PDF(Pubmed)
Abstract：
Eye movements while reading with screen magnification (which requires manual scrolling to center the magnified portion of the screen within the viewport) pose interpretation challenges. Standard representations in terms of alternating fixations and saccades don\'t apply to this case. This is because, during scrolling, eyes often track a moving text element, generating a movement akin to smooth pursuit. We propose a new representation that uses information from the mouse (which the reader uses to move the center of magnification) to undo the effect of magnification and scrolling. After this \"compensation\" operation, gaze tracks can again be described as alternating fixations and saccades. We present an analysis of gaze tracks obtained by applying this transformation on an existing dataset, recorded from low vision readers using two modalities of screen magnification. This analysis highlights similarities and differences in terms of dynamic properties of compensated gaze tracks vis-à-vis gaze during regular reading.
摘要：
在用屏幕放大(这需要手动滚动以使屏幕的放大部分在视口内居中)进行阅读时的眼睛移动带来解释挑战。交替注视和扫视的标准表述不适用于这种情况。这是因为,在滚动过程中，眼睛经常跟踪移动的文本元素，产生类似于平稳追求的运动。我们提出了一种新的表示，它使用鼠标中的信息（读者使用鼠标来移动放大中心）来消除放大和滚动的影响。在此“补偿”操作之后，凝视轨迹可以再次描述为交替的注视和扫视。我们对通过在现有数据集上应用此转换获得的凝视轨迹进行了分析，使用两种屏幕放大模式从低视力阅读器记录。此分析突出了在常规阅读过程中补偿凝视轨迹相对于凝视的动态特性方面的异同。
