Slide 1

11-Oct-15 1

Character

Input Segmentation

Feature extraction

Neural networks based classifier

Preprocessing

Basic block diagram for Neural Network based

Hand Written Character Recognition

Output Class

Size Normalization

Hand Written Character Recognition

Slide 2

Hand Written Character Recognition

11-Oct-15 2

The Averaged Pixel Method for input size reduction

Slide 3

Hand Written Character Recognition

11-Oct-15 3

The Normalized Contour Analysis Method for input size reduction (Probing Method)

Slide 4

11-Oct-15 4

Image

Input Face Alignment

Feature extraction

Neural networks based classifier

Preprocessing

(Image filter, Enhancement)

Basic block diagram for Neural Network based

Face Recognition

Output Class

Size Normalization

Face Recognition

Slide 5

Data base collection and Feature extraction

Slide 6

Feature Extraction

11-Oct-15 6

Example of 68 points defining facial features.

Slide 7

The Topology of RBF

Feature Vectors x1 x2 xn

y1 ym

Inputs

Hidden Units

Output Units

Subclasses (Cluster)

Classes

As a pattern classifier.

wkm

Vnk

Slide 8

Classification Boundaries in MLP and RBF

• MLP NN classifier • RBF NN classifier

MLP NN RBF NN