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In-Loop Filtering with a Deep Network in HEVC

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5 5353 ᗞ# 㧶ሇ⃃☻余ₒ᦮⩎ᆏ㧳㬦# ㈮ᅞ㧳⚺រ㬦#

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# ᦿᲆ᝷# ዊ⚺Ⰾ# ₶Ⲟ㨂⩪# ᧊ᰖ# Kljk0Hiilflhqf|0Ylghr0Frglqj+KHYF,⫚# Ⴓ⯚# ⋞᦮⪾# ㏮᠋⯞# ᦿᲆ᝷# ዊ⚺⯞# ╆⭃㨎# ₶Ⲟ❶㔾ᜮ# ⃃ℯⰎ# ṨⰎ# ❶ᡞᢲ⩢᝾1# ႚⰿ# ṨⰎ# ⪊ሆᢶ# ∞⨖# ⶫ# 㧲ᔲ⩪ᜮ# ㏮᠋# ᕎ√⯲# 㧞㗊᥾⯞# ⪛╛# ↏⭪# ዊ⚺⯞# 㙏㨎# Ⴖ►❶㔾ᜮ# ⪊ሆႚ# Ⱒ᝾1# →# ᘖῒ⩪▶ᜮ# ኒ# ⶫ# Vdpsoh# dgdswlyh# riivhw+VDR,# 㧞㗊ṛ# ዊℯ⯞# ዤ⯚# ❺ᅗṷ⯖ᳶ# រㅎ㧲ᜮ# ⃃❷⯞# Ⲷ⧢㧶᝾1# VDR ᜮ# ⶖ⅚# ⲯ↎᥾⯞# 㙏㨎# ⩪ᲆ⯲# 㪯㕶Ḗ# ᅊⲯ㧲ᅺ# ኒḖ# ╛♞㧲ᜮ# Ⴌ⯞# Ⲟ☻㧲ᜮ# 㪯㕶Ḗ# ႚ⹞᝾1# Ⰾ# ᧦# ヘ⯚# ↎╛# ႬⰎ# ㇶⲛ⯲# ႬⰎ# ⧞ᝢዊ# ᧦ῒ⩪# Ⲷ⧢# ዊℯ⩪▶ᜮ# ዤ⯚# ❺ᅗṷ⯞# 㙏㨎▶# ኒ# Ⴌ⯞# ヘᜮ᝾1# Ⲷ⧢㧲ᜮ# ᖾ㝒⭦㔆ᜮ# ㇶⲛ⯲# ↎╛# Ⴌ⯞# ヘᜮ# √∞ᆖ# ⩪ᲆ⯲# 㪯㕶Ḗ# ヘᜮ# √∞⯖ᳶ# Ⰾᶂ⩎Ⳓ# Ⱒ⯖Ἂ/# ᣪ# ᖾ㝒⭦㔆Ḗ# 㙏㨎# ⋞►㪯ⲛⰎᅺ# ↏ⰻ㧶# 㪯㕶⯲# ⩪ᲆḖ# Ⲷᄊ㧺# ⚲# Ⱒ᝾1# ❾㩲# ᅊᆖ# Ⲷ⧢㧲ᜮ# ⃃❷⯚# Ⲛ⹚⪊# S# ὂ᥶⫚# Ⱎ⯲ⲫኖ# ὂ᥶⩪▶# ዊⴎ# KHYF ↎᝾# ⴥ⯚# ○᜿⯞# ᕒ# ᄝ⯞# 㫯Ⱂ㧺# ⚲# Ⱒ᝾1# #

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41# ▶ᳺ#

✾Ṣ㝒㢊Ⰾᔲ# WY# Ⴓ⯚# 㧲᥶⮂⩎# ዊ⚺Ⰾ# ₶Ⲟ㨂⩪# ᧊ᰖ# ⪛╛⯲# 㤢⹢⯞# Ⴖ►㧲ᜮ# ዊ⚺# ⪇❶# ⶫ⬮㨎⹚ᅺ# Ⱒ᝾1# ᡳ❶⩪# ᖾ㝒⭦㔆# ዊ⚺⯲# ኣᅃ㧶# ₶Ⲟ⩪# ⯲㨎# ⪛╛⯲# ╆⭃ᱣ# ⪇❶# ኣᅃ㧲ᄦ# ⸷ႚ㨢᝾1# ᄦ᝾ႚ# 㧲᥶⮂⩎⯲# ₶Ⲟ⯖ᳶ# Ⱂ㨎# ⪛╛⯲# 㨎╛ᡞ# ⪇❶# ៮⭋# ⸷ႚ㨢᝾1# ኒᲆ⁚ᳶ# ᘬ⯚# 㤢⹢ᆖ# ᕈ⯚# ⭃ᱣ⯞# ႚ⹢# ⚲# Ⱒᄦ# 㧲ᜮ# ⪛╛# ⧯㈯# ዊ⚺Ⰾ# 㧞⬮㧲᝾1# # # # #

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KHYFᜮ# ⰎⲞ# 㣶⶚# ㏮᠋Ⱂ# K15972DYF^5`⫚# ⋞❑㧶# ⧯㈯# ㄲṆ# ᆖⲯ⯞# ႚ⹚Ἆ▶/# ៮⭋# ⹞↎ᢶ# ዊ⚺ᆖ# Ⅻ᳆# ㄲṆ# ዊ⚺⯞# 㙏㨎# ៮⭋# 㭂⯂ⲛⰎᅺ# ⋺Ḏᄦ# ⧯㈯⯞# ⹞㨣㧶᝾1# Ⰾᲊ# ዊ⚺᥾# ⶫ⩪# ⪛╛⯲# 㤢⹢⯞# ↏⭪㧲ᜮ# √∞⩪ᜮ# រ㣶ⲛ⯖ᳶ# gheorfnlqj# ilowhu+GI,^6`⫚# vdpsoh# dgdswlyh# riivhw+VDR,^7`# ilowhuႚ# Ⱒ᝾1# GIᜮ# ⊮᳷# គ⮞# ㄲṆḖ# 㨂⯖ᳶ⠂# ╷ዊᜮ# ⊮᳷# ⩪ᲆḖ# Ⲷᄊ㧲ᜮ᠊# ╆⭃ᢲἊ# VDRᜮ# ⧯㈯# ᆖⲯ⩪▶# ᅺⶖ㞦# ○∞⯲# ☪❾⩪# ⯲㧶# ⩪ᲆḖ# Ⲷᄊ㧲ᜮ᠊# ╆⭃ᢶ᝾1# # Ⲷ⧢㧲ᜮ# ᘖῒ⩪▶ᜮ# VDR# 㧞㗊ṛ# ⃃❷⯞# ዤ⯚# ❺ᅗṷ⯖ᳶ# រㅎ㧲Ἂ# ⰎⲞ# ᦿᲆ᝷# ዊ₲# ᶂ㦞# ᕎ# 㧞㗊ṛ# ⃃❷᥾Ⰾ# ⪛╛# ↏⭪# ᆚⲪ⩪▶# ⫶ᅻᢶ# ⪛╛# ⲞㅎḖ# 㧶# ™⩪# ↏⭪㧲ᜮ# ᄝᆖᜮ# 145

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5 5353 ᗞ 㧶ሇ⃃☻余ₒ᦮⩎ᆏ㧳㬦 ㈮ᅞ㧳⚺រ㬦 ឆṆ# ❾Ⲷ# VDRㄲᲖ# ⊮᳷# គ⮞ᳶ# ↎╛# Ⴌ⯞# ⪢㊻㨎# Ⲟ☻㧶᝾1# Ⰾᲆ㧶# ⃃❷⯚# ㏮᠋# ᕎ√⩪▶# ⲛ⯚# ⨫⯲# ⋞㝒Ṧ⯞# ⬮ሆ㧲ዊ# ᧦ῒ⩪# ⪛╛# ↏⭪⯲# ⲯ㫯ᡞḖ# 㨿╛❶㔾ᜮ# ᡳ❶⩪# 㭂⯂ⲛ⯖ᳶ# ⋞㝒# ᱣ⯞# ⶞Ⱆ# ⚲# Ⱒ᝾1# #

51# Ⲷ⧢# ⧦ᅺṆ⸲#

⮞⩪▶# ⩒ኣ㨢ᦉⰎ# KHYFᜮ# ᣪႚ⹚# ᶂ㦞# ᕎ# 㧞㗊ṛ# ዊ⚺⯞# ႚ⹚ᅺ# Ⱒ᝾1# ᣪ# 㧞㗊ᜮ# ⧯㈯⯖ᳶ# Ⱂ㨎# ╷○ᢲᜮ# ⰻ⯦⯞# Ⲷᄊ㧲ᜮ# ᄝ⯚# ᡳⰖ㧲⹚Ṧ# ὃ㣶ᳶ# 㧲ᜮ# ⰻ⯦⯲# 㪯㕶ႚ# ᝾Ḏ᝾1# ኒ# ⶫ# VDRᜮ# Ⱂ㏮៮# ᕎ√⩪▶# ╆⭃ᢲἊ/# ⰻ⯦⯞# Ⲷᄊ㧺# ⚲# Ⱒᜮ# ↎╛# Ⴌ⯞# ⹛ⲫⲛ⯖ᳶ# ᅞ╊㨎# ╆⭃㧶᝾1# ኒṖ# 4# ⯚# ዊⴎ# KHYF⯲# VDR⫚# Ⲷ⧢# ⧦ᅺṆ⸲⯲# ሆῒ# 㝒ṆḖ# ↎⪆⶚᝾1# VDR⩪ᜮ# VDRḖ# ╆⭃㧲⹚# ⧤ᜮ# ὂ᥶+Rii,⫚# ╢ᳶ⭎# ⪾㦞◥# Ⴌ⯞# Ⲟ☻㧲ᜮ# ὂ᥶+Qhz,# ኒṆᅺ# ╛គⰎᔲ# ⴦㊻⩪# ⴎⱆ㧲ᜮ# ⊮᳷⯲# Ⴌ⯞# ⱆ╆⭃㧲ᜮ# ὂ᥶+Phujh,ႚ# ⴎⱆ㧶᝾1# ኒ# ⶫ# Qhz# ὂ᥶⩪ᜮ# Hgjh# Riivhw+HR,⫚# Edqg# Riivhw+ER,ႚ# ⴎⱆ㧶᝾1# HR⯲# ᅗ⭊# ᅗᅞ⯲# 㪯㕶Ḗ# ↏⭪㧺# ⚲# Ⱒᜮ# ↎╛# Ⴌ⯞# ᅊⲯ㨎# Ⲟ☻㧲ᅺ/# ER⯲# ᅗ⭊# ⲞㅎⲛⰒ# 㫮☦# Ⴌ⯞# ↏⭪㧺# ⚲# Ⱒᜮ# ↎╛# Ⴌ⯞# ᅊⲯ㨎# Ⲟ☻㧶᝾1# ᣪ# ႚ⹚# ⃃❷# ὂᣪ# ὂ᠒# ዊ₲# ⃃❷ⰎἊ/# ⩪ᲆḖ# ↏⭪㧲ᜮ# ㇶⲛ⯲# Ⴌ⯞# ⪢㊻㧶᝾ᅺ# ↎ዊᜮ# ⩎᳏᝾1# Ⲷ⧢㧲ᜮ# ⧦ᅺṆ⸲⩪▶ᜮ# ዊⴎ# VDR⯲# Qhz# ὂ᥶Ḗ# ዤ⯚# ❺ᅗṷ⯖ᳶ# រㅎ㧲⪆# ⧯㈯⩪# ⯲㧶# ⩪ᲆḖ# ↏⭪㧺# ⚲# Ⱒᜮ# ㇶⲛ⯲# Ⴌ⯞# ⪢㊻㧺# ⚲# Ⱒᡞ᳷# 㧶᝾1# ᧊ᰖ▶# Ⲷ⧢# ⧦ᅺṆ⸲⯲# ሆῒ# 㝒Ṇᜮ# ኒṖ# 41# +e,⫚# Ⴓ᝾1# Ⲷ⧢㧲ᜮ# ᖾ㝒⭦㔆ᜮ# HR⫚# ERႚ# 㧲ᜮ# Ⱆ⯞# ὂᣪ# ⚲㨣㧺# ⚲# Ⱒ⯖Ἂ/# 㝓㰢# HR⩪▶# ⋞►㪯ⲛ# 㫓⯚# ៮⭋# ↏ⰻ㧶# 㪯㕶⯲# ⩪ᲆḖ# ↎╛㧲ᜮ# Ⴌ⯞# ⪢㊻㧺# ⚲# Ⱒ᝾1# # Ⲷ⧢# ⧦ᅺṆ⸲⩪▶ᜮ# ዊⴎ# VDR⫚# ႳⰎ# ㈮ႚ# ⲯ↎Ḗ# ╷○㧲ᅺ# ╆⭃㧲ᜮ# ᖾ㝒⭦㔆Ḗ# ╆⭃㧶᝾1# ኒṖ# 5⫚# ႳⰎ# ᣪႚ⹚# ᖾ㝒⭦㔆ᳶ# ሆ○ᢲ⩎# Ⱒ⯖Ἂ/# 㧲គ⯲# ᖾ㝒⭦㔆⩪▶# ⪾㦞◥# Ⴌ⯞# ⪢㊻㧲Ἆ# ╛គ⯲# ᖾ㝒⭦㔆⩪▶# ⪢㊻㧶# ⪾㦞◥# Ⴌ⯞# Ⰾ⭃㧲⪆# ⪛╛⯞# ↏⭪㧶᝾1# ᪪㧶# KHYF⯲# ᦮㏮ᧃ⯞# 㧺# ᧦ᜮ# Ⱂ㏮៮⩪▶# Ⲟ☻㧶# ⪾㦞◥⯞# ╆⭃㧲Ἆ# ᢲዊ# ᧦ῒ⩪# ╛គ⯲# ᖾ㝒⭦㔆Ṧ# ⴎⱆ㧶᝾1# # #

61# ❾㩲#

Ⲷ⧢㧲ᜮ# ⃃ℯ⯞# ❾㩲㨎# ᄚ⸷㧲ዊ# ⮞㨎# PSHJ ⩪▶# Ⲷᆏ㧲ᜮ# fodvv# E# 㨎╛ᡞḖ# ႚ⹚ᜮ# ⪛╛⯞# ╆⭃㨢᝾^8`1# ႛ# ⪛╛⩪▶# ㄲ⯦# 83 㦞ᲢⰞ⯞# ᄚ⸷⩪# ╆⭃㨢⯖Ἂ/# Ⲛ⹚⪊# ὂ᥶⫚# Ⱎ⯲# ⲫኖ# ὂ᥶# 㫲ᅗ⩪▶# ㆷ# 7 ႚ⹚# ⨫Ⱚ㫮# ṾႶ⅚⚲+txdqwl}dwlrq# sdudphwhu,# Ⴌ⯞+55/# 5:/# 65/# 6:,# ╆⭃㨎# ❾㩲㧲⪚᝾1# # ᆏⲯ㧶# ⋞ᇪḖ# ⮞㨎# Ⴓ⯚# 㤢⹢⩪▶# 㡣ቺ# ⋞㝒⯂⯞# Ⲣ⨗㧲ᜮ# ⲯᡞḖ# ᔲ㕚ᕎᜮ# Emþqwhjddug# ghowd# elw0udwh# +EGEU,^9`Ḗ# ᅞ╊㧲⪚᝾1# 㣶# 41⩪▶ᜮ# ኒ# ᅊᆖḖ# ↖# ⚲# Ⱒ᝾1# Ⲷ⧢㧲ᜮ# ⧦ᅺṆ⸲⯚# ዊⴎ# KHYF ⩪# ⋞㨎▶# Ⲛ⹚⪊# ὂ᥶⩪▶# 715<(# Ⱎ⯲# ⲫኖ# ὂ᥶⩪▶# 6137(# ៮# ⴥ⯚# ○᜿⯞# ↎ⰎἊ/# ዊⴎ# ᦿᲆ᝷# ⧦ᅺṆ⸲⩪# ⋞㨎▶ᡞ# ⴥ⯚# ○᜿⯞# ↎Ⱎ⯞# ⧦# ⚲# Ⱒ᝾1# # +d,# # +e,# ኒṖ# 41#KHYF#VDR⫚# Ⲷ⧢# ⧦ᅺṆ⸲⯲# ሆῒ# 㝒Ṇ# =#+d,# ዊⴎ# KHYF/#+e,# Ⲷ⧢# ⧦ᅺṆ⸲# S Syntax

Off New Merge

BO EO Edge Direction Start Position 4 offsets 4 offsets L Left Up S Syntax

Off New Merge

4 offsets Up LLeft ኒṖ51# Ⲟㅎ# ❶✾㗶# ሆⴊᡞ# . . . O f f s e t s C T U & O r i g i n a l C T U C T U R e s B l k R e c o n . C T U O r i g i n a l C T U R a t e E s t i m a t i o n L o s s E n c o d e r D e c o d e r

Mode Low Delay P Random Access Methods DCAD[7] RHNet[8] DRN[9] Prop. DCAD[7] RHNet[8] DRN[9] Prop. Class B BasketballDrive -0.80 -3.12 -2.52 -4.97 0.50 0.89 -0.05 -2.96 BQTerrace -1.79 -3.63 -2.30 -3.08 -2.22 -2.85 -2.06 -3.11 Cactus -4.39 -5.33 -5.04 -4.72 -4.82 -5.10 -5.26 -4.38 Kimono -2.53 -3.35 -2.99 -6.52 -1.06 -0.55 -1.28 -2.29 ParkScene -1.68 -2.00 -1.89 -2.17 -1.18 -1.23 -1.72 -2.41 Average -2.24 -3.49 -2.95 -4.29 -1.76 -1.77 -2.07 -3.04 㣶# 41#Emþqwhjddug#ghowd#elw0udwh#+EGEU,# ○᜿# ⋞ᇪ# 146

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5 5353 ᗞ# 㧶ሇ⃃☻余ₒ᦮⩎ᆏ㧳㬦# ㈮ᅞ㧳⚺រ㬦# ኒṖ# 6 ⯚# Ⲷ⧢# ⧦ᅺṆ⸲ᆖ# ዊⴎ# KHYF Ḗ# 㙏㨎# ⧯㈯㧶# ⪛╛⯲# 㤢⹢⯞# ❶ႛⲛ⯖ᳶ# ↎⪆⶚᝾1# ኒṖ⯞# ↎Ἆ# ኒṖⰪ⯲# ᅗᅞ√∞Ⰾᔲ# ╆ᰦ⯲# 㞮# √∞ᆖ# ႳⰎ# ῖㅎ⯲# ᅗᅞ# √∞⯞# ↏⭪㧺# ᧦# Ⲷ⧢# ⧦ᅺṆ⸲Ⰾ# ዊⴎ# KHYF ↎᝾# ⲯ㫯㧲ᄦ# ↏⭪㧲ᜮ# ᄝ⯞# ⧦# ⚲# Ⱒ⯖Ἂ/# Ⰾᜮ# ዊⴎ# KHYF ⯲# ὂ᠒# ዊ₲# VDR ⯲# 㧶ᅞ⫚# Ⲷ⧢# ⧦ᅺṆ⸲⯲# ⭊⚲○⯞# ↎⪆⶚᝾1# #

71# ᅊᳺ#

→# ᘖῒ⩪▶ᜮ# KHYF ⯲# VDR Ḗ# ዤ⯚# ❺ᅗṷ⯖ᳶ# រㅎ㧲⪚᝾1# Ⲷ⧢# ᖾ㝒⭦㔆ᜮ# ᣪ# √∞⯖ᳶ# ሆ○ᢲ⩎# Ⱒ⯖Ἂ/# 㧶# ᖾ㝒⭦㔆⩪▶# ㇶⲛ⯲# ⪾㦞◥⯞# ⪢㊻㧲Ἆ# ᔲỒ⹚# ᖾ㝒⭦㔆⩪▶# ⪢㊻ᢶ# ⪾㦞◥⯞# ╆⭃㨎# ⪛╛⯞# ↏⭪㧶᝾1# Ⰾᜮ# VDR ⯲# HR ⫚# ⋞❑㧶# 㪯㕶Ḗ# ႚ⹚ᅺ# Ⱒ⯖Ἂ/# ኒ↎᝾# ៮⭋# ↏ⰻ㧲ᄊᔲ# ⋞►㪯ⲛⰒ# 㪯㕶⯲# ⩪ᲆᡞ# ↏⭪㧺# ⚲# Ⱒ᝾1# #

Ⴊ╆⯲# ኚ#

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[1] Sullivan, G. J., Ohm, J. R., Han, W. J., Wiegand, T. (2012). Overview of the high efficiency video coding (HEVC) standard. IEEE Transactions on Circuits and Systems for Video Technology, 22(12), 1649-1668.

[2] Schwarz, H., Marpe, D., Wiegand, T. (2007). Overview of the scalable video coding extension of the H. 264/AVC standard. IEEE Transactions on Circuits and Systems for Video Technology, 17(9), 1103-1120.

[3] Norkin, A., Bjøntegaard, G., Fuldseth, A., Narroschke, M., Ikeda, M., Andersson, K., Zhou, M., Auwera, G. (2012). HEVC deblocking filter. IEEE Transactions on Circuits and Systems for Video Technology, 22(12), 1746-1754.

[4] Fu, C. M., Alshina, E., Alshin, A., Huang, Y. W., Chen, C. Y., Tsai, C. Y., Hsu, C. W., Lei, S. M., Park, J. H. Han, W. J. (2012). Sample adaptive offset in the HEVC standard. IEEE Transactions on Circuits and Systems for Video Technology, 22(12), 1755-1764. [5] Bossen, F. (2013). Common test conditions and software reference

configurations. JCTVC-L1100, 12.

[6] Bjøntegaard, G. (2001). Calculation of average PSNR differences between RD-curves. VCEG-M33.

[7] Wang, T., Chen, M., Chao, H. (2017). A novel deep learning-based method of improving coding efficiency from the decoder-end for HEVC. IEEE Data Compression Conference.

[8] Zhang, Y., Shen, T., Ji, X., Zhang, Y., Xiong, R., Dai, Q. (2018). Residual highway convolutional neural networks for in-loop filtering in HEVC. IEEE Transactions on Image Processing, 27(8), 3827-3841.

[9] Wang, Y., Zhu, H., Li, Y., Chen, Z., Liu, S. (2018). Dense residual convolutional neural network based in-loop filter for HEVC. IEEE Visual Communications and Image Processing.

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