Data analysis device and data recognition device

Details Data analysis device and data recognition device Data analysis device and data recognition device

2004-03-02

2008-10-14

Tran, Phuoc (Department: 2624)

Image analysis

Histogram processing

With pattern recognition or classification

C382S195000, C382S260000

Reexamination Certificate

active

07436999

ABSTRACT:
The data analysis device100includes: difference calculation means (S2) for, with respect to an image, carrying out a calculation of calculating a difference between intensity values at an arbitrary point in the image and a point located in the vicinity of the arbitrary point in a first direction as a first intensity difference of the arbitrary point and of calculating a difference between intensity values at the arbitrary point and a point located in the vicinity of the arbitrary point in a second direction different from the first direction as a second intensity difference of the arbitrary point, the difference calculation means carrying out the calculation with respect to each of a plurality of points in the image; and frequency distribution generation means (S3to S5) for quantizing a vector comprising the first intensity difference and the second intensity difference obtained by the difference calculation means for each of the plurality of points in the image into a single region of a plurality of regions (regions represented by the index numbers 0 to 49 of the quantization table in FIG.4) divided by a predetermined region division method and generating a frequency distribution of the plurality of regions by using the number of vectors quantized for each of the plurality of regions as frequency of the corresponding region.

REFERENCES:
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patent: 7162076 (2007-01-01), Liu
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patent: 2000-101437 (2000-04-01), None
patent: 2002-203241 (2002-07-01), None
K. Kotani et al., “Face Recognition Using Vector Quantization Histogram Method,” IEEE International Conference on Image Processing, 2002, pp. II-105-II-108.

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