Apparatus to enhance image signal distinction and method thereof
OwnerYeo-jin Kang, Young-jin Kwoninventors
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Abstract
An apparatus to enhance a distinction of image signals and a method thereof. The apparatus includes a de-interlacing unit to de-interlace input image signals using an interlaced scanning method and to output a de-interlaced image signal using a progressive scanning method, and a saw-tooth artifact processor to remove saw-tooth artifacts based on a diffusion value and a median value of the de-interlaced image signal, the artifacts being included in the de-interlaced image signal. The saw-tooth artifacts generated when neighboring pixels have a small difference are removed, and, at the same time, the detailed components of an image are represented effectively without being lost.
Claims23
An apparatus to enhance a distinction of image signals, the apparatus comprising:
- a de-interlacing unit to de-interlace input image signals using an interlaced scanning method and to output a de-interlaced image signal using a progressive scanning method;
- and
- a saw-tooth artifact processor to remove saw-tooth artifacts based on a diffusion value and a median value of the de-interlaced image signal, the saw-tooth artifacts being included in the de-interlaced image signal.
A method to enhance an image signal distinction, the method comprising:
- de-interlacing input image signals using an interlaced scanning method and outputting de-interlaced image signal using a progressive scanning method;
- and
- processing the saw-tooth artifacts in order to remove the saw-tooth artifacts based on a diffusion value and a median value of the de-interlaced image signal, the saw-tooth artifacts being included in the de-interlaced image signal.
An apparatus to remove saw-tooth artifacts from a de-interlaced image signal, the apparatus comprising:
- a calculating unit to calculate a diffusion value and a median value using a pixel value of a current pixel, and pixel values of pixels neighboring the current pixel;
- and
- a selector to output one of the pixel value of the current pixel, the diffusion value and the median value according to a first comparison of the pixel value of the current pixel with the pixel values of the pixels neighboring the current pixel, and a second comparison of the diffusion value and the median value.
A method of removing saw-tooth artifacts from a de-interlaced image signal including a plurality of pixel values, the method comprising:
- calculating a diffusion value and a median value using a pixel value of a current pixel, and pixel values of pixels neighboring the current pixel;
- and
- outputting one of the pixel value of the current pixel, the diffusion value and the median value according to a first comparison of the pixel value of the current pixel with the pixel values of the pixels neighboring the current pixel, and a second comparison of the diffusion value and the median value.
Dependencies are inferred from the claim text.