Television – Format conversion – Changing number of lines for standard conversion
Patent
1997-10-14
2000-10-17
Flynn, Nathan
Television
Format conversion
Changing number of lines for standard conversion
348459, 348448, 348441, 348699, H04N 701, H04N 1120, H04N 978
Patent
active
061339571
ABSTRACT:
A method or device for increasing the resolution of an image generates additional pixels in the image using interpolation. Various tests are performed for each additional pixel to determine whether conditions render the interpolation direction ambiguous or uncertain. In a television image, for example, an interpolation direction is derived for each additional pixel from a weighted combination of a vertical direction and a best-choice diagonal direction. If a potential interpolation condition cannot be determined with a high level of confidence, the weighted combination favors the vertical direction.
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Doyle, et al., "Progressive Scan Conversion Using Edge Information," Signal Processing of HDTV, Elsevier Science Publishers B. V., 1990, pp. 711-721.
Middelhoek, "Transformational Design of a Direction Detector for the Progressive Scan Conversion Processor," University of Twente, Enshede, The Netherlands, Dec. 1, 1994, chapters 1 and 2.
Faroudja Laboratories, Inc.
Flynn Nathan
Lathrop David N.
Srivastava Vivek
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