发明名称 |
Classifying user activities using eye fixation clustering, fixation features, and regions of interest |
摘要 |
A computing device classifies user activities. The device receives eye tracking data for a person viewing a page having multiple contiguous regions. The eye tracking data comprises a temporal sequence of fixations, where each fixation has a duration and a location. The device partitions the fixations into clusters, where each cluster has a consecutive sub-sequence of the fixations. The device assigns a provisional user activity label to each fixation based on a set of characteristics of the fixation. The device also groups together consecutive fixations that have the same label to partition the fixations into groups. For each group that matches a respective cluster, the device retains the provisional label assignment as a final user activity label assigned to each of the fixations in the respective group. The device also reconciles non-matching groups with non-matching clusters, using the regions, to form a set of non-overlapping modified groups. |
申请公布号 |
US9384420(B2) |
申请公布日期 |
2016.07.05 |
申请号 |
US201614995161 |
申请日期 |
2016.01.13 |
申请人 |
FUJI XEROX CO., LTD. |
发明人 |
Qvarfordt Pernilla |
分类号 |
G06K9/00;G06K9/62;G06T7/00 |
主分类号 |
G06K9/00 |
代理机构 |
Morgan, Lewis & Bockius LLP |
代理人 |
Morgan, Lewis & Bockius LLP |
主权项 |
1. A method of classifying user activities, comprising:
at a computer system having one or more processors and memory:
receiving eye tracking data for a person viewing a page having a plurality of distinct contiguous regions, the eye tracking data comprising a sequence of fixations ordered temporally, wherein each respective fixation corresponds to a plurality of respective measured gaze points, and wherein each respective fixation has a respective duration and location based on the corresponding respective measured gaze points;partitioning the fixations into a plurality of clusters, wherein each cluster comprises a consecutive sub-sequence of the fixations in the temporal order;assigning a provisional user activity label to each fixation based on a set of characteristics of the fixation, wherein the user activity labels are selected from a predefined set of user activity labels;grouping together consecutive fixations that have the same assigned provisional user activity label to partition the fixations into a plurality of groups;for each respective group that matches a respective cluster, retaining the provisional user activity label assignment as a final user activity label assigned to each of the fixations in the respective group; andreconciling non-matching groups with non-matching clusters, using the regions, to form a set of non-overlapping modified groups consisting of fixations from the non-matching groups, wherein each fixation in a modified group is assigned a same final user activity label selected from the predefined set of user activity labels. |
地址 |
Tokyo JP |