A Computational Approach to Edge Detection
IEEE Transactions on Pattern Analysis and Machine Intelligence
An experimental comparison of RGB, YIQ, LAB, HSV, and opponent color models
ACM Transactions on Graphics (TOG)
Painterly rendering with curved brush strokes of multiple sizes
Proceedings of the 25th annual conference on Computer graphics and interactive techniques
Proceedings of the 28th annual conference on Computer graphics and interactive techniques
NPAR '02 Proceedings of the 2nd international symposium on Non-photorealistic animation and rendering
Simplified Approach to Image Processing: Classical and Modern Techniques in C
Simplified Approach to Image Processing: Classical and Modern Techniques in C
Digital Image Processing
Non-photorealistic volume rendering using stippling techniques
Proceedings of the conference on Visualization '02
IEEE Computer Graphics and Applications
Illustrative Interactive Stipple Rendering
IEEE Transactions on Visualization and Computer Graphics
SIGGRAPH '78 Proceedings of the 5th annual conference on Computer graphics and interactive techniques
Fast hierarchical importance sampling with blue noise properties
ACM SIGGRAPH 2004 Papers
Structure-preserving stippling by priority-based error diffusion
Proceedings of Graphics Interface 2011
Generating pointillism paintings based on Seurat's color composition
EGSR '13 Proceedings of the Eurographics Symposium on Rendering
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This paper presents a new stippling technique that effectively represents color images similar to the stippling works of artists. First, the proposed method creates a reference image from combining a smoothed image and with an edge image of the source. The color density function, defined by analyzing the information from the HSV color model of the reference image, is applied to the automatic computation of the number, size, and position of the points. Then, we use the weighted Penrose-based importance sampling to make points to be distributed randomly but almost evenly spaced in accordance with the color density within few seconds. In addition, our color jittering can generate efficiently stippling drawings having various colors. For more artistic representation, the points are transformed into the oval-shaped ones and their orientations are defined according to the direction field of color image. Our application areas include animation, digital art, and video processing.