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System and method for calibrating a depth imaging sensor

A depth image, sensor technology, applied in the field of home depth camera calibration

Active Publication Date: 2014-11-05
MICROSOFT TECH LICENSING LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The result of this distortion may be a drift in the camera's depth range, distortion in object size, or a variety of other distortions may occur

Method used

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  • System and method for calibrating a depth imaging sensor
  • System and method for calibrating a depth imaging sensor
  • System and method for calibrating a depth imaging sensor

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Embodiment Construction

[0037] Reference will now be made to the attached Figure 1-24B Various embodiments of a system for calibrating a depth camera will be described generally relating to the techniques of the present disclosure. The system generally obtains an objective measure of the distance between the depth camera and one or more objects in the scene, referred to herein as true depth. The system then compares the true depth measurement with the depth measurement provided by the depth camera at one or more points and determines an error function describing the error in the depth camera measurement. The depth camera is then recalibrated to correct for this error. Objective measurement of distance to one or more objects in a scene can be accomplished by various systems and methods. These systems and methods are described below.

[0038] first reference Figure 1-3 , the hardware used to implement the present technique includes an object recognition, analysis, and tracking system 10 that can ...

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Abstract

A system and method are disclosed for calibrating a depth camera in a natural user interface. The system in general obtains an objective measurement of true distance between a capture device and one or more objects in a scene. The system then compares the true depth measurement to the depth measurement provided by the depth camera at one or more points and determines an error function describing an error in the depth camera measurement. The depth camera may then be recalibrated to correct for the error. The objective measurement of distance to one or more objects in a scene may be accomplished by a variety of systems and methods.

Description

technical field [0001] The present invention relates to depth cameras, and more particularly to depth camera calibration at home. Background technique [0002] In the past, computing applications, such as computer games and multimedia applications, used controllers, remote controls, keyboards, mice, etc. to allow users to manipulate game characters or other aspects of the application. More recently, computer games and multimedia applications have begun to use cameras and software gesture recognition engines to provide a natural user interface ("NUI"). Using the NUI, user gestures and speech are detected, interpreted, and used to control game characters or other aspects of the application. [0003] NUI systems use three-dimensional (3-D) depth cameras to capture three-dimensional data of a scene. Depth cameras require several components to be precisely aligned to correctly measure depth. Even small misalignments can cause significant depth measurement errors. Misalignmen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N17/00H04N13/00
CPCG06T7/002G06T7/0075G06F3/017G06T2207/30196H04N13/0425G06T2207/10021H04N13/0271H04N13/0022A63F13/213A63F13/22G06T2207/10028G06T7/80H04N13/128H04N13/271H04N13/327
Inventor P·J·玛萨尔卡S·P·斯塔赫尼亚克T·拉万德Z·张L·D·卡斯蒂略Z·马特
Owner MICROSOFT TECH LICENSING LLC