Neurophysiological Features of Human Visual System in Augmented Photogrammetric Technologies

Humans perceive the environment through sensory inputs which the brain processes appropriately for the stimulus. This is particularly true of visual cognition and interpretation of geospatial images. The virtual scene, imagined in the brain, is inherently related to neuro-physiological features of the human visual system and differs from the real world. The brain processes visual input by concentrating on specific components of the entire sensory realm so that the interesting features of a scene may be examined with greater attention to detail than peripheral stimuli. Visual attention, responsible for regulating sensory information to sensory channels of limited capacity, serves as a “selective filter”, interrupting continuously the process of ocular observations by visual fixations. In this paper we analyze specific features of the human visual system involved with geospatial imagery analysis using tracking eyes movements and the requirements for hardware, suitable for corresponding treatment of geospatial images in augmented photogrammetric systems. The research encompasses the impact of spatial and temporal resolution of an eye-tracking system on accuracy of fixation identification from eye-tracking protocols. * Corresponding author: Guennadi Guienko, PO BOX 11412, Torrance, CA, 90510