Method for sub-pixel value interpolation

Details Method for sub-pixel value interpolation Method for sub-pixel value interpolation

2007-10-09

2007-10-09

An, Shawn S. (Department: 2621)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

C375S240160, C375S240120, C375S240140, C375S240150, C382S238000, C382S236000, C382S239000

Reexamination Certificate

active

11090717

ABSTRACT:
A method of interpolation in video coding in which an image comprising pixels arranged in rows and columns and represented by values having a specified dynamic range, the pixels in the rows residing at unit horizontal locations and the pixels in the columns residing at unit vertical locations, is interpolated to generate values for sub-pixels at fractional horizontal and vertical locations, the method comprising: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 calculated according to step (a); andc) 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 location, 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.

REFERENCES:
patent: 4937666 (1990-06-01), Yang
patent: 5452377 (1995-09-01), Igarashi
patent: 5488419 (1996-01-01), Hui et al.
patent: 5521642 (1996-05-01), Park
patent: 5568597 (1996-10-01), Nakayama et al.
patent: 5570436 (1996-10-01), Fukushima et al.
patent: 5844616 (1998-12-01), Collet et al.
patent: 5901248 (1999-05-01), Fandrianto et al.
patent: 6219464 (2001-04-01), Greggain et al.
patent: 6252576 (2001-06-01), Nottingham
patent: 6950469 (2005-09-01), Karczewicz et al.
patent: 2002/0064229 (2002-05-01), Nakaya
patent: 0576290 (1993-12-01), None
patent: 2205707 (1988-12-01), None
patent: WO99/04574 (1999-01-01), None
FPM 21.3, “An Interpolator for HD-MAC Decoder”, Chao et al.
“Directional Interpolation for Magnetic Resonance Angiography Data”, Mehran Mashfeghi, IEEE Transactions on Medical Imaging, vol. 12, No. 2, Jun. 1993.
Document VCEG-L20, “Complexity Reduced Motion Compensated Prediction with 1/8-pel Displacement Vector Resolution”, ITU, Study Group 16.
English translation of Japanese publication No. Hei 6-14739.
Japanese Patent Document No. JP 62-039920.

Affiliated with

Also associated with

Rating

Method for sub-pixel value interpolation does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for sub-pixel value interpolation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for sub-pixel value interpolation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3858239