Camera Radiometric Calibration from Motion Images

We present a research study for estimating a camera's radiometric response function from a series of motion images. Current methods to estimate this function rely on multiple static images taken under different exposures or different lighting conditions, the use of measurement charts, image sets from point-and-shoot only cameras, or assume a simplistic model of the function's shape. All these become impractical when it comes to having a robust efficient method that can fit into motion picture industry post-production workflows, ACES as an example, where simplicity and accuracy are very important. In this paper we present a research methodology based on the work of Lin et al. expanding it to the use of measured color characteristics in a motion image sequence and include additional constraints during the estimation. Using footage from an ARRI D21, preliminary results are presented and discussed.

Published

2013-10

Content type

Original Research

Keywords

Radiometric calibration, camera response function, high dynamic range, gamma correction, Image Interchange Framework, computational photography

DOI

10.5594/M001510

ISBN

978-1-61482-953-9