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<Intensity Transformation: Histogram Specification>

An image with intensities in the range [0, 1] has the PDF, pr(r), shown in Fig.1(a). It is desired to transform the intensity levels of this image so that they will have the specified pz(z) shown in Fig. 1(a). Assume continuous quantities and find the transformation (expressed in terms of r and z: z = T(r)) that will accomplish this.

pir) 2 P2(z 4/3 2/3 0 14 3/4 1 z Fig. 1(a). The PDF, p(r), of an image, and the specified PDF, pz(Z).

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