Deinterlacing technique
AssigneeATI International SRL
InventorsRichard Whitby Webb, Michael J. Lightstone
Life of this patent
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Abstract
An improved deinterlacing technique is provided. In one embodiment, a method for deinterlacing includes receiving an interlaced frame of data, the frame including a primary field and a secondary field, and deinterlacing the frame, the deinterlacing including computing an output pixel, PIXOUT, of the secondary field based on an input pixel, PIXIN, of the secondary field, a bottom pixel, BOTTOM, of the primary field, and a top pixel, TOP, of the primary field, in which PIXOUT is computed according to an input/output curve that converges to an average of BOTTOM and TOP. The deinterlacing technique in accordance with this embodiment minimizes spatial artifacts and efficiently generates each output pixel value from only three input pixels.
Claims20
A computer implemented method for deinterlacing, the computer implemented method comprising:
- receiving an interlaced frame of data, the frame comprising a primary field and a secondary field;
- and
- deinterlacing the frame, the step of deinterlacing comprising:
- computing an output pixel (PIXOUT) of the secondary field based on the values of an input pixel (PIXIN) of the secondary field, a bottom pixel (BOTTOM) of the primary field, BOTTOM being a pixel spatially below PIXIN, and a top pixel (TOP) of the primary field, TOP being a pixel spatially above PIXIN, wherein PIXOUT is computed according to an input/output curve that converges to an average of BOTTOM and TOP.
A computer program for deinterlacing embodied in a computer readable medium, the computer program comprising instructions for:
- receiving an interlaced frame of data, the frame comprising a primary field and a secondary field;
- and
- deinterlacing the frame, the deinterlacing comprising instructions for:
- computing an output pixel (PIXOUT) of the secondary field based on an input pixel (PIXIN) of the secondary field, a bottom pixel (BOTTOM) of the primary field, BOTTOM being a pixel spatially below PIXIN, and a top pixel (TOP) of the primary field, TOP being a pixel spatially above PIXIN, wherein PIXOUT is computed according to an input/output curve that converges to an average of BOTTOM and TOP.
Dependencies are inferred from the claim text.