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Face Detection using Color Segmentation and Eigenfaces

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Face Detection using Color Segmentation and Eigenfaces. Ashish Desai. Lukas Herzog ... Assumed Gaussian distribution of skin color in YbCbR color space ... – PowerPoint PPT presentation

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Title: Face Detection using Color Segmentation and Eigenfaces


1
Face Detection using Color Segmentation and
Eigenfaces
  • Ashish Desai
  • Lukas Herzog
  • Kais Mayaah

2
Overview
  • Block Diagram
  • Color Segmentation Implementation
  • Eigenface implementation
  • Example using a training image
  • Overall results
  • Possible improvements

3
Block Diagram
4
Color Segmentation
  • Assumed Gaussian distribution of skin color in
    YbCbR color space
  • Found mean and standard deviation using a subset
    of the training images
  • Eliminated any pixel that fell out of the range
    of the mean /- 1.6 standard deviations

5
Eigenface Implemenation
  • Used the Sirovich-Kirby method to find the
    highest power eigenface for a subset of the
    training images
  • Down-sampled the input to match the eigenface
    size based on a size estimation from the color
    section
  • Used template matching with eigenface,
    thresholding, and dilation

6
Training_5.jpg Original
7
Color Segmentation Example
8
Eigenface and Dilation Example
9
Final Output
10
Results with all Training Images
11
Conclusion and Possible Improvements
  • Color segmentation was excellent first step
  • Eigenface implementation may need more examples
    faces to get better results
  • Could possibly use more fuzzy scheme, rather
    than finite threshold values
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