An Efficient Hierarchical Video Coding Scheme Combining Visual Perception Characteristics

Table 1

The hierarchical video coding algorithm based on visual perception characteristics.

Coding scheme	Intraprediction mode decision [19]		Interprediction mode decision [20]		ME search range [22]	Number of reference frames
	Intra 16×16	Intra 4×4	Inter 16	Inter 8
Frame 𝑃
ROI(𝑥,𝑦)=3	Intra 16×16	Intra 4×4	—	Inter 8	Layers 2,3, 4	5
ROI(𝑥,𝑦)=2	—	—	Inter 16	—	Layers 1, 2, 3	3
ROI(𝑥,𝑦)=1	—	—	—	Inter 8	Layers 1, 2	2
ROI(𝑥,𝑦)=0	—	—	Inter 16	—	Layer 1	1
Frame 𝐼
ROI(𝑥,𝑦)=1	—	Intra 4×4	—	—	—	—
ROI(𝑥,𝑦)=0	Intra 16×16	—	—	—	—	—

“—”: no corresponding coding mode has been selected.