Animal identification system based on irial granule analysis
AssigneeOki Electric Industry Co., Ltd.
InventorsMasahiko Suzaki, Yuji Kuno
Life of this patent
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Abstract
An animal identification system is provided which is designed to determine outlines of a pupil and irial granule in an input image of an eye of an animal to be identified, apply an arc to a lower portion of the outline of the pupil, turns back the arc from a principal axis to define a reference axis, and maps an image of the irial granule into a polar coordinate system whose origin is the center of the reference axis. The shape of the irial granule corrected in the above manner is compared with a reference shape stored in a memory to determine whether the input image arises from the same animal or not.
Claims5
An animal identification apparatus comprising:
- an outline extracting circuit that extracts from an image of an eye of an animal to be identified including a pupil and an irial granule an outline of said pupil;
- an arc application processing circuit that determines an arc approximate to a specified portion of said extracted outline;
- an irial granule deforming circuit that deforms the irial granule in said image according to the degree of deformation of said arc up to a reference level;
- and
- a storage that registers data on said deformed irial granule of the animal to be registered.
An animal identification method comprising the steps of:
- extracting from an image of an eye of an animal to be identified including a pupil and an irial granule an outline of said pupil;
- applying an approximate arc to a specified portion of said extracted outline;
- deforming the irial granule in said image according to the degree of deformation of said arc up to a reference level;
- and
- registering data on said deformed irial granule of the animal in a storage.
Dependencies are inferred from the claim text.