Apparatus and method to locate an object

Details Apparatus and method to locate an object Apparatus and method to locate an object

2007-12-11

2007-12-11

Do, Anh Hong (Department: 2624)

Image analysis

Pattern recognition

Template matching

C382S287000

Reexamination Certificate

active

10492900

ABSTRACT:
Method and arrangement to locate an object with a predetermined number of marks, the arrangement comprising a light source, a sensor and a processor, by means of the following steps:—illuminating the object with the light source;—receiving an image of the object and generate image pixel data including image pixel locations and image pixel intensities for each image pixel location with said sensor;—receiving the image pixel data and storing them in a memory;—comparing said image pixel intensities with a predetermined threshold;—determining object position based on said comparing;—using a digital match mask that corresponds with said object with said marks;—finding a best match between said digital match mask and said object on said object position;—determining mark positions within said object position from said best match.

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