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Scene depth measurement method, equipment and imaging device

A technology of scene depth and measurement method, which is applied in the direction of measuring device, optical device, image enhancement, etc., can solve the problems of slow acquisition of scene depth and complex image processing, and achieve the effect of fast and effective measurement and simplified image processing

Pending Publication Date: 2016-12-14
成都微晶景泰科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of this, the present invention provides a scene depth measurement method, equipment and imaging device to solve the problem of complex image processing and slow acquisition of scene relative depth in the prior art when measuring the relative depth of the scene

Method used

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  • Scene depth measurement method, equipment and imaging device
  • Scene depth measurement method, equipment and imaging device
  • Scene depth measurement method, equipment and imaging device

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Experimental program
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Effect test

Embodiment 1

[0043] See figure 2 and image 3 , figure 2 It is a schematic flow chart of using the DFD algorithm in the scene depth measurement method in Embodiment 1 of the present invention, image 3 for figure 2 Schematic diagram of acquiring the relative depth of the scene by acquiring two images in . Such as figure 2 and image 3 As shown, when the scene depth measurement method of the present invention adopts the DFD algorithm, it mainly includes the following steps:

[0044] S11 at time T1, drive a variable focus lens unit with a first driving voltage to acquire a first image at a first optical power;

[0045] S12 Acquire the first relative defocus degree of the first image; the first relative defocus degree is also obtained through the circle of confusion formula.

[0046] S13 At time T2, drive the variable focus lens unit with a second driving voltage to acquire a second image at a second optical power, wherein the first driving voltage is different from the second drivin...

Embodiment 2

[0069] See Figure 4 and Figure 5 , Figure 4 It is a schematic flow diagram of the scene depth measurement method using the DFF algorithm in Embodiment 2 of the present invention, Figure 5 for Figure 4 Schematic diagram of the change relationship between the depth distribution of the focal plane in the center and the distribution of the focus value of the same target in the same scene. Such as Figure 4 and Figure 5 As shown, when the scene depth measurement method of the present invention adopts the DFF algorithm, it mainly includes the following steps:

[0070] S21 At multiple moments, control the variable focus lens unit to have different focal powers, and respectively collect images of the same target in the same scene at each moment;

[0071] S22 acquires the focus value of the image at each moment;

[0072] S23, according to the focus value of the image at each moment, fit the mapping relationship between the focus value distribution and the depth distributio...

Embodiment 3

[0081] See Figure 6 , Figure 6 It is a schematic structural diagram of a scene depth measurement device according to Embodiment 3 of the present invention. Such as Figure 6 As shown, Embodiment 3 of the present invention provides a scene depth measurement device, including:

[0082] A variable focus lens unit 10 for forming a gradient refractive index profile;

[0083] processing unit 20;

[0084] a memory 30 storing program instructions;

[0085] Wherein, the processing unit 20 is respectively connected to the memory 30 and the variable focus lens unit 10, and the processing unit 20 calls the program instructions stored in the memory 30 to realize the following functions:

[0086] Drive a variable focus lens unit to obtain at least two images of the same scene under at least two focal powers, and the magnification ratio of each image is the same;

[0087] Obtain the relative defocus value or focus value of each image respectively;

[0088] The relative depth distrib...

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Abstract

The invention discloses a scene depth measurement method, equipment and an imaging device. The scene depth measurement method comprises the following steps: S1, driving a varifocal lens unit to acquire at least two images from the same scene under at least two focal powers, wherein the magnifying powers of the images are the same; S2, respectively acquiring a relative defocusing degree value or focusing degree value of each image; S3, acquiring the relative depth distribution of the scene through a DFD algorithm or a DFF algorithm. Through the adoption of the scene depth measurement method, the equipment and the imaging device disclosed by the invention, the operation of changing the magnifying powers of the images of the same scene is unnecessary, the image processing is simplified, and the relative depth distribution of the scene can be rapidly and effectively measured.

Description

technical field [0001] The present invention relates to a method and equipment for measuring object distance, in particular to a method and equipment for measuring scene depth and an imaging device based on the above-mentioned scene depth measuring equipment. Background technique [0002] In recent years, with the success of Microsoft Corporation in the United States on Kinect products, depth camera technology has received more and more attention from the industry. Depth cameras measure the distance between the scene and the camera. Obtaining the depth information of the scene has brought a lot of room for the development of human-computer interaction technology. With the two-dimensional image of the ordinary camera, people can easily obtain the three-dimensional information of the surrounding scene. Therefore, this type of product has begun to be widely used in many fields such as industrial automation, computer graphics, virtual reality, interaction between robots and nat...

Claims

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Application Information

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IPC IPC(8): H04N5/232G06T7/00G01B11/22
CPCG01B11/22G06T2207/10028H04N23/67
Inventor 李其昌
Owner 成都微晶景泰科技有限公司
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