Image processing method and apparatus for detecting an edge of an object within an image
AssigneeSamsung Electronics Co., Ltd.
InventorsHee-Chan Park, Sung-Dae Cho, Min-Kyu Park, Jin-Ho Kim, Ji-Hye Kim, Yun-Je Oh
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Abstract
An image processing method and apparatus capable of easily detecting an edge of an object from an input image, in which the edge is detected using one step, without a pre-processing step, and a complicated trigonometric function is not used for gradient detection. The image processing method includes setting a window within an input image, analyzing the window to determine directions of edges of objects within the image included in the window, detecting edge information including the edge directions, and processing and outputting the window using the edge information.
Claims10
An image processing method in an image processing apparatus, the method comprising:
- setting, by the image processing apparatus, a window within an input image;
- analyzing the window to determine edges of objects within an image included in the window;
- calculating a value of directional projection of each direction of the window;
- calculating values of the directional projections exhibiting a maximum difference among differences between the values of the directional projections obtained based on the directions of the window;
- detecting directions of the edges using the values of the directional projections exhibiting the maximum difference;
- generating edge information including the edge directions;
- and
- processing and outputting the window using the edge information.
An image processing apparatus comprising:
- a window setting unit for setting a window within an input image;
- an edge information detecting unit for analyzing the window to determine edges of objects within an image included in the window, calculating a value of directional projection of each direction of the window, calculating values of the directional projections exhibiting a maximum difference among differences between the values of the directional projections obtained based on the directions of the window, detecting edge directions of the edges using the values of the directional projections exhibiting the maximum difference, and generating edge information including the edge directions;
- and
- an image processing unit for processing and outputting the window using the edge information.
Dependencies are inferred from the claim text.