TAILIEUCHUNG - Digital Cinema Resolution – Current Situation and Future requirements

Home theater projection has always promised greater viewer engagement, the prospect of a bigger, more exciting, more enveloping picture than just television. Greater engagement requires the screen to fill a larger field of view. This can only be achieved by sitting closer to the screen or increasing the overall screen size. But this has always run the risk of exposing image artifacts that pass without notice on smaller screens. | Entertainment Technology Consultants FechnoV Digital Cinema Resolution - Current Situation and Future requirements By Matt Cowan Report Objectives This report is intended to discuss the resolution and related issues that affect image quality for digital cinema applications to relate it to current film resolution characteristics and current and potential future digital offerings. Introduction Resolution is often discussed in the context of digital cinema and digital film processing. The visual attributes described as resolution are often confused with other image attributes such as sharpness and detail. Resolution numbers are often quoted for original negative capability but seldom related to distribution prints. In practice the resolutions used for digital post production for films are lower than original negative film is capable of. As a result a discussion on the required resolution for digital cinema is not straightforward but must consider a number of perhaps conflicting and not fully defined parameters in coming to the answer. Seeing is believing and it is more than just resolution numbers that will determine how filmic the image appears. Factors such as color management and dynamic range which are important contributors to filmic image presentation are not considered in this report. Resolution Sharpness and Detail In general usage the meanings of resolution sharpness and detail are often interchanged. Modulation Transfer Function MTF another technical term that relates to the same issues. Resolution is a technical term relating to the ability to image fine spatial frequencies through an optical system. When used as a figure of merit for an optical system it refers to the results of measurements using test patterns and usually measuring the limiting resolution often specified as 5 modulation Sharpness is a descriptive term that relates to the amount of picture information available to the viewer. Sharpness is a combination of not only limiting resolution but .

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