Method, apparatus and integrated circuit for improving image sharpness
AssigneePanasonic Corporation
InventorsChih-Jung Lin, Pei-Lin Hoi
Life of this patent
Estimating the term…
Abstract
An apparatus for improving image sharpness includes a pixel detector that labels each of pixels in an image as one of an edge/texture type and a non-edge/texture type, a pixel type determiner that classifies each of the pixels that are labeled as the edge/texture type as one of a border point type pixel, a transition point type pixel, and a peak point type pixel, and a filter. The filter includes a shrinking/expanding filter and a high boost filter, the shrinking/expanding filter filtering the border point type pixels, and the high boost filter subsequently filtering the peak point type pixels and then filtering the transition point type pixels.
Claims15
A method for improving image sharpness, comprising:
- detecting each pixel of an image;
- labeling each pixel in the image as one of an edge/texture type and a non-edge/texture type;
- determining a type of pixel by classifying each labeled pixel as the edge/texture type as one of a border point type, a transition point type, and a peak point type;
- and
- using a shrinking/expanding filter to filter each border point type pixel, and subsequently using a high boost filter to first filter each peak point type pixel and then filter each transition point type pixel to sharpen the image.
An apparatus for improving image sharpness, comprising:
- a pixel detector that detects each pixel of an image;
- a labeler that labels each of the pixels in the image as one of an edge/texture type and a non-edge/texture type;
- a pixel type determiner that classifies each of the pixels that are labeled as the edge/texture type as one of a border point type pixel, a transition point type pixel, and a peak point type pixel;
- and
- a filter, including a shrinking/expanding filter and a high boost filter, said shrinking/expanding filter filtering the border point type pixels, said high boost filter subsequently filtering the peak point type pixels and then filtering the transition point type pixels;
- wherein at least one of the pixel detector, the pixel type determiner and the filter comprises a processor.
An integrated circuit for improving image sharpness, comprising:
- a pixel detector that detects each pixel in an image;
- a labeler that labels each pixel of the image as one of an edge/texture type and a non-edge/texture type;
- a pixel type determiner that classifies each of the pixels that are labeled as the edge/texture type as one of a border point type pixel, a transition point type pixel, and a peak point type pixel;
- and
- a filter including a shrinking/expanding filter and a high boost filter, said shrinking/expanding filter filtering the border point type pixels, said high boost filter subsequently filtering the peak point type pixels and then filtering the transition point type pixels.
Dependencies are inferred from the claim text.