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A study on face system

A study on face system. Speaker: Mine-Quan Jing National Chiao Tung University. Outline. Application Related techniques Segmentation Identification Recognition Progress ( 目前進展 ) Systems Demo NTU,NCTU,NTHU,ACADMIA SINICA. Related techniques – Segmentation.

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A study on face system

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  1. A study on face system Speaker: Mine-Quan Jing National Chiao Tung University

  2. Outline • Application • Related techniques • Segmentation • Identification • Recognition • Progress (目前進展) • Systems Demo • NTU,NCTU,NTHU,ACADMIA SINICA

  3. Related techniques – Segmentation • How to find the face in a scene • Color Based • Change Detector (CD) • Background Subtraction • Temporal Difference • Hybrid

  4. Related techniques –Color Based Segmentation • Skin Color & shape (elliptical) are often used in detect and track faces • The disadvantage: • Do not work with all kind of skin color • Not robust under varying lighting condiction

  5. Color Based Segmentation— Skin model construction The original image was taken from http://nn.csie.nctu.edu.tw/face-detection/ppframe.htm

  6. Color Based Segmentation— Skin model construction The original image was taken from http://nn.csie.nctu.edu.tw/face-detection/ppframe.htm

  7. Color Based Segmentation— Skin model construction • Gaussian mixture colour models for face detection. http://www.dcs.qmul.ac.uk/research/vision/articles/bmvc97/node1.html

  8. Related techniques –Change Detector • a face is almost always moving • Disadvantages: • What if there are other object moving in the background. • Four steps for detection • Frame differencing • Thresholding: • Noise removal • Locate the face http://ansatte.hig.no/~erikh/papers/hig98_6/node2.html#bevdet

  9. A typical motion image Related techniques –Change Detector Amount of pixels on each line in the motion image The original images were taken from http://ansatte.hig.no/~erikh/papers/hig98_6/node2.html#bevdet

  10. The 5th International Conference on Automatic Face and Gesture Recognition will take place 2002 in Washington D.C., USA.

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