In this paper, performance analysis of hybrid localization based on radio-frequency (RF) and inertial measurement unit (IMU) measurements for a single wireless capsule endoscopy (WCE) traveling the gastrointestinal tract is studied. Specifically, the multiple bodymounted sensors are considered which are located on the front and back of a patient’s medical jacket and form the uniform rectangular...

One precondition for direct sensor orientation with GPS and IMU is the correct sensor calibration. The related parameters as well as the relation between the IMU and the aerial camera (boresight misalignment) have to be determined by conventional bundle block adjustment. During this process a camera self calibration (focal length, principal point, additional parameters etc.) may be performed un...

This paper presents methods to calibrate and compensate for non-zero biases, non-unit scale factors, axis misalignments and cross-axis sensitivities of both the tri-axial accelerometer and gyroscopic setups in a micro-electro-mechanical systems (MEMS) based inertial measurement unit (IMU). These methods depend on the Earth’s gravity as a stable physical calibration standard. Specifically, the c...

A single low cost inertial measurement unit (IMU) is often used in conjunction with GPS to increase the accuracy and improve the availability of the navigation solution for a pedestrian navigation system. This paper develops several fusion algorithms for using multiple IMUs to enhance performance. In particular, this research seeks to understand the benefits and detriments of each fusion method...

This thesis deals with pedestrian localization by way of multi-sensor fusion. A special focus is made on the use of a foot-mounted inertial measurement unit (IMU) and its incorporation into other pedestrian navigation systems. Mounting to the foot location is preferred due to the anticipated dynamics of the foot during normal walking motion, but poses difficulty when fusing with other body-worn...

INTRODUCTION Assessment of movement dysfunctions commonly comprises trunk range of motion (ROM), movement or control impairment (MCI), repetitive movements (RM), and reposition error (RE). Inertial measurement unit (IMU)-systems could be used to quantify these movement dysfunctions in clinical settings. The aim of this study was to evaluate a novel IMU-system when assessing movement dysfunction...

Abstract: In this study a sensor fusion technique was developed for indoor localization of omnidirectional mobile robots. The proposed sensor fusion method combines the measurements made by an indoor localization system (e.g. ultrasound based localization) with the measurements that comes from an IMU (Inertial Measurement Unit). It was taken into consideration that the measurements made by the ...

BACKGROUND Inappropriate medication use (IMU) by elderly people is a public health problem associated with adverse effects on health. There are a number of methods for identifying IMU, some involving clinical judgment and others, consensually generated lists of drugs to be avoided. This review aims to describe studies that used information from insurance company and social security administrati...

In this paper we describe an infrastructureless indoor navigation system based on wireless inertial measurement units (IMUs). After a short calibration, only one IMU is required, that can be placed in the user’s pocket, in contrast to other approaches that require the constant use of a cumbersome foot-mounted IMU. The position accuracy of the system can be improved through map-matching, where t...