RS20180385A1 - Postupak otkivanja artefakata gubitka paketa u slici u prenetom video signalu - Google Patents

Postupak otkivanja artefakata gubitka paketa u slici u prenetom video signalu

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Publication number
RS20180385A1
RS20180385A1 RS20180385A RSP20180385A RS20180385A1 RS 20180385 A1 RS20180385 A1 RS 20180385A1 RS 20180385 A RS20180385 A RS 20180385A RS P20180385 A RSP20180385 A RS P20180385A RS 20180385 A1 RS20180385 A1 RS 20180385A1
Authority
RS
Serbia
Prior art keywords
packet loss
artifacts
macro
block
detected
Prior art date
Application number
RS20180385A
Other languages
English (en)
Inventor
Mario Vranješ
Marijan Herceg
Ratko Grbić
Ištvan Pap
Jelena Kovačević
Original Assignee
Rt Rk D O O
Fakultet Elektrotehnike Racunarstva I Informacionih Tehnologija Osijek
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Rt Rk D O O, Fakultet Elektrotehnike Racunarstva I Informacionih Tehnologija Osijek filed Critical Rt Rk D O O
Priority to RS20180385A priority Critical patent/RS20180385A1/sr
Publication of RS20180385A1 publication Critical patent/RS20180385A1/sr

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Abstract

Postupak otkrivanja artefakata gubitka paketa u slici u prenetom video signalu ima za novost da se predobradom, filtriranjem vertikalnih i horizontalnih gradijenata i horizontalnih i vertikalnih ivica, dobijaju pravi uglovi (210) preklapanjem dobijenih oštrih horizontalnih ivica (240) i oštrih vertikalnih ivica (245), odnosno pronalaze se makro-blokovi (330) sa detektovanim artefaktima gubitka paketa. Postupak je, pored koraka (120) detekcije pravih uglova (210), karakterisan i načinom na koji se sadržaj slike razlikuje od artefakata gubitka paketa, a to je praćenje u koliko se uzastopnih okvira makro-blok (330) sa detektovanim artefaktom gubitka paketa pojavljuje na istoj lokaciji i poređenje sa predefinisanim maksimalnim brojem F ponavljanja okvira na istoj lokaciji u koraku (150) razlikovanja sadržaja od artefakata gubitka paketa. Ukoliko se na istoj lokaciji pronađu artefakti gubitka paketa, to jest ako se u istom makro-bloku (200) pojave više od F uzastopnih okvira, makro-blok (330) sa detektovanim artefaktom gubitka paketa se "zaključava" i algoritam ga beleži kao sadržaj. Makro-blok (200) ostaje "zaključan" dokle god se u njemu pojavljuje artefakt gubitka paketa u uzastopnim okvirima, a "otključava" se ponovo tek kada se na navedenoj lokaciji u predefinisanom broju A uzastopnih okvira ne pojavljuje artefakt.
RS20180385A 2018-03-27 2018-03-27 Postupak otkivanja artefakata gubitka paketa u slici u prenetom video signalu RS20180385A1 (sr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RS20180385A RS20180385A1 (sr) 2018-03-27 2018-03-27 Postupak otkivanja artefakata gubitka paketa u slici u prenetom video signalu

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RS20180385A RS20180385A1 (sr) 2018-03-27 2018-03-27 Postupak otkivanja artefakata gubitka paketa u slici u prenetom video signalu

Publications (1)

Publication Number Publication Date
RS20180385A1 true RS20180385A1 (sr) 2019-09-30

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Application Number Title Priority Date Filing Date
RS20180385A RS20180385A1 (sr) 2018-03-27 2018-03-27 Postupak otkivanja artefakata gubitka paketa u slici u prenetom video signalu

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RS (1) RS20180385A1 (sr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4147448A1 (en) * 2020-05-04 2023-03-15 SSIMWAVE Inc. Macroblocking artifact detection

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4147448A1 (en) * 2020-05-04 2023-03-15 SSIMWAVE Inc. Macroblocking artifact detection
EP4147448A4 (en) * 2020-05-04 2024-05-15 SSIMWAVE Inc. MACROBLOCK ARTIFACT DETECTION

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