Image processing method, three-dimensional position...

Details Image processing method, three-dimensional position... Image processing method, three-dimensional position...

2006-03-13

2010-06-22

Werner, Brian P (Department: 2624)

Image analysis

Applications

3-d or stereo imaging analysis

C382S173000, C382S199000, C358S538000

Reexamination Certificate

active

07742634

ABSTRACT:
An object of this invention is to provide an image processing method and image processing apparatus capable of extracting the position of an object in the unit of sub-pixel. An edge pixel, density gradient direction and edge position in the unit of sub-pixel are extracted from a model image obtained by photographing a high-quality model of the object and registered in a hard disk. After a processing object image is inputted, CPU obtains a position of an image region corresponding to the model image and after that, extracts an edge pixel whose edge position in the unit of sub-pixel is related to a corresponding pixel on the model image side in that image region. The edge position in the unit of sub-pixel is extracted for these edge pixels and the quantity of deviation between the extracting position and the edge position on the model image side is calculated. The position in the unit of pixel is corrected with an average value of the quantity of deviation obtained for each edge pixel so as to obtain a real position of the object.

REFERENCES:
patent: 2004/0105579 (2004-06-01), Ishii et al.
patent: 2002-230549 (2002-08-01), None
patent: 2002230549 (2002-08-01), None

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