Detection of gestures without begin and end markers by fitting into Bézier curves with least squares method

•Curve fitting using least-squares method is presented with resource usage outline.•Method of gesture detection without begin and end markers is proposed.•Concludes with visualization of gesture detection.

Gesture recognition is used to obtain natural way of device control. This paper describes a method of extracting predefined gestures from series of points without a marker, when the gesture begins or ends. Presents a way to fit points to Bézier curve with constant memory usage. The procedure is based on least-squares method. Concludes with usage of algorithm to detect loops in series of points.