Ocjena kvalitete filmske slike uporabom telekina

scientific master's theses

• Author: Tomislav Lukičić
• Mentor: Sonja Grgić (mentor)
• Committee member: Sonja Grgić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; (Department of Communication and Space Technologies); Zagreb
• Defense date and country: 2005, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Electrical Engineering; Radio Communications
• Universal decimal classification (UDC): 621.3 - Electrical engineering

Abstract

Telekino je prvo mjesto u proizvodnom lancu izrade filma, gdje je moguće vidjeti, mjeriti i upravljati kvalitetom reproducirane slike, čime je otvorena mogućnost kontrole svih snimljenih materijala bez značajnijih povećavanja troškova konačnog montiranja. U ovom radu dan je osvrt na ulogu telekina u filmskoj produkciji, te njegovu primjenu kroz povijest i danas. U radu je pojašnjena struktura filma, objašnjeni su mogući formati filmske slike i tona, te je pojašnjena rezolucija filma i videosignala. Naveden je pregled glavnih elemenata telekino odjela, kao i postupak usklađivanja različitih frekvencija izmjene slika, filmskog i televizijskog sistema. Slijedom signala kroz telekino, pojašnjene su glavne faze obrade i korekcije videosignala, te su spomenuti sustavi snimanja videosignala. U radu je opisan postupak mjerenja kvalitete filmske slike pomoću ispitnih karti kao referentnih vrijednosti, usporedbom razina normiranog videosignala i videosignala s telekina podešenog prema uvjetima s mjesta snimanja. Opisane razlike u razinama videosignala dobivene mjerenjem, upućuju na karakter odstupanja filmskog zapisa nastalog u subjektivno odabranim uvjetima rasvjete (zbog postizanja umjetničkog dojma), od filmskog zapisa u normiranim uvjetima. Kontroliranjem dobivenih razlika na telekinu utvrđena je i prati se razina kvalitete snimljenog filmskog materijala s istog mjesta snimanja. Iz svega navedenog moguće je zaključiti da ako su izmjerene razlike približno konstantne vrijednosti, održana je ujednaćena kvaliteta slike snimljenog materijala tijekom proizvodnje cijelog filma.

Abstract (english)

Telecine is a first place in film production chain, where it is possible to see, measure and do a quality evaluation of transmitted picture, by which it is possible to control the entire shot materials without major increase in postproduction expenses. In this paper, it is given a review on a telecine roll in film production, as well as use of telecine from the beginning of TV up to nowadays. In this paper a structure of film is explained, also possible formats of film picture and film sound, as well as resolution of film picture and video signal are explained. Main telecine suit elements are specified, and pulldown process is explained. Following signal trough a telecine, all main stages of video signal corrections are clarified and system of recording video signal is mentioned. In paper the procedure of quality evaluation of film picture is described by measurement of video signal, according to test charts as a reference value, comparing standard video signal level and video signal level from a telecine calibrated according to light conditions from shooting location. Described differences between levels of video signal are explaining the character of film drift, because of artistically created light conditions, comparing with film material from standard light conditions. By controlling on telecine established differences, it is determined and monitored a quality level of the shot film material from the same location. From all stated, a quality level of shot film material is maintained if determined differences are approximately constant value during the whole process of film making.

• Keywords: Telekino; formati filmske slike; rezolucija; katodna cijev; videosignal; TAF ispitni film; obrada signala; fosfor; digitalizacija filmske slike; digitalni ton
• Keywords (english): Telecine; frame formats; resolution; catode ray tube; video signal; TAF test film; signal processing; phosphor; digital process exchange; digital sound
• Language: croatian
• URN:NBN: urn:nbn:hr:168:233028
• Study programme: Title: Postgraduate master programme in electrical engineering; Study programme type: university; Study level: postgraduate; Academic / professional title: Magistar znanosti elektrotehnike (Magistar znanosti elektrotehnike)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2019-07-03 09:02:52