2016 [1][2] H.264/AVC HEVC HEVC

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1 HEVC 2012 (409825)

2 2016 [1][2] H.264/AVC HEVC HEVC

3 Abstract As ultra high definition television is planning on test broadcasting 2016, moving picture resolution enhancement is advancing in recent years. Increasing of calculation frequency required for the encoding is big problem of encoder implementation. Many idea for calculation frequency reduction had been proposed. Our laboratory has proposed course-fine hierarchical search method using 4 directional extended templates. It can provide both high estimation accuracy and low operation amount, for highly paralleling processing. We studied encoding using conventional moving picture compression standard H.264/AVC. But ultra high definition broadcast will definitely use next standard HEVC(H.265). Therefore the author researched efficiency improvement of the course-fine hierarchical search using 4 directional extended templates for HEVC.

4 HEVC SAD(Sum of Absolute Difference) i

5 6.11 HEVC ii

6 1.1 H HEVC HEVC iii

7 iv

8 (1920x1080) 2 ( ) 4K K 2 ( ) (8K) K 16 1

9 x x fps, HEVC HEVC(High Efficiency Video Coding) H.264/AVC HEVC H.265 4K x4 16x x4 64x64 2

10 4x4 8x4 4x8 8x8 16x8 8x16 16x16 1.1: H.264 HEVC H.264/AVC HEVC. HEVC,,,. HEVC 3

11 32x16 16x32 32x32 64x32 32x64 64x64 1.2: HEVC 4

12 no divided 64x64 32x32 16x16 8x : HEVC

13 2.2 SAD(Sum of Absolute Difference) (SAD) SAD SAD SAD 6

14 2.3 SAD SAD 7

15

16

17 4PEL precision 2PEL precision 1PEL precision 4.4: 10

18 search block 2,3,4,5 extended templates 4.5: HEVC 11

19 5.6 HM HM8.0 no yes yes 3 no yes 3 no yes no : 5.2 2x x

20 Yes 3 Yes No No Yes 0 No 0 5.7: 13

21 5.3 HEVC 4 SAD 4 SAD x y

22 SAD No Yes X Y SAD 2 SAD 6 5.8: x8 2x2 3 15

23 BitRate PSNR ITU : 3 Horse Soccor Whale Bronze Street BitRate PSNR BitRate PSNR BitRate PSNR BitRate PSNR BitRate PSNR BitRate PSNR BitRate PSNR BitRate PSNR BitRate PSNR

24 6.1 HorseRace BitRate 128 BitRate HorseRace BitRate HEVC

25 6.2: Horse Soccor Whale Bronze Street 128 x BitRate PSNR BitRate PSNR BitRate PSNR x BitRate PSNR BitRate PSNR x BitRate PSNR PSNR 3 2 HEVC 2 18

26 6.5 3 HEVC : 3 Horse Soccor Whale Bronze Street 128 BitRate PSNR BitRate PSNR BitRate PSNR BitRate PSNR BitRate PSNR BitRate PSNR

27 BitRate PSNR HEVC 6.7 HM TZSearch : 3 Horse Whale Bronze Street 128 BitRate PSNR BitRate PSNR BitRate PSNR TZSearch BitRate PSNR

28 6.4 TZSearch Horse PSNR TZSearch BitRate Horse TZSearch HEVC 6.9 HEVC 3 H.264/AVC 3 HEVC 2 21

29 HEVC HD 22

30 UHD 6.11 HEVC HM TZSearch HEVC TZSearch 23

31 7 HEVC 3 TZSearch TZSearch 24

32 25

33 [1] VOL.J95-D NO.1,2012 [2] H.264. CS, 108(343), 71-76,

16 2020 H.264/AVC 2 H.265/HEVC 1 H.265 JCT-VC HM(HEVC Test Model) HM 5 5 SIMD HM 33%

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(SAD) x86 MPSADBW H.264/AVC H.264/AVC SAD SAD x86 SAD MPSADBW SAD 3x3 3 9 SAD SAD SAD x86 MPSADBW SAD 9 SAD SAD 4.6 SAD 23 (410M520) (SAD) x86 MPSADBW H.264/AVC H.264/AVC SAD SAD x86 SAD MPSADBW SAD 3x3 3 9 SAD SAD SAD x86 MPSADBW SAD 9 SAD SAD 4.6 Abstract In recent years, the high definition of video image has made

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