Method and apparatus for edge enhancement considering singular points
AssigneeSamsung Electronics Co., Ltd.
InventorsYon-sook Jung, Bo-gun Park
Life of this patent
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Abstract
A method of and apparatus for edge enhancement considering singular points are provided. The method of edge enhancement includes: determining a first gain from the input image; detecting a singular point distinguishable from an edge from among pixels of the input image; based on the detection result of singular points, determining a second gain for edge enhancement processing; and multiplying the first gain by the second gain to generate a resulting edge-enhanced image.
Claims32
A method of edge enhancement by considering a singular point, the method comprising:
- determining a first gain from the input image;
- detecting a singular point distinguishable from an edge from among pixels of the input image;
- based on the detection result of singular points, determining a second gain for edge enhancement processing;
- and
- multiplying the determined first gain by the determined second gain;
- and
- adding the result of the multiplication of the first gain by the second gain to the input image to generate a resulting edge-enhanced image.
An apparatus for edge enhancement by considering a singular point, the apparatus comprising:
- an first gain determination unit determining a first gain from the input image;
- a singular point detection unit detecting a singular point distinguishable from an edge from among pixels of the input image;
- a second gain determination unit, based on the detection result of singular points, determining a second gain for edge enhancement processing;
- and
- a resulting first gain determination unit multiplying the first gain by the second gain and adding the input image to generate a resulting edge-enhanced image.
A method of detecting a singular point comprises:
- determining the mean brightness value of pixels in a predetermined area including a current pixel of an input image;
- determining the brightness difference between each pixel in the predetermined area and the current pixel;
- determining a maximum threshold and a minimum threshold by using the mean brightness value of the pixels in the predetermined area and the brightness difference information with the current pixel;
- and
- determining whether or not the current pixel is a singular point, by using the brightness difference, the maximum threshold and the minimum threshold.
Dependencies are inferred from the claim text.