A note on the gradient of a multi-image
Computer Vision, Graphics, and Image Processing - Lectures notes in computer science, Vol. 201 (G. Goos and J. Hartmanis, Eds.)
Paint by numbers: abstract image representations
SIGGRAPH '90 Proceedings of the 17th annual conference on Computer graphics and interactive techniques
Edge detection in multispectral images
CVGIP: Graphical Models and Image Processing
General filtered image rescaling
Graphics Gems III
Painterly rendering with curved brush strokes of multiple sizes
Proceedings of the 25th 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
IEEE Computer Graphics and Applications
SIGGRAPH '83 Proceedings of the 10th annual conference on Computer graphics and interactive techniques
Bilateral Filtering for Gray and Color Images
ICCV '98 Proceedings of the Sixth International Conference on Computer Vision
Image and video based painterly animation
Proceedings of the 3rd international symposium on Non-photorealistic animation and rendering
ACM SIGGRAPH 2004 Papers
Stroke Surfaces: Temporally Coherent Artistic Animations from Video
IEEE Transactions on Visualization and Computer Graphics
Proceedings of the 4th international symposium on Non-photorealistic animation and rendering
ACM SIGGRAPH 2006 Papers
Proceedings of the 5th international symposium on Non-photorealistic animation and rendering
Structure-preserving manipulation of photographs
Proceedings of the 5th international symposium on Non-photorealistic animation and rendering
IEEE Transactions on Visualization and Computer Graphics
GradientShop: A gradient-domain optimization framework for image and video filtering
ACM Transactions on Graphics (TOG)
Artistic Edge and Corner Enhancing Smoothing
IEEE Transactions on Image Processing
Texture-preserving abstraction
NPAR '12 Proceedings of the Symposium on Non-Photorealistic Animation and Rendering
Abstract painting with interactive control of perceptual entropy
ACM Transactions on Applied Perception (TAP)
Interactive GA flock brush for non-photorealistic rendering
SEAL'12 Proceedings of the 9th international conference on Simulated Evolution and Learning
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The anisotropic Kuwahara filter is an edge-preserving filter that is especially useful for creating stylized abstractions from images or videos. It is based on a generalization of the Kuwahara filter that is adapted to the local structure of image features. In this work, two limitations of the anisotropic Kuwahara filter are addressed. First, it is shown that by adding thresholding to the weighting term computation of the sectors, artifacts are avoided and smooth results in noise-corrupted regions are achieved. Second, a multi-scale computation scheme is proposed that simultaneously propagates local orientation estimates and filtering results up a low-pass filtered pyramid. This allows for a strong abstraction effect and avoids artifacts in large low-contrast regions. The propagation is controlled by the local variances and anisotropies that are derived during the computation without extra overhead, resulting in a highly efficient scheme that is particularly suitable for real-time processing on a GPU.