In this paper, we present the first realisation and experimentation of a new eye tracking system using an infrared (iR) laser pointer embedded into a wireless smart contact lens. We denote this contact lens prototype as the cyclops lens, in reference to the famous hero of the X-Men comics. The full eye tracker device combines the smart contact lens and its eyewear, which provides a primary source of energy and the beam detection system. We detail the assembling and encapsulation process of the main functionalities into the contact lens and present how a gaze tracking system is achieved, compared to existing conventional eye-tracking ones. Finally, we discuss future technical improvements.
Most eye trackers nowadays are video-based, which allows for a relatively simple and non-invasive approach but also imposes several constraints in terms of necessary computing power and conditions of use (e.g., lighting, spectacles, etc.). We introduce a new eye tracker using a scleral lens equipped with photodiodes and an eyewear with active illumination. The direction of gaze is obtained from the weighted average of photocurrents (centroid) and communicated through an optical link. After discussing the optimum photodiodes configuration (number, layout) and associated lighting (collimated, Lambertian), we present prototypes demonstrating the high performances possibilities (0.11° accuracy when placed on an artificial eye) and wireless optical communication.
The Protein Information Management System (PiMS) is a well developed tool for following the molecular biology steps from construct design through to purified protein. xtalPiMS, built on PiMS, is a tool for managing crystallization experiments, and in particular the large numbers of images that can be produced by automated imaging systems. Like PiMS, xtalPiMS is a web-based application that runs on widely-available open source software; xtalPiMS is accessed using a web browser, typically requiring no additional software to be installed on the client. Current work on xtalPiMS aims to close the toolchain gap between the crystallization image of interest in xtalPiMS and the shipment of the crystal to the synchrotron with ISPyB, by providing a highly customizable and flexible method for recording crystal treatments. This work will provide a continuous record chain from protein sequence to X-ray diffraction images. xtalPiMS is available under the same terms as PiMS. To try xtalPiMS, visit http://pimstrak1.dl.ac.uk:8080/xtal/loginhome.jsp (user name "demo", password "demo").
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