZHEN GOODIX TECH CO LTD
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