M. Levoy. Polygon-assisted JPEG and MPEG compression of synthetic images. SIGGRAPH, 29:21--28, 1995.  Home/Search   Document Details and Download   Summary   Related Articles   Check

....samples, but that adds to the storage and bandwidth complexity. Given the storage complexity, different compression techniques have been applied to image based representations. These include motion estimation and compensation techniques used to encode synthetic or parameterized animations [1, 6, 12, 16, 30]. These have been designed for streaming over a network. The resulting application is different from interactive walkthroughs, where the constraints imposed by faithful response to user spontaneity are different from pre recorded videos or synthetic animations. Some impostor based rendering ....

.... vectors using the Gouraud interpolation or texture mapping hardware [30] and accounting for non translational block motion using a least squares formulation [1] Other approaches include partitioning the rendering task between the server and the client and using polygon assisted compression [16] as well as algorithms for texture intensive streaming applications that use pre computed view dependent textures [6] An approach for arbitrary dimensional parameterized animations that uses the texture mapping rasterization hardware for decoding has been presented in [12] All of these ....

Marc Levoy. Polygon-assisted JPEG and MPEG compression of synthetic images. In SIGGRAPH 95 Conference Proceedings, pages 21--28, 1995.

....human figures or faces as well as rigid body transformations to efficiently encode dynamic meshes. Dealing with general dynamic meshes as in this paper was postponed for later dates. Moreover, 3D geometry compression either concentrate on static meshes [21, 22] or assume low geometry bandwidth [12, 23]. In [11] a method is proposed for compression of time dependent geometry. The vertex positions matrix is decomposed into # # # # #, where P is the time interpolation, V is the vertex positions at key time steps and G is the geometry or spatial interpolation. The gross movement of the geometric ....

M. Levoy. Polygon-assisted jpeg and mpeg compression of synthetic images. In ACM Computer Graphics Proceedings, SIGGRAPH'95, pages 21--28, 1995.

....web, which utilizes both the server and the client simultaneously. The client generates (extrapolates) the new views based on the locally available data, while the server transmits only the data necessary to prevent an accumulation of errors. The Polygonassisted compression introduced by Levoy [10] was previously suggested to partition the rendering task between the server and the client. The client renders a low quality image and receives from the server the compressed difference image between the high quality and the low quality. This requires the transmission of the difference image for ....

....images, camera position and range data. Since the client cannot extrapolate the exact new view, the server needs to transmit the difference (image) between the client approximated view and the exact new view. The difference image is better compressed and reduces the network transmission volume [10]. Moreover, the server does not need to correct the clientextrapolated image in every frame, but at lower frequencies than the client frame rate, to further reduce the network requirements. A novel view number a i is an extrapolation of a reference view number a. The server needs to transmit ....

Marc Levoy. Polygon-Assisted JPEG and MPEG Compression of Synthetic Images. Computer Graphics ( SIGGRAPH '95 Proceeding ), 21-28, August 1995.

....progress towards an automatic technique for capturing depth of large real world scenes. Many image based rendering algorithms are based on 2D image samples and the resulting reconstruction algorithms generate a lower dimensional approximation of the plenoptic function from these samples. In [17], a regular array of camera images are used as samples for reconstructing a 4D plenoptic function for a scene. They use a dual plane parameterization of the plenoptic function. A similar dual plane parameterization of a 4D plenoptic function is used in [10] and is combined with a low fidelity ....

M. Levoy. Polygon-assisted JPEG and MPEG compression of synthetic images. In SIGGRAPH 95 Conference Proceedings, pages 21--28, 1995.

....a few frames per second cannot be achieved. A significant improvement in compression ratio is still necessary for streaming video in realtime. Synthetic animations have higher potential to be compressed than general video since more information is readily available for the compression algorithms [2, 12, 22]. Assuming, for example, Computer Science Department, Tel Aviv University 69978, Israel. E mail: fdaniel, shacharfg math.tau.ac.il Webglide Ltd. E mail yair webglide.com that the geometric model and the animation script are relatively small, one can consider them as the compressed sequence, ....

....the optical flow faster or more accurately [2, 22] These model based motion estimation techniques improve the compression ratio, but the overhead of the block based motion approximation is still too high for streaming acceptable image quality. A different approach was introduced by Levoy [12]. Instead of compressing post rendered images, it is possible to render the animation on the fly at both ends of the communication. The rendering task is partitioned between the server (sender) and client (receiver) Assuming the server is a high end graphics workstation, it can render high and ....

M. Levoy. Polygon-assisted JPEG and MPEG compression of synthetic images. Computer Graphics ( SIGGRAPH '95 Proceeding ), 21--28, August 1995.

....adds to the storage and bandwidth complexity. Given the storage complexity, different compression techniques have been applied to image based representations. These include motion estimation and compensation techniques used to encode synthetic or parameterized animations [ABC95, COMF99, HLS00, Lev95, WKC94] These have been designed for streaming over a network. The resulting application is different from interactive walkthroughs, where the constraints imposed by faithful response to user spontaneity are different from pre recorded videos or synthetic animations. Some impostor based ....

.... using the Gouraud interpolation or texture mapping hardware [WKC94] and accounting for non translational block motion using a least squares formulation [ABC95] Other approaches include partitioning the rendering task between the server and the client and using polygon assisted compression [Lev95] as well as algorithms for texture intensive streaming applications that use pre computed view dependent textures [COMF99] An approach for arbitrary dimensional parameterized animations that uses the texture mapping rasterization hardware for decoding has been presented in [HLS00] All of these ....

Marc Levoy. Polygon-assisted JPEG and MPEG compression of synthetic images. In SIGGRAPH 95 Conference Proceedings, pages 21--28, 1995.

....image is sparse and has low entropy, so compression of the residual with entropy coding methods achieves a factor of 1.4 over JPEG performance. In a compression strategy targeted at remote rendering, a high performance graphics engine acts as a server, and a low end workstation as a remote client [Levoy95]. The client renders low quality images while the server renders both low and highquality images, transmitting only compressed residual images to the client. This approach assumes that the client first receives a copy (or simplified version) of the scene data before rendering begins. The server ....

M. Levoy, "Polygon-Assisted JPEG and MPEG Compression of Synthetic Images", Computer Graphics, (Proc. SIGGRAPH 95 pp 21-28)

....browsing. To generate the VRML files in real time, the VRML files tend towards low complexity Yoon and Neumann IBRAC The Eurographics Association and Blackwell Publishers 2000. for fast computation, transmission and rendering, meaning coarse models with low detail geometries and texture. In [Levoy95], a high performance graphics engine acts as a server, and a low end workstation as a remote client. The client renders low quality images while the server renders both low and high quality images, transmitting only compressed residual images to the client. This approach assumes that the client ....

M. Levoy, "Polygon-Assisted JPEG and MPEG Compression of Synthetic Images", Computer Graphics, (Proc. SIGGRAPH 95 pp 21-28)

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M. Levoy. Polygon-assisted JPEG and MPEG compression of synthetic images. SIGGRAPH, 29:21--28, 1995.

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M. Levoy. Polygon-assisted JPEG and MPEG compression of synthetic images. Computer Graphics ( SIGGRAPH '95 Proceeding ), 21--28, August 1995.

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Marc Levoy. Polygon-assisted JPEG and MPEG compression of synthetic images. In Robert Cook, editor, SIGGRAPH 95 Conference Proceedings, Annual Conference Series, pages 21-- 28. ACM SIGGRAPH, Addison Wesley, August 1995.

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Levoy, M., "Polygon-Assisted JPEG and MPEG compression of Synthetic Images," SIGGRAPH 95, August 1995, pp. 21-28.

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Marc Levoy. Polygon-Assisted JPEG and MPEG Compression of Synthetic Images. Computer Graphics ( SIGGRAPH '95 Proceeding ), 21-28, August 1995.

No context found.

M. Levoy, "Polygon-Assisted JPEG and MPEG Compression of Synthetic Images", Computer Graphics, (Proc. SIGGRAPH 95 pp 21-28)

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