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Development of Rotation Invariant Real-Time Multiple Face-Detection Engine  

Han, Dong-Il (Dept. of Computer Engineering, Sejong University)
Choi, Jong-Ho (Dept. of Computer Engineering, Sejong University)
Yoo, Seong-Joon (Dept. of Computer Engineering, Sejong University)
Oh, Se-Chang (Dept. of Information & Communication, Sejong Cyber University)
Cho, Jae-Il (Robot Research Department, ETRI)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SP / v.48, no.4, 2011 , pp. 116-128 More about this Journal
Abstract
In this paper, we propose the structure of a high-performance face-detection engine that responds well to facial rotating changes using rotation transformation which minimize the required memory usage compared to the previous face-detection engine. The validity of the proposed structure has been verified through the implementation of FPGA. For high performance face detection, the MCT (Modified Census Transform) method, which is robust against lighting change, was used. The Adaboost learning algorithm was used for creating optimized learning data. And the rotation transformation method was added to maintain effectiveness against face rotating changes. The proposed hardware structure was composed of Color Space Converter, Noise Filter, Memory Controller Interface, Image Rotator, Image Scaler, MCT(Modified Census Transform), Candidate Detector / Confidence Mapper, Position Resizer, Data Grouper, Overlay Processor / Color Overlay Processor. The face detection engine was tested using a Virtex5 LX330 FPGA board, a QVGA grade CMOS camera, and an LCD Display. It was verified that the engine demonstrated excellent performance in diverse real life environments and in a face detection standard database. As a result, a high performance real time face detection engine that can conduct real time processing at speeds of at least 60 frames per second, which is effective against lighting changes and face rotating changes and can detect 32 faces in diverse sizes simultaneously, was developed.
Keywords
Face-detection; MCT; Adaboost; Rotation Transformation; Hardware Implementation;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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