The visible differences predictor: an algorithm for the assessment of image fidelity
Digital images and human vision
Reflectance and texture of real-world surfaces
ACM Transactions on Graphics (TOG)
Toward a psychophysically-based light reflection model for image synthesis
Proceedings of the 27th annual conference on Computer graphics and interactive techniques
Reconstruction and representation of 3D objects with radial basis functions
Proceedings of the 28th annual conference on Computer graphics and interactive techniques
Proceedings of the 29th annual conference on Computer graphics and interactive techniques
A data-driven reflectance model
ACM SIGGRAPH 2003 Papers
Automated Eye Motion Using Texture Synthesis
IEEE Computer Graphics and Applications
APGV '05 Proceedings of the 2nd symposium on Applied perception in graphics and visualization
Verification of rendering quality from measured BTFs
APGV '06 Proceedings of the 3rd symposium on Applied perception in graphics and visualization
Interactive editing and modeling of bidirectional texture functions
ACM SIGGRAPH 2007 papers
AppWand: editing measured materials using appearance-driven optimization
ACM SIGGRAPH 2007 papers
Visual equivalence: towards a new standard for image fidelity
ACM SIGGRAPH 2007 papers
A gaze-based study for investigating the perception of visual realism in simulated scenes
ACM Transactions on Applied Perception (TAP)
A psychophysical study of fixation behavior in a computer game
Proceedings of the 5th symposium on Applied perception in graphics and visualization
A psychophysically validated metric for bidirectional texture data reduction
ACM SIGGRAPH Asia 2008 papers
Bidirectional Texture Function Modeling: A State of the Art Survey
IEEE Transactions on Pattern Analysis and Machine Intelligence
Interactive system for dynamic scene lighting using captured video environment maps
EGSR'05 Proceedings of the Sixteenth Eurographics conference on Rendering Techniques
A psychophysical evaluation of texture degradation descriptors
SSPR&SPR'10 Proceedings of the 2010 joint IAPR international conference on Structural, syntactic, and statistical pattern recognition
Analysis of human gaze interactions with texture and shape
MUSCLE'11 Proceedings of the 2011 international conference on Computational Intelligence for Multimedia Understanding
| Hi-index | 0.00 |
The use of illumination and view-dependent texture information is recently the best way to capture the appearance of real-world materials accurately. One example is the Bidirectional Texture Function. The main disadvantage of these data is their massive size. In this article, we employ perceptually-based methods to allow more efficient handling of these data. In the first step, we analyse different uniform resampling by means of a psychophysical study with 11 subjects, comparing original data with rendering of a uniformly resampled version over the hemisphere of illumination and view-dependent textural measurements. We have found that down-sampling in view and illumination azimuthal angles is less apparent than in elevation angles and that illumination directions can be down-sampled more than view directions without loss of visual accuracy. In the second step, we analyzed subjects gaze fixation during the experiment. The gaze analysis confirmed results from the experiment and revealed that subjects were fixating at locations aligned with direction of main gradient in rendered stimuli. As this gradient was mostly aligned with illumination gradient, we conclude that subjects were observing materials mainly in direction of illumination gradient. Our results provide interesting insights in human perception of real materials and show promising consequences for development of more efficient compression and rendering algorithms using these kind of massive data.