Publications related to Stair climbing detection during daily physical activity using a miniature gyroscope

The use of wavelet transform for an automated initialization in GPS/MEMS-IMU integration

Jan Skaloud, Adrian Wägli, Heidi Fournier

The main objective of this research is in automating the initialization phase of the MEMS-IMZ/GPS data integration. The motivation for this study is the special case where the before mentioned sensors are worn on a body (e.g. of an athlete) and where the u ...

2009

Automated Processing of GPS/MEMS-IMU Data for Position, Velocity and Attitude Determination

This master thesis deals with the problematic of the integration of Global Positioning System (GPS) measurements with inertial data acquired by a Micro-Electro-Mechanical System (MEMS) Inertial Measurement Units (IMU). This technology is employed for the p ...

2009

Ambulatory evaluation of 3D knee joint function in patients with ACL rupture using inertial sensors

Julien Favre

In orthopaedics, outcome evaluation is currently recognized as a major challenge to improve the knowledge both about injuries and treatments. For anterior cruciate ligament (ACL) rupture, various evaluation tools are available for routine uses: clinical ex ...

EPFL2008

The Monogenic Riesz-Laplace Wavelet Transform

Michaël Unser, Dimitri Nestor Alice Van De Ville, Katarina Balac

We introduce a family of real and complex wavelet bases of

L _{ 2 }

(\mathbb{R} ^{ 2 }

) that are directly linked to the Laplace and Riesz operators. The crucial point is that the family is closed with respect to the Riesz transform which maps a re ...

EURASIP2008

Polymer microoptoelectromechanical systems: Accelerometers and variable optical attenuators

Luis Guillermo Villanueva Torrijo, Victor Javier Cadarso Busto

This paper presents the design, fabrication and characterization of polymer microoptoelectromechanical systems (MOEMS). An optical accelerometer and a variable optical attenuator (VOA) based on SU-8 are presented. Both devices consist on a quad-beam polyme ...

2008

Ambulatory analysis of physical activities in Parkinson's disease using kinematics sensors

Kamiar Aminian, Arash Salarian

INTRODUCTION: Motor performance in Park-inson’s Disease (PD) patients is generally analyzed in laboratory. However, laboratory techniques do not allow estimating long-term ON/OFF fluctua-tion in PD patients. Here, we propose an ambula-tory system based on ...

2005

Intra-Adaptive Motion-Compensated Lifted Wavelets for Video Coding

Pierre Vandergheynst, Oscar Divorra Escoda

In this work, we study the effect of inserting spatially local temporal adaptivity to motion compensated frame adaptive transforms for video coding. Motion compensation aligns the temporal wavelet decomposition along motion trajectories. However, valid tra ...

2004

Extended Depth-of-Focus for Multi-Channel Microscopy Images: A Complex Wavelet Approach

Michaël Unser, Dimitri Nestor Alice Van De Ville, Daniel Sage

Microscopy imaging often suffers from limited depth-of-focus. However, the specimen can be “optically sectioned” by moving the object along the optical axis; different areas appear in focus in different images. Extended depth-of-focus is a fusion algorithm ...

IEEE2004

Ambulatory system for human motion analysis using a kinematic sensor: Monitoring of daily physical activity in the elderly

Kamiar Aminian, Philippe Robert, Anisoara Ionescu, Bijan Najafi

A new method of physical activity monitoring is presented, which is able to detect body postures (sitting, standing, and lying) and periods of walking in elderly persons using only one kinematic sensor attached to the chest. The wavelet transform, in conju ...

2003

Body movement monitoring device

Kamiar Aminian, Pascal Morel, Bijan Najafi, Jean Gramiger

The invention relates to a device and a method for measuring gait parameters. It is based on autonomous sensing units for estimation of spatio-temporal parameters during walking and uses a wavelet transform to compute the values of gait parameters from the ...

2003

Stair climbing detection during daily physical activity using a miniature gyroscope

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The use of wavelet transform for an automated initialization in GPS/MEMS-IMU integration

Automated Processing of GPS/MEMS-IMU Data for Position, Velocity and Attitude Determination

Ambulatory evaluation of 3D knee joint function in patients with ACL rupture using inertial sensors

The Monogenic Riesz-Laplace Wavelet Transform

Polymer microoptoelectromechanical systems: Accelerometers and variable optical attenuators

Ambulatory analysis of physical activities in Parkinson's disease using kinematics sensors

Intra-Adaptive Motion-Compensated Lifted Wavelets for Video Coding

Extended Depth-of-Focus for Multi-Channel Microscopy Images: A Complex Wavelet Approach

Ambulatory system for human motion analysis using a kinematic sensor: Monitoring of daily physical activity in the elderly

Body movement monitoring device

Automated Processing of GPS/MEMS-IMU Data for Position, Velocity and Attitude Determination

Ambulatory evaluation of 3D knee joint function in patients with ACL rupture using inertial sensors

Intra-Adaptive Motion-Compensated Lifted Wavelets for Video Coding

Extended Depth-of-Focus for Multi-Channel Microscopy Images: A Complex Wavelet Approach

Body movement monitoring device

Polymer microoptoelectromechanical systems: Accelerometers and variable optical attenuators

The Monogenic Riesz-Laplace Wavelet Transform

The use of wavelet transform for an automated initialization in GPS/MEMS-IMU integration

Ambulatory analysis of physical activities in Parkinson's disease using kinematics sensors

Ambulatory system for human motion analysis using a kinematic sensor: Monitoring of daily physical activity in the elderly