TY - GEN
T1 - Roughness vs. contrast in natural textures
AU - Van Egmond, René
AU - De Ridder, Huib
AU - Pappas, Thrasyvoulos N.
AU - Silva, Pubudu M.
N1 - Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.
PY - 2014
Y1 - 2014
N2 - We investigate the effect of contrast enhancement on the subjective roughness of visual textures. Our analysis is based on subjective experiments with seventeen images from the CUReT database in three variants: original, synthesized textures, and contrast-enhanced synthesized textures. In Experiment 1, participants were asked to adjust the contrast of a synthesized image so that it became similar in roughness to the original image. A new adaptive procedure that extends the staircase paradigm was used for efficient placement of the stimuli. In Experiment 2, the subjective roughness and the subjective contrast of the original, synthesized, and contrastenhanced synthesized images were determined using a pairwise comparison paradigm. The results of the two experiments show that although contrast enhancement of a synthesized image results in a similar subjective roughness as the original, the subjective contrast of that image is considerably higher than that of the original image. Future research should give more insights in the interaction between roughness and contrast.
AB - We investigate the effect of contrast enhancement on the subjective roughness of visual textures. Our analysis is based on subjective experiments with seventeen images from the CUReT database in three variants: original, synthesized textures, and contrast-enhanced synthesized textures. In Experiment 1, participants were asked to adjust the contrast of a synthesized image so that it became similar in roughness to the original image. A new adaptive procedure that extends the staircase paradigm was used for efficient placement of the stimuli. In Experiment 2, the subjective roughness and the subjective contrast of the original, synthesized, and contrastenhanced synthesized images were determined using a pairwise comparison paradigm. The results of the two experiments show that although contrast enhancement of a synthesized image results in a similar subjective roughness as the original, the subjective contrast of that image is considerably higher than that of the original image. Future research should give more insights in the interaction between roughness and contrast.
KW - Roughness metrics
KW - subjective evaluation
KW - texture analysis/synthesis
UR - http://www.scopus.com/inward/record.url?scp=84897522291&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84897522291&partnerID=8YFLogxK
U2 - 10.1117/12.2047135
DO - 10.1117/12.2047135
M3 - Conference contribution
AN - SCOPUS:84897522291
SN - 9780819499318
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Proceedings of SPIE-IS and T Electronic Imaging - Human Vision and Electronic Imaging XIX
PB - SPIE
T2 - Human Vision and Electronic Imaging XIX
Y2 - 3 February 2014 through 6 February 2014
ER -