Image Type
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Interpretation
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Binary
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Logical array containing only 0's and 1's, interpreted as black and white, respectively. Also known as a bilevel image.
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Indexed
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Array of class logical , uint8 , uint16 , single , or double whose pixel values are direct indices into a colormap. The colormap is an m-by-3 array of class double . Also known as a pseudocolor image. Note: For single or double arrays, integer values range from [1, p]. For logical , uint8 , or uint16 arrays, values range from [0, p-1]
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Grayscale
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Array of class uint8 , uint16 , int16 , single , or double whose pixel values specify intensity values. Also known as a intensity image Note: For single or double arrays, values range from [0, 1]. For uint8 , values range from [0,255]. For uint16 , values range from [0, 65535]. For int16 , values range from [-32768, 32767].
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Truecolor
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m-by-n-by-3 array of class uint8 , uint16 , single , or double whose pixel values specify intensity values. Also known as an RGB image. Note: For single or double arrays, values range from [0, 1]. For uint8 , values range from [0, 255]. For uint16, values range from [0, 65535].
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