Adaptive group of pictures (agop) structure determination

A computer program product comprising computer-readable medium comprising instructions for causing a computer to:

• calculate first order cross-correlations between image information within pairs of frames included in a video sequence;
• calculate second order cross-correlations between pairs of the first order cross-correlations;
• and
• determine a picture type for each of the frames included in the video sequence based on the first and second order cross-correlations.

An integrated circuit device for processing digital image data comprising at least one processor that is configured to:

• calculate first order cross-correlations between image information within pairs of frames included in a video sequence;
• calculate second order cross-correlations between pairs of the first order cross-correlations;
• and
• determine a picture type for each of the frames included in the video sequence based on the first and second order cross-correlations.

A system comprising:

• a coding device including a group of pictures (GOP) partitioner that partitions video data into GOP structures including a plurality of frames, and an adaptive group of pictures (AGOP) structure determination module that determines picture types for the frames included in the GOP structures in real-time;
• a correlation-based AGOP structure determination module positioned external to the coding device that determines benchmark picture types for the frames included in the GOP structures based on first order cross-correlations between image information within pairs of frames and second order cross-correlations between pairs of first order cross-correlations;
• and
• a benchmark comparator that compares the picture types against the benchmark picture types to determine accuracy of the AGOP structure determination module integrated in the coding device.