Polar coordinate transformation is a mathematical technique used to convert coordinates from the Cartesian system (x, y) to the polar system (r, θ), where 'r' represents the distance from the origin and 'θ' represents the angle from the positive x-axis. This transformation is crucial in optical pattern recognition and classification as it simplifies the representation of data that has inherent angular symmetry, making it easier to analyze patterns and classify shapes based on their geometrical properties.
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