Eye tracking systems

我的研究项目的长期目标是开发临床上有用的非侵入性方法，记录和分析婴儿，儿童和成人的正常和异常眼球运动和视觉扫描模式。我的团队正在开发的系统和方法是针对眼科学、神经病学和精神病学的研究进行优化的。不需要用户校准程序（免校准）的远程眼动跟踪系统具有有限的跟踪范围，并且无法在实验室外可靠地运行（由于阳光干扰）。我们计划开发分布式、免校准的眼动跟踪系统，其跟踪范围更广，可以在实验室内外可靠地运行。这一发展是基于我的团队最近的工作，该工作为免校准凝视估计系统和估计3D空间中眼睛特征的方向和位置的新方法奠定了理论基础。在接下来的五年里，我们计划使用先进的眼动追踪系统来客观准确地测量婴幼儿的眼位偏差。早期发现眼睛错位可以支持早期诊断和治疗，这有助于最大限度地发挥视觉系统的潜力。室内-室外（通用）眼动跟踪系统将被纳入辅助通信设备，使严重运动障碍的个人能够通过使用他们的眼球运动进行通信。我们正在开发的分析视觉扫描模式的方法将用于研究情绪障碍的潜意识替代品，注意力偏差，这可能为抑郁症患者的治疗效果提供早期指标。参加我的研究项目的研究生有很好的机会接受跨学科研究的培训，并发展信号处理，生物信号检测和估计的专业知识，控制眼球运动和视觉。

The long-term objectives of my research program are to develop clinically useful non-invasive methods of recording and analyzing normal and abnormal eye movements and visual scanning patterns, in infants, children and adults. The systems and methods that my group is developing are optimized for studies in ophthalmology, neurology and psychiatry. Remote eye tracking systems that do not require user calibration procedures (calibration free) have a limited tracking range and cannot operate reliably outside the laboratory (due to sunlight interference). We plan to develop distributed, calibration-free eye tracking systems with extended tracking ranges that can operate reliably both inside and outside the laboratory. The development is based on recent work by my group that established the theoretical foundations for calibration-free gaze estimation systems and novel methods to estimate the orientation and position of eye-features in 3D-space. In the next five years we plan to use our advanced eye-tracking systems to measure objectively and accurately eye misalignment in infants and young children. Early detection of eye-misalignment can support early diagnosis and treatment that can help maximize the potential of the visual system. The indoor-outdoor (universal) eye-tracking system will be incorporated into an assistive communication device to enable severely motor impaired individuals to communicate through the use of their eye movements. The methods that we are developing to analyze visual scanning patterns will be used to study a subconscious surrogate of mood disorders, attention bias, that might provide an early indication for treatment efficacy in patients with depression.Graduate students who participate in my research program have excellent opportunities to be trained in interdisciplinary research and to develop expertise in signal processing, detection and estimation of biological signals, control of eye movements and vision.