Spatial resolution of video images

Details Spatial resolution of video images Spatial resolution of video images

2007-04-17

2007-04-17

Natnael, Paulos (Department: 2622)

Television

Format conversion

Line doublers type

Reexamination Certificate

active

10493793

ABSTRACT:
The invention relates to a method and a device to increase the resolution of an image by interpolating along edges of the image. Edges are detected and their direction is calculated (10). The interpolation (12) of new pixels is carried out along the direction of the edges. According to the invention, a pre-filter (8) is used with a high-pass filtering in the direction in which new pixels are interpolated, and a low-pass filtering in another direction.

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“Progressive Scan Conversion using Edge Information”, T. Doyle et al., Signal Processing of HDTV, II, 1990, pp. 711-721.

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