Determining the movements of the skeleton using well-configured markers

Assessing the Suitability of the Microsoft Kinect for Calculating Person Specific Body Segment Parameters

“…Sphere centres were identified using a combination of Hough transforms [43] and a minimisation technique (figure 2c and 2e). A rigid body transformation algorithm [41] and RANSAC optimisation [38] used the sphere centre locations to calculate the requisite transformation matrices. …”

The influence of orthotic devices and vastus medialis strength and timing on patellofemoral loads during running

“…Three retro refective markers were attached to each subject's right shoe (lateral head of the ffth metatarsal, posterior heel, superior lateral aspect of the navicular), shank (head of fbula, anterior mid shaft of tibia, and distal fbula just proximal to the lateral maleolus), thigh (greater trochanter, anterior mid thigh, lateral femoral epicondyle) and pelvis (left and right anterior superior illiac spines, and right posterior supe rior illiac spine). The marker data were used to recon struct the position and orientation of each body segment [35]. From the limb segment orientations, hip and knee angles were determined using the joint coordinate sys tem of Grood and Suntay [36] and the subtalar and talocrural joint angles were determined using the joint coordinate system of Inman [30].…”

The Influence of a Suction Device on Fixation of a Cemented Cup using RSA

“…This is the mathematical expression of how the markers in an object of interest (the rigid body), related to an arbitrary straight line passing through that rigid body [28]. The larger the value, the more the markers align with the line, that is, the less they lend themselves to the provision of high accuracy.…”