Patent ID: 11889101
Assignee: TEXAS INSTRUMENTS INCORPORATED
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 5:
6. A system comprising:
a processor configured to:
divide a coding unit (CU) of a picture into a first motion estimation region (MER) and a second MER, the CU larger in size than the first MER and the second MER;
perform one or more first motion searches for the first MER and the second MER to determine a first motion vector (MV) for the first MER and a second MV for the second MER, wherein:
the one or more first motion searches are based on a first cost to predict the first MV and a second cost to predict the second MV;
the one or more first motion searches includes a first predictor search, a first integer-pel search, and a first fractional-pel search based on a first set of search points of the first MV;
the first fractional-pel search includes an area bounded by eight neighbor integer-pel positions around a best integer-pel position determined from the first integer-pel search; and
the first cost and the second cost are determined based on a penalty component and a distortion component;

perform one or more second motion searches for the CU to determine a selected MV from one of the first MV and the second MV based on which one of the first cost and the second cost is lower;
perform a sub-pel refinement using the selected MV to determine a refined MV; and
encode the CU in the picture using the refined MV; and

memory communicatively associated with the processor and configured to store a first candidate list generated based on a first number of the one or more first motion searches and a second candidate list generated based on a second number of the one or more second motion searches.