Real-time animated stippling

Pastor, Oscar Meruvia; Freudenberg, Bert; Strothotte, Thomas

doi:10.1109/mcg.2003.1210866

Cited by 36 publications

(29 citation statements)

References 7 publications

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“…The placement of stipple dots in 3D space creates a unique challenge for these techniques because the viewer ultimately perceives the point distribution on the 2D plane. Related to this issue, animation of stippled surfaces [Meruvia Pastor et al 2003;Vanderhaeghe et al 2007] presents an additional challenge as the stipples have to properly move with the changing object surface to avoid the shower-door effect. A special case of stippling of 3D models is the computation in a geometry-image domain [Yuan et al 2005] where the stippling is computed on a 2D geometry image onto which the 3D surface is mapped.…”

Section: Related Workmentioning

confidence: 99%

Example-based stippling using a scale-dependent grayscale process

Martín

Arroyo

Luzón

et al. 2010

Proceedings of the 8th International Symposium on Non-Photorealistic Animation and Rendering - NPAR 10

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We present an example-based approach to synthesizing stipple illustrations for static 2D images that produces scale-dependent results appropriate for an intended spatial output size and resolution. We show how treating stippling as a grayscale process allows us to both produce on-screen output and to achieve stipple merging at medium tonal ranges. At the same time we can also produce images with high spatial and low color resolution for print reproduction. In addition, we discuss how to incorporate high-level illustration considerations into the stippling process based on discussions with and observations of a stipple artist. The implementation of the technique is based on a fast method for distributing dots using halftoning and can be used to create stipple images interactively.

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Section: Related Workmentioning

confidence: 99%

Example-based stippling using a scale-dependent grayscale process

Martín

Arroyo

Luzón

et al. 2010

Proceedings of the 8th International Symposium on Non-Photorealistic Animation and Rendering - NPAR 10

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show abstract

“…Each mark is then attached to a 3D anchor point on the 3D object that it depicts. Although this approach has been extended to numerous styles (painterly [Daniels 1999;Vanderhaeghe et al 2007], stippling [Pastor et al 2003], watercolor [Bousseau et al 2006]), the data structure required to manage the anchor points and the expensive rendering of each individual style element makes this family of methods not well-suited for real-time rendering engines.…”

Section: Previous Workmentioning

confidence: 99%

Dynamic solid textures for real-time coherent stylization

Bénard

Bousseau

Thollot

2009

Proceedings of the 2009 Symposium on Interactive 3D Graphics and Games

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Figure 1: Dynamic solid textures (on the left) serve as a basis to create a large range of temporally coherent styles. From left to right: a complex scene (538k tris) is rendered in real-time in a watercolor style, a collage style and a binary style. AbstractStylized rendering methods, which aim at depicting 3D scenes with 2D marks such as pigments or strokes, are often faced with temporal coherence issues when applied to dynamic scenes. These issues arise from the difficulty of having to satisfy two contrary goals: ensuring that the style marks follow 3D motions while preserving their 2D appearance. In this paper we describe a new texture based method for real-time temporally coherent stylization called dynamic textures. A dynamic texture is a standard texture mapped on the object and enriched with an infinite zoom mechanism. This simple and fast mechanism maintains quasi-constant size and density of texture elements in screen space for any distance from the camera. We show that these dynamic textures can be used in many stylization techniques, enforcing the 2D appearance of the style marks while preserving the accurate 3D motion of the depicted objects.Although our infinite zoom technique can be used with both 2D or 3D textures, we focus in this paper on the 3D case (dynamic solid textures) which avoids the need for complex parameterizations of 3D surfaces. This makes dynamic textures easy to integrate in existing rendering pipelines with almost no loss in performance, as demonstrated by our implementation in a game rendering engine.

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“…In recent years, works have focused on the improvement of existing techniques [6,7,8,9,10,11] or on the development of new techniques for trying to communicate a concept more comprehensively by means of perceptual principles, artistic techniques, and composition and design principles [12,13,14,15,16]. Other works have been interested in the simplification of existing systems, trying to reduce their computational times through new software techniques or hardware implementation [17,18,19,20].…”

Section: Introductionmentioning

confidence: 99%

Sgraffito simulation through image processing

Guerrero

Serón

2011

SPIE Proceedings

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This paper presents a tool for simulating the traditional Sgraffito technique through digital image processing. The tool is based on a digital image pile and a set of attributes recovered from the image at the bottom of the pile using the Streit and Buchanan multiresolution image pyramid. This technique tries to preserve the principles of artistic composition by means of the attributes of color, luminance and shape recovered from the foundation image. A couple of simulated scratching objects will establish how the recovered attributes have to be painted. Different attributes can be painted by using different scratching primitives. The resulting image will be a colorimetric composition reached from the image on the top of the pile, the color of the images revealed by scratching and the inner characteristics of each scratching primitive. The technique combines elements of image processing, art and computer graphics allowing users to make their own free compositions and providing a means for the development of visual communication skills within the user-observer relationship. The technique enables the application of the given concepts in non artistic fields with specific subject tools.

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Real-time animated stippling

Cited by 36 publications

References 7 publications

Example-based stippling using a scale-dependent grayscale process

Example-based stippling using a scale-dependent grayscale process

Dynamic solid textures for real-time coherent stylization

Sgraffito simulation through image processing

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