Method of edge based interpolation

Details Method of edge based interpolation Method of edge based interpolation

2007-07-17

2007-07-17

Tran, Trang U. (Department: 2622)

Television

Format conversion

Line doublers type

C348S441000, C348S452000, C348S458000

Reexamination Certificate

active

09988934

ABSTRACT:
A method for detecting an edge and generating an interpolated edge pixel at a target pixel position between two lines of an interlace scan image first determines gradient intensities in the horizontal and vertical directions and then calculates the angle of the edge by comparing the gradient intensities. The interpolated pixel value is calculated from samples in the interlace scan image that lie along the identified angle and are proximate to the target pixel position. The method represents the gradient strengths and the difference between them as bit strings; locates the most significant non-zero bit in the larger gradient value; divides the value of the corresponding bit position in the difference string, and a predetermined number of following positions, by increasing powers of 2; sums the results; subtracts the sum from 1.0 and uses the inverse tangent function to calculate the angle of the edge.

REFERENCES:
patent: 4731648 (1988-03-01), Bernard et al.
patent: 4774581 (1988-09-01), Shiratsuchi
patent: 5051826 (1991-09-01), Ishii et al.
patent: 5373322 (1994-12-01), Laroche et al.
patent: 5631706 (1997-05-01), Tsunashima
patent: 5638139 (1997-06-01), Clatanoff et al.
patent: 5793435 (1998-08-01), Ward et al.
patent: 5805217 (1998-09-01), Lu et al.
patent: 5886745 (1999-03-01), Muraji et al.
patent: 5943099 (1999-08-01), Kim
patent: 6037986 (2000-03-01), Zhang et al.
patent: 6055018 (2000-04-01), Swan
patent: 6229578 (2001-05-01), Acharya et al.
patent: 6396543 (2002-05-01), Shin et al.
patent: 6408109 (2002-06-01), Silver et al.
patent: 6614484 (2003-09-01), Lim et al.
patent: 6707937 (2004-03-01), Sobel et al.
patent: 6731342 (2004-05-01), Shin et al.
patent: 6810156 (2004-10-01), Itoh
patent: 0 361 558 (1990-04-01), None
patent: 0 785 683 (1997-07-01), None

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