Method, apparatus and integrated circuit for improving image sharpness
AssigneePanasonic Corporation
InventorsChih-Jung Lin, Pei-Lin Hou
Life of this patent
Estimating the term…
Abstract
In a method, apparatus and integrated circuit for improving image sharpness, the method includes the following steps: (a) labeling each of pixels in an image as one of an edge/texture type and a non-edge/texture type; (b) classifying each of the pixels that are labeled as the edge/texture type into one of a border point type, a transition point type, and a peak point type; and (c) using a shrinking/expanding filter to filter the pixels of the border point type, and subsequently using a high boost filter to first filter the pixels of the peak point type and then filter the pixels of the transition point type to sharpen the image.
Claims15
A method for improving image sharpness, comprising the following steps:
- (a) labeling each of pixels in an image as one of an edge/texture type and a non-edge/texture type;
- (b) classifying each of the pixels that are labeled as the edge/texture type as one of a border point type, a transition point type, and a peak point type;
- and
- (c) using a shrinking/expanding filter to filter the pixels of the border point type, and subsequently using a high boost filter to first filter the pixels of the peak point type and then filter the pixels of the transition point type to sharpen the image.
An apparatus for improving image sharpness, comprising:
- a pixel detecting unit for labeling each of pixels in an image as one of an edge/texture type and a non-edge/texture type;
- a pixel type determining unit for classifying each of the pixels that are labeled as the edge/texture type as one of a border point type, a transition point type, and a peak point type;
- and
- a filter unit including a shrinking/expanding filter and a high boost filter, said shrinking/expanding filter being used to filter the pixels of the border point type, said high boost filter being subsequently used to first filter the pixels of the peak point type and then filter the pixels of the transition point type.
An integrated circuit for improving image sharpness, comprising:
- a pixel detecting unit for labeling each of pixels in an image as one of an edge/texture type and a non-edge/texture type;
- a pixel type determining unit for classifying each of the pixels that are labeled as the edge/texture type as one of a border point type, a transition point type, and a peak point type;
- and
- a filter unit including a shrinking/expanding filter and a high boost filter, said shrinking/expanding filter being used to filter the pixels of the border point type, said high boost filter being subsequently used to first filter the pixels of the peak point type and then filter the pixels of the transition point type.
Dependencies are inferred from the claim text.