Content-adaptive systems, methods and apparatus for determining optical flow
AssigneeQUALCOMM Incorporated
InventorsYingyong Qi, Ning Bi, Xuerui Zhang
Life of this patent
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Abstract
Embodiments include methods and systems which determine pixel displacement between frames based on a respective weighting-value for each pixel or a group of pixels. The weighting-values provide an indication as to which pixels are more pertinent to optical flow computations. Computational resources and effort can be focused on pixels with higher weights, which are generally more pertinent to optical flow determinations.
Claims34
A method of determining pixel displacement between frames comprising:
- determining a respective weighting-value for each of a first plurality of pixels of a frame, wherein each weighting-value is based at least in part on the relationship of an attribute of a particular one of the pixels with the corresponding attributes of other pixels near the particular pixel, the attribute and the corresponding attributes each including a classification for the associated pixel;
- and
- determining an optical flow indicator of pixel displacement between the frame and another frame based at least in part upon the weighting-value of at least one pixel of the first plurality of pixels.
A non-transitory computer-readable storage medium having stored thereon instructions for determining pixel displacement between frames that when executed cause an apparatus to:
- determine a respective weighting-value for each of a first plurality of pixels of a frame, wherein each weighting-value is based at least in part on the relationship of an attribute of a particular one of the pixels with the corresponding attributes of other pixels near the particular pixel, the attribute and the corresponding attributes each including a classification for the associated pixel;
- and
- determine an optical flow indicator of pixel displacement between the frame and another frame based at least in part upon the weighting-value of at least one pixel.
An apparatus configured to determine pixel displacement between frames comprising:
- means for determining a respective weighting-value for each of a first plurality of pixels, wherein each weighting-value is based at least in part on the relationship of an attribute of a particular pixel with the corresponding attributes of other pixels near the particular pixel, the attribute and the corresponding attributes each including a classification for the associated pixel;
- and
- means for determining an optical flow indicator of pixel displacement between two frames based at least in part upon the weighting-value of at least one pixel.
An apparatus configured to determine pixel displacement between frames comprising:
- a memory;
- and
- a processor configured to:
- determine a respective weighting-value for each of a first plurality of pixels of a frame, wherein each weighting-value is based at least in part on the relationship of an attribute of a particular one of the pixels with the corresponding attributes of other pixels near the particular pixel, the attribute and the corresponding attributes each including a classification for the associated pixel;
- and
- determine an optical flow indicator of pixel displacement between the frame and another frame based at least in part upon the weighting-value of at least one pixel.
Dependencies are inferred from the claim text.