Visual Parsing After Recovery From Blindness
Tóm tắt
How the visual system comes to bind diverse image regions into whole objects is not well understood. We recently had a unique opportunity to investigate this issue when we met three congenitally blind individuals in India. After providing them treatment, we studied the early stages of their visual skills. We found that prominent figural cues of grouping, such as good continuation and junction structure, were largely ineffective for image parsing. By contrast, motion cues were of profound significance in that they enabled intraobject integration and facilitated the development of object representations that permitted recognition in static images. Following 10 to 18 months of visual experience, the individuals' performance improved, and they were able to use the previously ineffective static figural cues to correctly parse many static scenes. These results suggest that motion information plays a fundamental role in organizing early visual experience and that parsing skills can be acquired even late in life.
Từ khóa
Tài liệu tham khảo
Gregory R.L., 1963, Recovery from early blindness: A case study
Johnson S.P., 2003, The development of face processing, 3
Kanizsa G., 1979, Organization in vision: Essays on Gestalt perception
Koffka K., 1935, Principles of Gestalt psychology
Marr D., 1982, Vision: A computational investigation into the human representation and processing of visual information
Mumford D., Shah J. (1985, June). Boundary detection by minimizing functionals. Paper presented at the 2nd IEEE Conference on Computer Vision and Pattern Recognition, San Francisco, CA.
Shi J., Malik J. (1997, June). Normalized cuts and image segmentation. Paper presented at the 11th IEEE Conference on Computer Vision and Pattern Recognition, San Juan, Puerto Rico.
Sinha P., Object categorization: Computer and human vision perspectives
Tu Z., Chen X., Yuille A.L., Zhu S.C. (2003, October). Image parsing: Unifying segmentation, detection, and recognition. Paper presented at the 9th IEEE International Conference on Computer Vision, Nice, France.
Valvo A., 1971, Sight restoration after long-term blindness: The problems and behavior patterns of visual rehabilitation
Von Senden M., 1960, Space and sight: The perception of space and shape in the congenitally blind before and after operation