Center of mass detection via an active pixel sensor

Details Center of mass detection via an active pixel sensor Center of mass detection via an active pixel sensor

2005-12-27

2005-12-27

Lee, Young (Department: 2613)

Television

Object tracking

Centroidal tracking

C348S302000

Reexamination Certificate

active

06980230

ABSTRACT:
An imaging system for identifying the location of the center of mass (“COM”) in an image. In one aspect, an imaging system includes a plurality of photosensitive elements arranged in a matrix. A center of mass circuit coupled to the photosensitive elements includes a resistive network and a normalization circuit including at least one bipolar transistor. The center of mass circuit identifies a center of mass location in the matrix and includes: a row circuit, where the row circuit identifies a center of mass row value in each row of the matrix and identifies a row intensity for each row; a horizontal circuit, where the horizontal circuit identifies a center of mass horizontal value; and a vertical circuit, where the vertical circuit identifies a center of mass vertical value. The horizontal and vertical center of mass values indicate the coordinates of the center of mass location for the image.

REFERENCES:
M. Tartagni and P. Perona; Computing centroids in current-mode technique; Aug. 5, 1993; IEE, Electronics Letters Online No. 19931188.

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