Method and apparatus for efficient client-server...

Details Method and apparatus for efficient client-server... Method and apparatus for efficient client-server...

2008-06-06

2011-11-22

Tung, Kee M (Department: 2628)

Computer graphics processing and selective visual display system

Computer graphics processing

Three-dimension

C382S240000, C382S248000, C382S278000

Reexamination Certificate

active

08063901

ABSTRACT:
In response to a request from a client, a server for volume rendering loads a volume dataset from a storage archive, creates a low resolution sub-sampled copy of such volume dataset and transmits it to a client. In response to subsequent requests from the client, the server for volume rendering renders a high quality image of the full resolution volume dataset and renders a low quality image of the sub-sampled copy of the volume dataset, then generates a pixel mask or a hybrid pixel mask indicative of a difference between the high quality image and the low quality image and transmits such pixel mask to the client. The client receives from the server the pixel mask and computes a high quality image based at least in part on the pixel mask and on a selective rendering of its local low resolution sub-sampled copy of the volume dataset.

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Yaniv Zigel, Arnon Cohen, and Amos Katz, “ECG Signal Compression Using Analysis by Synthesis Coding”, Oct. 2000, IEEE Transactions on Biomedical Engineering, vol. 47, No. 10, pp. 1308-1316.
Engel, K., et al., “Combining Local and Remote Visualization Techniques for Interactive Volume Rendering in Medical Applications”, Proc. IEEE Visualization, 2000, 449-452.
Levoy, M., “Display of Surfaces from Volume Data”, IEEE Computer Graphics and Applications, 1988, 29-37.

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