Resolution analysis of archive films for the purpose of their optimal digitization and distribution

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61384984%3A51310%2F17%3AN0000112" target="_blank" >RIV/61384984:51310/17:N0000112 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1117/12.2274095" target="_blank" >http://dx.doi.org/10.1117/12.2274095</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1117/12.2274095" target="_blank" >10.1117/12.2274095</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Resolution analysis of archive films for the purpose of their optimal digitization and distribution

Popis výsledku v původním jazyce

With recent high demand for ultra-high-definition (UHD) content to be screened in high-end digital movie theaters but also in the home environment, film archives full of movies in high-definition and above are in the scope of UHD content providers. Movies captured with the traditional film technology represent a virtually unlimited source of UHD content. The goal to maintain complete image information is also related to the choice of scanning resolution and spatial resolution for further distribution. It might seem that scanning the film material in the highest possible resolution using state-of-the-art film scanners and also its distribution in this resolution is the right choice. The information content of the digitized images is however limited, and various degradations moreover lead to its further reduction. Digital distribution of the content in the highest image resolution might be therefore unnecessary or uneconomical. In other cases, the highest possible resolution is inevitable if we want to preserve fine scene details or film grain structure for archiving purposes. This paper deals with the image detail content analysis of archive film records. The resolution limit in captured scene image and factors which lower the final resolution are discussed. Methods are proposed to determine the spatial details of the film picture based on the analysis of its digitized image data. These procedures allow determining recommendations for optimal distribution of digitized video content intended for various display devices with lower resolutions. Obtained results are illustrated on spatial downsampling use case scenario, and performance evaluation of the proposed techniques is presented.

Název v anglickém jazyce

Resolution analysis of archive films for the purpose of their optimal digitization and distribution

Popis výsledku anglicky

With recent high demand for ultra-high-definition (UHD) content to be screened in high-end digital movie theaters but also in the home environment, film archives full of movies in high-definition and above are in the scope of UHD content providers. Movies captured with the traditional film technology represent a virtually unlimited source of UHD content. The goal to maintain complete image information is also related to the choice of scanning resolution and spatial resolution for further distribution. It might seem that scanning the film material in the highest possible resolution using state-of-the-art film scanners and also its distribution in this resolution is the right choice. The information content of the digitized images is however limited, and various degradations moreover lead to its further reduction. Digital distribution of the content in the highest image resolution might be therefore unnecessary or uneconomical. In other cases, the highest possible resolution is inevitable if we want to preserve fine scene details or film grain structure for archiving purposes. This paper deals with the image detail content analysis of archive film records. The resolution limit in captured scene image and factors which lower the final resolution are discussed. Methods are proposed to determine the spatial details of the film picture based on the analysis of its digitized image data. These procedures allow determining recommendations for optimal distribution of digitized video content intended for various display devices with lower resolutions. Obtained results are illustrated on spatial downsampling use case scenario, and performance evaluation of the proposed techniques is presented.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

<a href="/cs/project/DF13P01OVV006" target="_blank" >DF13P01OVV006: METODIKY DIGITALIZACE NÁRODNÍHO FILMOVÉHO FONDU. Metodiky hodnocení kvality filmového obrazu z pohledu zrakového vjemu diváka s cílem vytvoření rovnocenné restaurované digitální kopie v porovnání s mateřskými archivními filmovými obrazovými zdroji.</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Applications of Digital Image Processing XL

ISBN

9781510612495

ISSN

0277-786X

e-ISSN

1996-756X

Počet stran výsledku

12

Strana od-do

103962T-1 - 103962T-12

Název nakladatele

SPIE

Místo vydání

Bellingham

Místo konání akce

San Diego, California, USA

Datum konání akce

6. 8. 2017

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000418443700080