Structured Highlight Inspection of Specular Surfaces
IEEE Transactions on Pattern Analysis and Machine Intelligence
Computer Vision, Graphics, and Image Processing
The information available to a moving observer from specularities
Image and Vision Computing - 4th Alvey Vision Meeting
Shape from shading
Estimation of Illuminant Direction, Albedo, and Shape from Shading
IEEE Transactions on Pattern Analysis and Machine Intelligence
Imaging vector fields using line integral convolution
SIGGRAPH '93 Proceedings of the 20th annual conference on Computer graphics and interactive techniques
Fast and resolution independent line integral convolution
SIGGRAPH '95 Proceedings of the 22nd annual conference on Computer graphics and interactive techniques
Processing images and video for an impressionist effect
Proceedings of the 24th annual conference on Computer graphics and interactive techniques
Proceedings of the 24th annual conference on Computer graphics and interactive techniques
A Theory of Specular Surface Geometry
International Journal of Computer Vision
A non-photorealistic lighting model for automatic technical illustration
Proceedings of the 25th annual conference on Computer graphics and interactive techniques
Painterly rendering with curved brush strokes of multiple sizes
Proceedings of the 25th annual conference on Computer graphics and interactive techniques
IEEE Transactions on Pattern Analysis and Machine Intelligence
An algorithm for automatic painterly rendering based on local source image approximation
NPAR '00 Proceedings of the 1st international symposium on Non-photorealistic animation and rendering
Computer-generated pen-and-ink illustration of trees
Proceedings of the 27th annual conference on Computer graphics and interactive techniques
Acquiring the reflectance field of a human face
Proceedings of the 27th annual conference on Computer graphics and interactive techniques
IEEE Transactions on Pattern Analysis and Machine Intelligence
Proceedings of the 28th annual conference on Computer graphics and interactive techniques
Stylization and abstraction of photographs
Proceedings of the 29th annual conference on Computer graphics and interactive techniques
Automatic image-based pencil sketch rendering
Journal of Computer Science and Technology
Local Analysis for 3D Reconstruction of Specular Surfaces - Part II
ECCV '02 Proceedings of the 7th European Conference on Computer Vision-Part II
Decoupling Strokes and High-Level Attributes for Interactive Traditional Drawing
Proceedings of the 12th Eurographics Workshop on Rendering Techniques
Coupled Lighting Direction and Shape Estimation from Single Images
ICCV '99 Proceedings of the International Conference on Computer Vision-Volume 2 - Volume 2
Cubist Style Rendering from Photographs
IEEE Transactions on Visualization and Computer Graphics
Human facial illustrations: Creation and psychophysical evaluation
ACM Transactions on Graphics (TOG)
Example-based composite sketching of human portraits
Proceedings of the 3rd international symposium on Non-photorealistic animation and rendering
Image and video based painterly animation
Proceedings of the 3rd international symposium on Non-photorealistic animation and rendering
What do reflections tell us about the shape of a mirror?
APGV '04 Proceedings of the 1st Symposium on Applied perception in graphics and visualization
CGIV '04 Proceedings of the International Conference on Computer Graphics, Imaging and Visualization
Perceptually optimizing textures for layered surfaces
APGV '05 Proceedings of the 2nd symposium on Applied perception in graphics and visualization
Highlight lines for conveying shape
Proceedings of the 5th international symposium on Non-photorealistic animation and rendering
IEEE Transactions on Pattern Analysis and Machine Intelligence
Line-art illustration of dynamic and specular surfaces
ACM SIGGRAPH Asia 2008 papers
Image invariants for smooth reflective surfaces
ECCV'10 Proceedings of the 11th European conference on Computer vision: Part II
Enhancement of bright video features for HDR displays
EGSR'08 Proceedings of the Nineteenth Eurographics conference on Rendering
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Many materials including water, plastic, and metal have specular surface characteristics. Specular reflections have commonly been considered a nuisance for the recovery of object shape. However, the way that reflections are distorted across the surface depends crucially on 3D curvature, suggesting that they could, in fact, be a useful source of information. Indeed, observers can have a vivid impression of, 3D shape when an object is perfectly mirrored (i.e., the image contains nothing but specular reflections). This leads to the question what are the underlying mechanisms of our visual system to extract this 3D shape information from a perfectly mirrored object. In this paper we propose a biologically motivated recurrent model for the extraction of visual features relevant for the perception of 3D shape information from images of mirrored objects. We qualitatively and quantitatively analyze the results of computational model simulations and show that bidirectional recurrent information processing leads to better results than pure feedforward processing. Furthermore, we utilize the model output to create a rough nonphotorealistic sketch representation of a mirrored object, which emphasizes image features that are mandatory for 3D shape perception (e.g., occluding contour and regions of high curvature). Moreover, this sketch illustrates that the model generates a representation of object features independent of the surrounding scene reflected in the mirrored object.