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Topological image model

A model, computer model technology, applied in the field of computer model equipment, compression model compression

Inactive Publication Date: 2005-09-07
QUALCOMM INC
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

A disadvantage of current MPEG4 compression systems is that there is no satisfactory method for automatically simulating the voxel representation of 3D objects in a video cube

Method used

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Embodiment Construction

[0064] figure 1 The second step of the transformation method in is to obtain a computer representation, eg a voxel representation of an N-dimensional object. It is likely that segmentation step 3 is performed before the acquisition step, where objects are segmented from a video cube. Segmentation is to assign only one object to each pixel in the video cube. Algorithms for segmenting a 3D video cube can be derived in a straightforward manner from 2D image patches as described in the literature. One possible algorithm is to assign eg a cube of 8x8x8 voxels to an identical tile when the criteria indicate that they are of the same kind with respect to the selected features. An example of a feature is the gray value associated with a voxel. A standard example is the histogram absolute difference G related to the two cubes of a voxel:

[0065] G = Σ i = 1 M ...

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Abstract

Method of transforming a voxel representation of an N-dimensional object into a computer model containing a cellular space, which is a specific form of graph. An indicator attached to each edge of the cellular space indicates whether a border belongs to an object. This is useful for three-dimensional compression of video sequences and for Internet video sequence search.

Description

technical field [0001] The invention relates to a method of converting a computer representation of an N-dimensional first object into a computer model of the first object. [0002] The invention also relates to compression methods for converting a computer representation of an N-dimensional object into a compressed model of the object. [0003] The invention also relates to a method of decompressing a compressed video signal into a computer representation of an N-dimensional object. [0004] The invention also relates to a method of converting a first unit space model having a first plurality of units into a second unit space model having a second plurality of units. [0005] The invention also relates to a computer program for carrying out the method of converting an N-dimensional computer representation of a first object into a computer model of the first object. [0006] The invention also relates to a computer program for implementing a compression method for converting...

Claims

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Application Information

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IPC IPC(8): G06T9/00H04N7/26
CPCG06T9/001G06T9/00G06T15/00
Inventor C·W·A·M·范奥维德F·E·埃恩斯特P·-A·雷德特R·P·A·罗德里古斯P·维林斯基
Owner QUALCOMM INC
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