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Basic concepts for the MIL Pattern Matching module


The basic concepts and vocabulary conventions for the MIL Pattern Matching module are:

Normalized grayscale correlation (NGC). A technique that finds a pattern by looking for a similar spatial distribution of intensity.

Model image. The model, when drawn, is a model image.

Model occurrence. The model, when found in a target image.

Model's source image. The image from which the model is defined/extracted.

Reference position. A point that is relative to the model origin, that indicates which position to return when an occurrence of the model is found in the image. The position of an occurrence is the model's reference position transformed at the model occurrence (that is, relative to the target image's origin). The reference position does not have to be in the model, but it is, by default, located at the model's center.

Search region. The area in which to find the model's reference position of a model occurrence within the target image.

Target image. The image being searched.