Signal processing

Biometrics

Signal processing is the process of extracting distinguishing features from a raw biometric sample, which may include some or all of the following:

• signal or image normalization
• segmentation
• feature extraction
• quality assessment, and
• template creation.

Telecommunications

Signal processing is

“

[t]he processing of externally derived information-bearing signals by algorithms such as time compression, filtering, extraction, selection, correlation, convolution or transformations between domains (e.g., fast Fourier transform or Walsh transform).

”