# lab6T - Signal Processing First Lab 06 Digital Images A/D...

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where T 1 and T 2 are the sample spacings in the horizontal and vertical directions. In MATLAB,we can represent an image as a matrix, that consists of M rows and N columns. The matrix entry at ( m, n ) is the sample value x [ m, n ]—called a pixel (short for picture element). An important property of light images such as photographs and TV pictures is that their values are always non-negative and finite in magnitude; i.e., 0 < x[m, n] < Xmax < ! This is because light images are formed by measuring the intensity of reflected or emitted light which must always be a positive finite quantity. When stored in a computer or displayed on a monitor, the values of x[m, n] have to be scaled relative to a maximum value X max . Usually an eight-bit integer representation is used. With 8-bit integers, the maximum value (in the computer)
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lab6T - Signal Processing First Lab 06 Digital Images A/D...

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