ABSTRACT
Abstract
The human visual system has the capacity of instantaneously receiving
a large amount of visual information about an abundance of details and
numerous colors in a different dynamic range of light. To reproduce
this is challenging since even the latest technology has limited abilities
regarding the representation of the actual lighting. The HDR technology
reproduces lightning rather faithfully. As a result, different techniques
and software tools for creating HDR images are currently being developed.
So far, combining LDR images of the same scene, taken with different
exposition times, to produce an HDR image, has seemed to be the most
reliable and the most common method in use. The area is in the early
stages of development, so several software development companies are
working on tools for the purpose of getting better and better results.
Since neither a standardized method nor a possible candidate for a
superior or even a preferable tool has emerged up to now, assessing the
quality of HDR images created with each of the available and marketed
tools appears to be an inevitability. The evaluation in this case is, nevertheless,
a delicate matter, since the end user is the human eye, i.e.,
the very subjective human perception. To overcome this difficulty, both
psychophysical and psychometrical experiments are extensively used.
The study is aimed at analyzing the possibilities and the end results of
the LDR-to-HDR procedure, using each of the leading software tools
for creating HDR images. The goal is to contribute to the creation of
standard methods and tools for creating images with high dynamic range.
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