What is normalization and standardization of images?
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In image processing, normalization is a process that changes the range of pixel intensity values. Applications include photographs with poor contrast due to glare, for example. Normalization is sometimes called contrast stretching or histogram stretching.
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The three main types of pixel scaling techniques supported by the ImageDataGenerator class are as follows:
Pixel Normalization: scale pixel values to the range 0-1. Pixel Centering: scale pixel values to have a zero mean.
Pixel Standardization: scale pixel values to have a zero mean and unit variance
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