Announcements

Recognition

Recognition

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Applications:  Computational photography

Applications:  Assisted driving

Applications:  image search

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Let’s start simple

Face detection

One simple method:  skin detection

Skin detection

Skin classification techniques

Probability

Probabilistic skin classification

Learning conditional PDF’s

Learning conditional PDF’s

Bayes rule

Bayesian estimation

Skin detection results

General classification

Linear subspaces

Dimensionality reduction

Linear subspaces

Principal component analysis

The space of faces

Dimensionality reduction

Eigenfaces

Projecting onto the eigenfaces

Recognition with eigenfaces

Choosing the dimension K

Issues:  metrics

Metrics

Issues:  feature selection

Issues:  data modeling

Generative vs. Discriminative

Issues:  dimensionality

Issues:  speed

Feature extraction

Large library of filters

AdaBoost for feature+classifier selection

AdaBoost: Intuition

AdaBoost: Intuition

AdaBoost: Intuition

AdaBoost Algorithm

Cascading classifiers for detection

Viola-Jones Face Detector: Summary

Viola-Jones Face Detector: Results

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Detecting profile faces?

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