Improved Algorithm for Intraframe Prediction Mode Fast Selecting in High-Efficiency Video Coding Based on Size of Prediction Units

Table 2. Mode list of layer 2
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Table 2. Mode list of layer 2
F_MM1/S_MM1 Δ_2-1/Δ_2-2
2 {3,4}
10 {8,9,11,12}
18 {16,17,19,20}
26 {24,25,27,28}
34 {32,33}

Table 3. Mode list of layer 3
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Table 3. Mode list of layer 3
FMM₂ Δ_3-1
(F_MM1+2)/(S_MM1+2) {F_MM2+1,F_MM2+2}
(F_MM1 -2)/(S_MM1-2) {F_MM2-1,F_MM2-2}
SMM₂ Δ_3-2
(F_MM1+2)/(S_MM1+2) {S_MM2+1}
(F_MM1-2)/(S_MM1-2) {S_MM2-1}

Table 4. Performance comparison between proposed algorithm and original algorithm

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Table 4. Performance comparison between proposed algorithm and original algorithm

Class	Resolution	Sequence	BD-BR /%	BD-PSNR/dB	ΔT /%
A	2560×1600	Traffic	0.64	-0.03	31.2
A	2560×1600	PeopleOnStreet	0.86	-0.05	32.1
B	1920×1080	BasketballDrive	0.81	-0.04	34.0
B	1920×1080	ParkScene	0.64	-0.02	33.6
C	832×480	BasketballDrill	1.06	-0.03	31.5
C	832×480	BQMall	0.93	-0.04	30.8
D	416×240	BasketballPass	0.80	-0.05	31.7
D	416×240	RaceHorses	0.91	-0.04	31.6
E	1280×720	FourPeople	0.75	-0.04	31.3
E	1280×720	Johnny	1.22	-0.06	33.5
Average			0.86	-0.04	32.2

Table 5. Performance comparison between proposed algorithm and existing algorithms
View table
Table 5. Performance comparison between proposed algorithm and existing algorithms
Algorithm BD-BR /% ΔT /%
Method in Ref. [5] 1.42 20.5
Method in Ref. [6] 1.07 35.6
Method in Ref. [7] 0.70 29.3
Method in Ref. [10] 0.70 30.9
Method in Ref. [11] 1.19 37.8
Proposed method 0.86 32.2

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Min Shi, Shihua Xi, Qingming Yi. Improved Algorithm for Intraframe Prediction Mode Fast Selecting in High-Efficiency Video Coding Based on Size of Prediction Units[J]. Laser & Optoelectronics Progress, 2019, 56(20): 201001

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