Separation of biometric relevant information from unnecessary data of recording. Strongly related to Feature extraction.

The manipulation of data, via a large number of techniques, to make it suitable for further manipulations or analysis.

preliminary transformation of raw data required to facilitate further cartographic processing.

Altering data to some extent to be more accurately analyzed; smoothing, reducing unwanted data, removing trend. Processing data is mathematically transforming the data from one form into another with the goal of amplifying the pertinent information.

Enhancement, transformation, or filtering of images before processing.

In a remote sensing system, the processing of data received from the sensor to a form acceptable by the data bank and subsequent processing functions. This may also include geometric and radiometric calibration, enhancements, and other transformations.

Preprocessing is the act of processing data before it is parsed. There are numerous situations where it makes sense to do the parsing in several stages. One is where humans are the parsers, and another is in the context of computer programming.