TITLE:
Holographic Raman Tweezers Controlled by Hand Gestures and Voice Commands
AUTHORS:
Zoltan Tomori, Marian Antalik, Peter Kesa, Jan Kanka, Petr Jakl, Mojmir Sery, Silvie Bernatova, Pavel Zemanek
KEYWORDS:
Holographic Optical Tweezers; Raman Tweezers; Natural User Interface; Leap Motion; Gesture Camera
JOURNAL NAME:
Optics and Photonics Journal,
Vol.3 No.2B,
July
23,
2013
ABSTRACT: Several attempts have appeared recently to control
optical trapping systems via touch tablets and cameras instead of a mouse and
joystick. Our approach is based on a modern low-cost hardware combined with
fingertips and speech recognition software. Positions of operator's hands or
fingertips control the positions of trapping beams in holographic optical
tweezers that provide optical manipulation with microobjects. We tested and
adapted two systems for hands position detection and gestures recognition –
Creative Interactive Gesture Camera and Leap Motion. We further enhanced the
system of Holographic Raman tweezers (HRT) by voice commands controlling the
micropositioning stage and acquisition of Raman spectra. Interface communicates
with HRT either directly by which requires adaptation of HRT firmware, or
indirectly by simulating mouse and keyboard messages. Its utilization in real
experiments speeded up the operator’s communication with the system cca. Two times
in comparison with the traditional control by the mouse and the keyboard.