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Method and apparatus for generating a depth map of a scene

A depth map and scene technology, applied in the field of 3D computer graphics, can solve the problems of poor definition and precision loss, etc.

Inactive Publication Date: 2018-05-22
INTERDIGITAL CE PATENT HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One of the problems with such a structured light approach is the loss of precision for the furthest objects
It should be realized that in the case of uniform density projection the farthest objects are already less sharp than the closest objects

Method used

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  • Method and apparatus for generating a depth map of a scene
  • Method and apparatus for generating a depth map of a scene
  • Method and apparatus for generating a depth map of a scene

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Experimental program
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Embodiment Construction

[0022] Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. In the following description, some detailed descriptions of well-known functions and configurations may be omitted for conciseness.

[0023] figure 2 is a flowchart illustrating a method of generating a depth map of a scene according to an embodiment of the present invention.

[0024] In step 201, a structured light pattern with uniform density is projected onto a scene to obtain a first depth map.

[0025] In this step, a pattern projector can be used to project a structured light pattern onto the scene. Any suitable light source can be used for the pattern projector, including but not limited to the IR projectors described above. In this case, it should be realized that the light incident from the pattern projector is IR. As mentioned above, the projected pattern may be a layout of dots. image 3 is an example diagram showing a structured light patte...

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PUM

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Abstract

Methods and apparatus for generating a depth map of a scene are described. The method comprises the steps of: projecting a structured light pattern with uniform density onto the scene to obtain a first depth map; dividing the scene into at least one region based on the depth information in the first depth map; and by making the density of the light pattern Adapting to at least one region of the scene, projecting a structured light pattern with non-uniform density onto the scene to obtain a second depth map of the scene.

Description

technical field [0001] The present invention relates generally to 3D computer graphics. In particular, the present invention relates to methods and apparatus for generating a depth map of a scene. Background technique [0002] In 3D computer graphics, a depth map is an image that contains depth information related to the distance of the surfaces of objects in the scene from the viewpoint. A depth map is usually a 2D image with pixel values ​​corresponding to distances, e.g. brighter values ​​mean shorter distances, or vice versa. [0003] The depth information contained in the depth map can serve several purposes. For example, it can be used to simulate the effect of uniform dense translucent media in scenes such as fog or smoke. [0004] Microsoft's Kinect system proposes the use of structured light to build a depth map of a scene. The structured light method represents the process of projecting a known pattern of pixels (often a grid or horizontal bars) onto a scene. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N13/271G06T15/50G06T7/521
CPCG06T7/50G06T2207/10028H04N2013/0081G06T2207/10152G06T7/521H04N13/271H04N13/00G06T15/50
Inventor P.茹埃V.阿洛姆C.巴亚尔
Owner INTERDIGITAL CE PATENT HLDG