| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for sub-pixel value interpolation in the encoding and decoding of data. <P>SOLUTION: The method includes: (a) when values for sub-pixels at half unit horizontal and unit vertical locations and unit horizontal and half unit vertical locations are required, interpolating such values directly using weighted sums of pixels residing at unit horizontal and unit vertical locations; (b) when values for sub-pixels at half unit horizontal and half unit vertical locations are required, interpolating such values directly using a weighted sum of values for sub-pixels residing at half unit horizontal and unit vertical locations; (c) when values for sub-pixels at quarter unit horizontal and quarter unit vertical locations are required, interpolating such values by taking the average of at least one pair of a first pair of values of a sub-pixel located at a half unit horizontal and unit vertical locations, and a sub-pixel located at a unit horizontal and half unit vertical location and a second pair of values of a pixel located at a unit horizontal and unit vertical location, and a sub-pixel located at a half unit horizontal and half unit vertical location. <P>COPYRIGHT: (C)2011,JPO&INPIT |
