Real-time, all-frequency shadows in dynamic scenes

Annen, Thomas; Zhang, Dong; Mertens, Tom; Bekaert, Philippe; Seidel, Hans‐Peter; Kautz, Jan

doi:10.1145/1360612.1360633

Cited by 87 publications

(92 citation statements)

References 32 publications

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“…However, illumination with an area [3]. Fernando [1] used the positions of the light source, occluders, and a receiver to estimate a width of the penumbra for every pixel.…”

Section: Related Workmentioning

confidence: 99%

“…In order to solve this problem, a filter area is adaptively subdivided according to the variation of shadow in the filter area. Annen et al [3] pre-filtered a shadow map by estimating the results of the shadow map test with Fourier series, as their previous work [5] did. [5] focused on anti-aliasing, but [3] handled all-frequency shadow effects in real-time.…”

Section: Related Workmentioning

confidence: 99%

“…Annen et al [3] pre-filtered a shadow map by estimating the results of the shadow map test with Fourier series, as their previous work [5] did. [5] focused on anti-aliasing, but [3] handled all-frequency shadow effects in real-time. For this, they exploited an average depth value of occluders in a filter area to compute an optimal filter size.…”

Section: Related Workmentioning

confidence: 99%

“…The intersection on the shadow map is the initial filter area. The initial filter size can be optimized by using the average depth value of occluders in the filter area, as mentioned in Annen's previous work [3]. Each pixel has its own optimized filter, which allows us to generatet all-frequency shadow effects by averaging visibility values.…”

Section: Algorithms and Implementationmentioning

confidence: 99%

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An Efficient Soft Shadow Mapping for Area Lights in Various Shapes and Colors

2017

IEICE Trans. Inf. & Syst.

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“…However, illumination with an area [3]. Fernando [1] used the positions of the light source, occluders, and a receiver to estimate a width of the penumbra for every pixel.…”

Section: Related Workmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

Section: Algorithms and Implementationmentioning

confidence: 99%

See 2 more Smart Citations

An Efficient Soft Shadow Mapping for Area Lights in Various Shapes and Colors

2017

IEICE Trans. Inf. & Syst.

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show abstract

“…Thus we take a different approach to compress the transfer matrix. Recently, an all-frequency shadow algorithm for dynamic scenes has been proposed [30]. Global incident radiance is approximated by a small number of area light sources, and extended convolution shadow maps [31] are used to render the shadows generated by each of these light sources.…”

Section: Related Workmentioning

confidence: 99%

Radiance Transfer Biclustering for Real-Time All-Frequency Biscale Rendering

Sun

Hou

Ren

et al. 2011

IEEE Trans. Visual. Comput. Graphics

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Abstract-We present a real-time algorithm to render all-frequency radiance transfer at both macroscale and mesoscale. At a mesoscale, the shading is computed on a per-pixel basis by integrating the product of the local incident radiance and a bidirectional texture function. While at a macroscale, the precomputed transfer matrix, which transfers the global incident radiance to the local incident radiance at each vertex, is losslessly compressed by a novel biclustering technique. The biclustering is directly applied on the radiance transfer represented in a pixel basis, on which the BTF is naturally defined. It exploits the coherence in the transfer matrix and a property of matrix element values to reduce both storage and runtime computation cost. Our new algorithm renders at real-time frame rates realistic materials and shadows under all-frequency direct environment lighting. Comparisons show that our algorithm is able to generate images that compare favorably with reference ray tracing results, and has obvious advantages over alternative methods in storage and preprocessing time.

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Interactive shadowing for 2D Anime

Sugisaki

Seah²,

Tian³

et al. 2009

Computer Animation & Virtual

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In this paper, we propose an instant shadow generation technique for 2D animation, especially Japanese Anime. In traditional 2D Anime production, the entire animation including shadows is drawn by hand so that it takes long time to complete. Shadows play an important role in the creation of symbolic visual effects. However shadows are not always drawn due to time constraints and lack of animators especially when the production schedule is tight. To solve this problem, we develop an easy shadowing approach that enables animators to easily create a layer of shadow and its animation based on the character's shapes. Our approach is both instant and intuitive. The only inputs required are character or object shapes in input animation sequence with alpha value generally used in the Anime production pipeline. First, shadows are automatically rendered on a virtual plane by using a Shadow Map 1 based on these inputs. Then the rendered shadows can be edited by simple operations and simplified by the Gaussian Filter. Several special effects such as blurring can be applied to the rendered shadow at the same time. Compared to existing approaches, ours is more efficient and effective to handle automatic shadowing in real-time.

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Real-time, all-frequency shadows in dynamic scenes

Abstract: Figure 1: A fully dynamic animation of a dancing robot under environment map lighting rendered at 29.4 fps without any precomputation. Incident radiance is approximated by 30 area light sources (256 × 256 shadow map resolution each).

Cited by 87 publications

References 32 publications

An Efficient Soft Shadow Mapping for Area Lights in Various Shapes and Colors

An Efficient Soft Shadow Mapping for Area Lights in Various Shapes and Colors

Radiance Transfer Biclustering for Real-Time All-Frequency Biscale Rendering

Interactive shadowing for 2D Anime

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