Data processing: measuring – calibrating – or testing – Measurement system – Orientation or position
Patent
1998-06-23
2000-08-22
Shah, Kamini
Data processing: measuring, calibrating, or testing
Measurement system
Orientation or position
348813, 235469, 235494, G06K 1906
Patent
active
061086126
ABSTRACT:
Disclosed is a method of finding a reference object within a coded object having a plurality of regions. Each region has a plurality of subregions, and at least a majority of a first one of the subregions has a different color from a second one of the subregions. The reference object has a known relative position to other objects within the coded object so that the reference object is utilizable to locate the other objects within the coded object. A first one of the subregions within a selected one of the regions within the coded object is selected. A first region and a second region within the coded object are also selected. The selected first and second region form a plurality of subregion pairs. Each subregion pair includes a subregion from the seleced first region and a subregion from the selected second region. Luminosity values of the subregions within each subregion pair are compared. It is determined whether the selected subregion is the reference object based on the comparisons of the luminosity values for each subregion pair.
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Leplumey et al., "Kalman Filter Contributions towards document Segmentation", IEEE, Sep. 1995.
Viard-Gaudin et al., "A Bar Code location algorithm using a two-dimensional Approach", IEEE, Sep. 1995.
Covell Michele M.
Piernot Philippe P.
Saunders Steven E.
Slaney Malcolm G.
Vescovi Marcos R.
Interval Research Corporation
Shah Kamini
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