Datensatz

Zusammenfassung

We conduct a series of experiments to investigate the desired properties of a tone mapping operator (TMO) and to design such an operator based on subjective data. We propose a novel approach to the tone mapping problem, in which the tone mapping is determined by the data from subjective experiments, rather than an image processing algorithm or a visual model. To collect such data, a series of experiments are conducted in which the subjects adjust three generic TMO parameters: brightness, contrast and color saturation. In two experiments, the subjects are to find a) the most preferred image without a reference image and b) the closest image to the real-world scene which the subjects are confronted with. The purpose of these experiments is to collect data for two rendering goals of a TMO: rendering the most preferred image and preserving the fidelity with the real world scene. The data provide an assessment for the most intuitive control over the tone mapping parameters. Unlike most of the researched TMOs that focus on rendering for standard low dynamic range monitors, we consider a broad range of potential displays, each offering different dynamic range and brightness. We simulate capabilities of such displays on a high dynamic range (HDR) monitor. This lets us address the question of whether tone mapping is needed for HDR displays.