Path Mapping of Shape Drawings Using Double Integration Technique

A preliminary path tracking experiment was done and a mapping system was developed in this study. Data collection of human activities in this study was focused on different shape of hand drawings. Five subjects were required to draw three types of shapes (circle, square and triangle) according to their convenience pace. A sensor consists of accelerometer, gyroscope and compass was attached firmly on subject's wrist with special designed holder. PCA and double integration technique were used to process and analyze the data. The tracking path was mapped and presented in GUI developed by MATLAB. The developed GUI is capable to display the tracking with animation starting from the first stroke until the end. The GUI is managed to trace the upper-limbs tiny motion accurately and presented well in graphic form.