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Patent Searching and Data


Title:
DIRECTION DETECTION PROCESSING SYSTEM FOR MATERIAL BODY
Document Type and Number:
Japanese Patent JPH04281578
Kind Code:
A
Abstract:

PURPOSE: To detect the direction of a material body in real time even for an input image with low resolution by detecting the direction of the material body by comparing the centroid of a feature area with that of a material body area.

CONSTITUTION: A feature area extraction part 13 extracts the feature area with high spatial change in luminance in a face image received from a face extraction part 12, and sends it to a centroid calculation part 104. The centroid calculation part 104 finds the centroid of the feature area, and outputs it to an inter-area distance calculation part 106. An area and centroid calculation part 105 finds the area and the centroid of a face area from the face image received from the face extraction part 12, and outputs it to the inter-area distance calculation part 106. The inter-area distance calculation part 106 finds inter-area distance in which the distance of centroids between the feature area and the face area is divided by the square root of the face area from the centroid of the feature area from the centroid calculation part 104 and the area and the centroid of the face area from the area and centroid calculation part 105, and a direction detecting part 107 receiving the output of the part 106 finds the direction of a face.


Inventors:
SHIMADA SATOSHI
Application Number:
JP1991000045033
Publication Date:
October 07, 1992
Filing Date:
March 11, 1991
Export Citation:
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Assignee:
NIPPON TELEGRAPH & TELEPHONE
International Classes:
G06T7/00; G06T7/20; G06T7/60; (IPC1-7): G06F15/62; G06F15/70