Navigating static environments using image-space simplification and morphing

Darsa, Lucia; Costa-Silva, Bruno; Varshney, Amitabh

doi:10.1145/253284.253298

Cited by 75 publications

(44 citation statements)

References 33 publications

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“…Mark et al [17] and Darsa et al [4] create triangulated depth maps from input images with per-pixel depth. Darsa concentrates on limiting the number of triangles by looking for depth coherence across regions of pixels.…”

Section: Previous Workmentioning

confidence: 99%

Layered depth images

Shade

Gortler

et al. 1998

Proceedings of the 25th Annual Conference on Computer Graphics and Interactive Techniques - SIGGRAPH '98

921

547

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In this paper we present a set of efficient image based rendering methods capable of rendering multiple frames per second on a PC. The first method warps Sprites with Depth representing smooth surfaces without the gaps found in other techniques. A second method for more general scenes performs warping from an intermediate representation called a Layered Depth Image (LDI). An LDI is a view of the scene from a single input camera view, but with multiple pixels along each line of sight. The size of the representation grows only linearly with the observed depth complexity in the scene. Moreover, because the LDI data are represented in a single image coordinate system, McMillan's warp ordering algorithm can be successfully adapted. As a result, pixels are drawn in the output image in backto-front order. No z-buffer is required, so alpha-compositing can be done efficiently without depth sorting. This makes splatting an efficient solution to the resampling problem.

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Section: Previous Workmentioning

confidence: 99%

Layered depth images

Shade

Gortler

et al. 1998

Proceedings of the 25th Annual Conference on Computer Graphics and Interactive Techniques - SIGGRAPH '98

921

547

View full text Add to dashboard Cite

show abstract

“…Darsa et al [2], Mark et al [14] and Pulli et al [18] use a triangle mesh overlaid on the image sampling plane for rendering. It can be followed by a screen space compositing process.…”

Section: Related Workmentioning

confidence: 99%

Differential Point Rendering

Kalaiah

Varshney

2001

Eurographics

Self Cite

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Abstract. We present a novel point rendering primitive, called Differential Point (DP), that captures the local differential geometry in the vicinity of a sampled point. This is a more general point representation that, for the cost of a few additional bytes, packs much more information per point than the traditional point-based models. This information is used to efficiently render the surface as a collection of local neighborhoods. The advantages to this representation are manyfold: (1) it delivers a significant reduction in the number of point primitives that represent a surface (2) it achieves robust hardware accelerated per-pixel shading -even with no connectivity information (3) it offers a novel point-based simplification technique that has a convenient and intuitive interface for the user to efficiently resolve the speed versus quality tradeoff. The number of primitives being equal, DPs produce a much better quality of rendering than a pure splatbased approach. Visual appearances being similar, DPs are about two times faster and require about ± less disk space in comparison to splatting primitives.

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“…Usually, keyframes are placed manually [9], uniformly distributed along the animation time code [24], or distributed in space at the nodes of some 2D or 3D lattice [5]. A notable exception is contained in the work done by Nimeroff et al [28], who introduced a quality criterion which guides keyframe placement in space.…”

Section: In-between Frame Generationmentioning

confidence: 99%

Perception-based fast rendering and antialiasing of walkthrough sequences

Rokita

Tawara

2000

IEEE Trans. Visual. Comput. Graphics

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AbstractÐIn this paper, we consider accelerated rendering of high quality walkthrough animation sequences along predefined paths. To improve rendering performance, we use a combination of a hybrid ray tracing and Image-Based Rendering (IBR) technique and a novel perception-based antialiasing technique. In our rendering solution, we derive as many pixels as possible using inexpensive IBR techniques without affecting the animation quality. A perception-based spatiotemporal Animation Quality Metric (AQM) is used to automatically guide such a hybrid rendering. The Image Flow (IF) obtained as a byproduct of the IBR computation is an integral part of the AQM. The final animation quality is enhanced by an efficient spatiotemporal antialiasing which utilizes the IF to perform a motioncompensated filtering. The filter parameters have been tuned using the AQM predictions of animation quality as perceived by the human observer. These parameters adapt locally to the visual pattern velocity.

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Navigating static environments using image-space simplification and morphing

Cited by 75 publications

References 33 publications

Layered depth images

Layered depth images

Differential Point Rendering

Perception-based fast rendering and antialiasing of walkthrough sequences

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