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- W2022101322 abstract "Earlier studies of the human vision system suggest that a complex object may be recognized from the qualitative features associated with its boundary. Since the human vision system uses qualitative features for object recognition, it is extremely robust to deformation caused by noise, obstruction, scale change, or optical distortion. We considered various qualitative descriptors for digital images. The descriptors developed in this research are based on the estimated curvature function from digital boundaries and can discriminate features such as straightness of a contour segment, perpendicularity of two contour segments, parallelness of two straight contour segments, parallelness of two curved contour segments in a global sense, and the direction of convergence if two straight contour segments are not parallel. We demonstrated that the qualitative descriptors developed in this paper can be applied for identification of elementary shapes, such as cylinders, bricks, cones, etc. We also discussed the recognition of more complex shapes after decomposing them into simpler components." @default.
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- W2022101322 date "1992-02-01" @default.
- W2022101322 modified "2023-09-27" @default.
- W2022101322 title "<title>Qualitative descriptors for digital contour segments (Invited Paper)</title>" @default.
- W2022101322 doi "https://doi.org/10.1117/12.135155" @default.
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