Method and apparatus for detecting interpolation line

Details Method and apparatus for detecting interpolation line Method and apparatus for detecting interpolation line

1995-04-18

1997-12-30

Kuntz, Curtis

Image analysis

Image enhancement or restoration

Edge or contour enhancement

382266, 348448, 358428, G06K 938

Patent

active

057039682

ABSTRACT:
A level difference of an upper pixel on an upper scanning line placed over an attentional pixel and a lower pixel on a lower scanning line placed under the attentional pixel, a level difference of the upper pixel and a lower left pixel, a level difference of the upper pixel and a lower right pixel, and a level difference of the lower pixel and an upper left pixel and a level difference of the lower pixel and an upper right pixel are derived. These level differences are compared with each other, and a line having a smallest level difference is detected and an effective interpolation line information is generated. Moreover, the level difference of the upper pixel and lower pixel is compared with the level difference of the upper right pixel and lower left pixel, and a smaller is set as a first interpolation line. In a similar manner, a second interpolation line is derived, and an ultimate interpolation line is selected from the first interpolation line, the second interpolation line and a line connecting the upper pixel and lower pixel on the basis of the effective interpolation line information.

REFERENCES:
patent: 5347599 (1994-09-01), Yamashita et al.

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