Categorizing the Visual Environment and Analyzing the Visual Attention of Dogs
This work addresses the lack of datasets and analysis for dog visual attention, which is important for fields like animal behavior and human-dog interaction, but it is incremental as it applies existing methods to a new domain.
The researchers tackled the problem of understanding what dogs look at in everyday outdoor environments by collecting 11,698 gazes from 11 dogs using head-mounted eye tracking, and they found that dogs fixate more on buses, plants, pavement, and construction equipment with few individual differences.
Dogs have a unique evolutionary relationship with humans and serve many important roles e.g. search and rescue, blind assistance, emotional support. However, few datasets exist to categorize visual features and objects available to dogs, as well as how dogs direct their visual attention within their environment. We collect and study a dataset with over 11,698 gazes to categorize the objects available to be gazed at by 11 dogs in everyday outdoor environments i.e. a walk around a college campus and urban area. We explore the availability of these object categories and the visual attention of dogs over these categories using a head mounted eye tracking apparatus. A small portion (approx. 600 images or < 20% of total dataset) of the collected data is used to fine tune a MaskRCNN for the novel image domain to segment objects present in the scene, enabling further statistical analysis on the visual gaze tendencies of dogs. The MaskRCNN, with eye tracking apparatus, serves as an end to end model for automatically classifying the visual fixations of dogs. The fine tuned MaskRCNN performs far better than chance. There are few individual differences between the 11 dogs and we observe greater visual fixations on buses, plants, pavement, and construction equipment. This work takes a step towards understanding visual behavior of dogs and their interaction with the physical world.