In this paper we present a new practical camera characterization technique to improve color accuracy in high dynamic range (HDR) imaging. Camera characterization refers to the process of mapping device-dependent signals, such as digital camera RAW images, into a well-defined color space. This is a well-understood process for low dynamic range (LDR) imaging and is part of most digital cameras — ...

Inspired by the ModelFest and ColorFest data sets, a contrast sensitivity function was measured for a wide range of adapting luminance levels. The measurements were motivated by the need to collect visual performance data for natural viewing of static images at a broad range of luminance levels, such as can be found in the case of high dynamic range displays. The detection of sine-gratings with...

A range image segmentation contest was organized in conjunction with ICPR’2000. The goal is to continue the effort of experimentally evaluating range image segmentation algorithms initiated in [3, 4]. This paper summarizes the results of the contest.

This paper presents a phonetic analysis of pitch range as perceived and measured on utterance and syllable level. A previous analysis of read speech showed that German speakers produced a larger pitch-range on utterance level, whereas Swiss German speakers produced a larger pitch-range on syllable level. This analysis was based on the production of broadcasters reading news messages and a fairy...

We consider data structures and algorithms for preprocessing a labelled list of length n so that, for any given indices i and j we can answer queries of the form: What is the mode or median label in the sequence of labels between indices i and j. Our results are on approximate versions of this problem. Using O( n 1−α ) space, our data structure can find in O(log log 1 α n) time an element whose...

In this section a discussion of the evolution of a notion of strong mixing as a measure of short range dependence and with additional restrictions a sufficient condition for a central limit theorem, is given. In the next section I will give a characterization of strong mixing for stationary Gaussian sequences. In Sect. 3 I will give a discussion of processes subordinated to Gaussian processes a...

Recent advances in the design of high dynamic range (HDR) monitors enable the display of images having a large dynamic range, close to that encountered in the real world. As their usage will increase, we will be confronted with the problem of rerendering images that have been mapped to standard dynamic range (SDR) displays so that they look natural on HDR monitors. We address this issue for SDR...