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LITERATURE SURVEY OF AUTOMATIC FACE RECOGNITION ...

LITERATURE SURVEY OF AUTOMATIC FACE RECOGNITION ...

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Figure 12.1. Functioning principle of the eigenface­based face recognition<br />

algorithm<br />

13.1 Eigenface Calculation<br />

Step 1: Prepare the data<br />

CHAPTER XIII<br />

MATHAMETICAL CALCULATION<br />

In this step, the faces constituting the training set (Гi) should be prepared<br />

for processing.<br />

Step 2: Subtract the mean<br />

The average matrix, ψ , has to be calculated, then subtracted from the<br />

original faces (Гi) and the result stored in the variable фi:<br />

Step 3: Calculate the covariance matrix<br />

In the next step the covariance matrix C is calculated according to<br />

53

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