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Use of motion capture in assisted of knee ligament injury diagnosis

Bednarski R., Bielak A.

Journal of Applied Computer Science

2018

Vol. 26, nr 1

7--32

This study treats of the use of motion capture systems as the help diagnose knee injuries. It consists of the theoretical work and the application. The written work describes a course of research includes choice of research group, selection of appropriate exercises, find useful computational methods, description created for research applications and summary results. The practical part was to create an application for physiotherapists which could help them to diagnosis potential pathology of the knee. The purpose of this study was to test whether a motion capture system dedicated to entertainment can be used in the medical aspect. This system was test for selected methods and determined to be suitable for supporting the diagnosis of knee injuries. Otherwise it has to be written what was the reason of failure. The results of the study were that after trial and error methods peeled action and created application proved helpful.

Areosol layers in the atmosphere observed by vertical-sounding lider as an indication of mixing layer height - comparison with acoustic sounding data.

Walczewski J., Bielak A., Kaszowski W.

Optica Applicata

1999

Vol. 29, nr 4

449-459

The main objective of the study was to compare the height to which aerosols are mixed with the vertical range of turbulet processes that may be responsible for mixing. The aerosol mixing height was determined by lider sounding of the atmosphere, the vertical range of turbulent process was estimated on the basis of the analysis of acoustic echoes obtained by means of acoustic (sodar)sounding of the Atmospheric Boundary Layer (ABL). Data from 344 observation hours (parallei lider and sodar soundings) are analysed. In addition, some data on the SO2 - mixingheight (compared with lider and sodar data) were taken into account. The analysis is made separately for two kinds of ABL structures, differing in their physical characteristics: convective structure and stable (inversion) structures. For both cases, the relative indices representing the relation of lider to sodar estimations of mixing height are characterized by some distribution of values. This distribution suggests the existence of a combination of physical factor creating the aerosol mixing layer. In this combination of factors, the contribution of such processes like vertical motions generated by convection turbulence generated by gravitational waves, turbulence produced by wind shear, may create different vertical structures of aerosol layer. The complexity of the problem makes it necessary to organize further experiments with parallel application of different measuring techniques.