Class specific dynamic feature selection technique &amp;#x2014; Towards human movement based biometrics application

Unnikrishnan, P.; Kumar, Deepak; Arjunan, Sridhar P.

doi:10.1109/brc.2013.6487462

Cited by 2 publications

(1 citation statement)

References 10 publications

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“…These devices are also suitable for obtaining the dynamic features of handwriting, which are suitable for real-time and reliable analysis ( 10 , 11 ). These features can be obtained automatically allowing rapid on-line assessment of patients ( 12 ) and developed for applications such as biometrics ( 13 ) and indicative markers for PD ( 14 ).…”

Section: Introductionmentioning

confidence: 99%

Distinguishing Different Stages of Parkinson’s Disease Using Composite Index of Speed and Pen-Pressure of Sketching a Spiral

et al. 2017

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The speed and pen-pressure while sketching a spiral are lower among Parkinson’s disease (PD) patients with higher severity of the disease. However, the correlation between these features and the severity level (SL) of PD has been reported to be 0.4. There is a need for identifying parameters with a stronger correlation for considering this for accurate diagnosis of the disease. This study has proposed the use of the Composite Index of Speed and Pen-pressure (CISP) of sketching as a feature for analyzing the severity of PD. A total of 28 control group (CG) and 27 PD patients (total 55 participants) were recruited and assessed for Unified Parkinson’s Disease Rating Scale (UPDRS). They drew guided Archimedean spiral on an A3 sheet. Speed, pen-pressure, and CISP were computed and analyzed to obtain their correlation with severity of the disease. The correlation of speed, pen-pressure, and CISP with the severity of PD was −0.415, −0.584, and −0.641, respectively. Mann–Whitney U test confirmed that CISP was suitable to distinguish between PD and CG, while non-parametric k-sample Kruskal–Wallis test confirmed that it was significantly different for PD SL-1 and PD SL-3. This shows that CISP during spiral sketching may be used to differentiate between CG and PD and between PD SL-1 and PD SL-3 but not SL-2.

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