Material and shape perception based on two types of intensity gradient information
Fig 14
The angular difference between the judgments on tone-mapped and original images is plotted as a function of the amplitude of the sinusoidal modulation. Error bars indicate 95% confidence intervals computed using bootstrap estimates. Different symbols indicate different slopes as indicated in the legend of Fig 12. For both illumination conditions, results show that large deviations in the perceived shape were obtained when amplitude modulation was added to the remapping with a slope 0.5, i.e., when the intensity order of the original image was disrupted.