TY  - ABST
AU  - Xim Cerda-Company
AU  - C. Alejandro Parraga
AU  - Xavier Otazu
A2  - ECVP
PY  - 2014//
TI  - Which tone-mapping is the best? A comparative study of tone-mapping perceived quality
BT  - Perception
SP  - 106
VL  - 43
N2  - Perception   43  ECVP Abstract SupplementHigh-dynamic-range (HDR) imaging refers to the methods designed to increase the brightness dynamic range present in standard digital imaging techniques. This increase is achieved by taking the same picture under dierent exposure values and mapping the intensity levels into a single image by way of a tone-mapping operator (TMO). Currently, there is no agreement on how to evaluate the qualityof dierent TMOs. In this work we psychophysically evaluate 15 dierent TMOs obtaining rankings based on the perceived properties of the resulting tone-mapped images. We performed two dierent experiments on a CRT calibrated display using 10 subjects: (1) a study of the internal relationships between grey-levels and (2) a pairwise comparison of the resulting 15 tone-mapped images. In (1) observers internally matched the grey-levels to a reference inside the tone-mapped images and in the real scene. In (2) observers performed a pairwise comparison of the tone-mapped images alongside the real scene. We obtained two rankings of the TMOs according their performance. In (1) the best algorithmwas ICAM by J.Kuang et al (2007) and in (2) the best algorithm was a TMO by Krawczyk et al (2005). Our results also show no correlation between these two rankings.
N1  - CIC; NEUROBIT; 600.074
ID  - Xim Cerda-Company2014
ER  -