4K: Models for Motion Control to Ensure True 4K Detail at Capture

The advent of 4K bears the promise of resolutions 4 times larger than 2K Digital Cinema. For images to take advantage of this increase, capture systems must be configured and operated to maximize detail. — One of the critical components for maintaining image detail is motion blur, dictated by optical flow (motion, as seen by the sensor) and shutter speed (to ensure smoothness of motion). — In this paper, the author details mathematical models and practical methods to optimize motion during 4K capture and provides recommendations based on his experience in 4K. — One of the significant conclusions of this research is that with ultra high resolutions, given the low frame rates of cinema (24 and 48 fps), motion blur is the most significant factor limiting detail beyond 2K and needs to be managed closely during production, as much as depth of field is with conventional cinema.

Published

2014-10

Content type

Original Research

Keywords

4K, UHD, Motion, Detail, optical flow

DOI

10.5594/M001589

ISBN

978-1-61482-954-6