Method and system to segment depth images and to detect...

Details Method and system to segment depth images and to detect... Method and system to segment depth images and to detect...

2011-08-30

2011-08-30

Lu, Tom Y (Department: 2624)

Image analysis

Applications

Range or distance measuring

C382S103000, C382S154000, C382S173000, C382S180000, C382S181000, C382S203000, C382S204000, C382S224000, C382S225000, C356S003010, C356S004010, C356S005010, C250S559290, C250S559380, C250S559070

Reexamination Certificate

active

08009871

ABSTRACT:
A method and system analyzes data acquired by image systems to more rapidly identify objects of interest in the data. In one embodiment, z-depth data are segmented such that neighboring image pixels having similar z-depths are given a common label. Blobs, or groups of pixels with a same label, may be defined to correspond to different objects. Blobs preferably are modeled as primitives to more rapidly identify objects in the acquired image. In some embodiments, a modified connected component analysis is carried out where image pixels are pre-grouped into regions of different depth values preferably using a depth value histogram. The histogram is divided into regions and image cluster centers are determined. A depth group value image containing blobs is obtained, with each pixel being assigned to one of the depth groups.

REFERENCES:
patent: 6580496 (2003-06-01), Bamji et al.
patent: 2003/0169906 (2003-09-01), Gokturk et al.
patent: 2005/0058322 (2005-03-01), Farmer et al.
patent: 2006/0056689 (2006-03-01), Wittebrood et al.
Cheng et al., “A hierarchical approach to color image segmentation using homogeneity”, Image Processing, IEEE Transactions on Image Processing, IEEE, vol. 9, Issue 12, pp. 2071-2082.

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