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Related Concept Videos

Depth Perception and Spatial Vision01:15

Depth Perception and Spatial Vision

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Depth perception is the ability to perceive objects three-dimensionally. It relies on two types of cues: binocular and monocular. Binocular cues depend on the combination of images from both eyes and how the eyes work together. Since the eyes are in slightly different positions, each eye captures a slightly different image. This disparity between images, known as binocular disparity, helps the brain interpret depth. When the brain compares these images, it determines the distance to an object.
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Assessing Binocular Central Visual Field and Binocular Eye Movements in a Dichoptic Viewing Condition
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Stereoscopic Distance Filtering Plus Thermal Imaging Glasses Design.

Paul L Gibson, Daniel S Hedin, Gregory J Seifert

    Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
    |September 10, 2022
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    Summary

    This study introduces advanced eyewear with stereoscopic and thermal cameras to aid individuals with visual impairments. The innovative design enhances object detection and spatial awareness for better low vision assistance.

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    Area of Science:

    • Biomedical Engineering
    • Computer Vision
    • Ophthalmology

    Background:

    • Visual impairment affects millions globally, necessitating advanced assistive technologies.
    • Current low vision aids have limitations in object detection and spatial perception.
    • Integrating advanced imaging and processing can enhance visual assistive devices.

    Purpose of the Study:

    • To develop and evaluate novel eyewear integrating stereoscopic and thermal imaging for enhanced visual assistance.
    • To improve the utility of blind and low vision aids through advanced image processing.
    • To assess the clinical relevance of the developed eyewear for various visual prostheses and aids.

    Main Methods:

    • Development of eyewear incorporating stereoscopic and thermal imaging cameras.
    • Implementation of image processing algorithms to simplify complex scenes and highlight objects of interest.
    • Design of a 3D printed titanium structure to maintain precise camera orientation for calibrated distance filtering.

    Main Results:

    • The eyewear successfully highlights important objects (e.g., people, animals) using thermal imaging.
    • Stereoscopic imaging effectively filters background elements beyond a specified distance.
    • The mechanical design ensures stable camera orientation, crucial for calibrated distance filtering.
    • Demonstrated utility for users of retinal prostheses.

    Conclusions:

    • The developed eyewear significantly enhances perceived spatial resolution for users of visual prostheses.
    • This technology offers improved functionality for implantable retinal prostheses, visual cortical prostheses, and wearable low vision aids.
    • The integration of stereoscopic and thermal imaging presents a promising advancement in assistive technology for visual impairment.