Unlock instant, AI-driven research and patent intelligence for your innovation.

Detecting motion for a multifunction sensor device

A motion and motion tracking technology, applied in the field of motion capture systems, which can solve problems such as damage and impact

Active Publication Date: 2014-07-16
MICROSOFT TECH LICENSING LLC
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such systems are impaired by vibrations, jolts, shaking, and other movements and disturbances that can affect audio and visual performance

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Detecting motion for a multifunction sensor device
  • Detecting motion for a multifunction sensor device
  • Detecting motion for a multifunction sensor device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] A technique for accurately detecting when an accelerometer-equipped sensor is disturbed is provided. In one example, the sensor is a depth camera in a motion tracking system. In one approach, readings from a three-axis accelerometer are processed to provide short-term and long-term moving averages for each of the x-axis, y-axis, and z-axis. For each axis, obtain the difference between the short-term and long-term averages. The sum of the differences is obtained by summing the absolute value of each difference across all three axes. The sum of the differences is then compared to a threshold to determine if motion is detected. In another approach, short- and long-term averages of accelerometer readings are converted to pitch and roll values, and the pitch and roll values ​​are individually compared to thresholds to determine whether motion is detected.

[0030] Furthermore, although the use of accelerometers was explained specifically in connection with a depth camera ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

To detect movement of a depth camera in a motion capture system, readings from accelerometers in the depth camera are processed to provide short-term and long-term moving averages for each of the x-axis, y-axis, and z-axis. For each axis, obtain the difference between the short-term and long-term averages. The sum of the differences is obtained by summing the absolute value of each difference across all three axes. The sum of the differences is then compared to a threshold to determine if motion is detected. In another approach, short-term and long-term averages of accelerometer readings are converted to pitch and roll values, and the pitch and roll values ​​are compared separately to thresholds to determine whether motion is detected. The tracking algorithm can be temporarily suspended when motion is detected. The readout in the vertical direction can be attenuated by a scaling factor.

Description

technical field [0001] The present invention relates to motion capture systems, and more particularly to detecting motion in motion capture systems. Background technique [0002] A motion capture system obtains data about the position and movement of a person or other subject in physical space and can use this data as input to an application in a computing system. There may be many applications such as for military, entertainment, sports and medical purposes. For example, human motion can be mapped to a three-dimensional (3-D) human skeletal model and used to create an animated character or avatar. Motion capture systems, which may include optical systems including systems using visible and invisible (eg, infrared) light, use cameras to detect the presence of people in the field of view. However, such systems suffer from vibrations, jolts, jolts, and other movements and disturbances that can affect audio and visual performance. Techniques for detecting and responding to t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/01G06T7/20
CPCH04N7/181
Inventor S·阿德曼
Owner MICROSOFT TECH LICENSING LLC