Which of the following transformation function requires much information to be specified at the time of input?(a) Log transformation(b) Power transformation(c) Piece-wise transformation(d) Linear transformationI got this question in a national level competition.The origin of the question is Basic Intensity Transformation Functions in section Intensity Transformations and Spatial Filtering of Digital Image Processing

Which of the following transformation function requires much informati

1.	Which of the following transformation function requires much information to be specified at the time of input?(a) Log transformation(b) Power transformation(c) Piece-wise transformation(d) Linear transformationI got this question in a national level competition.The origin of the question is Basic Intensity Transformation Functions in section Intensity Transformations and Spatial Filtering of Digital Image Processing
Answer» The correct answer is (C) Piece-wise transformation The explanation: The practical implementation of some IMPORTANT transformations can be formulated only as PIECEWISE functions. The principal disadvantage of piecewise functions is that their specification requires CONSIDERABLY more user input.

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