HISTOGRAM PLOTTING
2016-08-23
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Aim:
To write a program for histogram plotting of the image.
Theory:
The histogram of an image is the plot of the number of occurrence of gray levels in the
image against the gray-level values. The histogram provides a convenient way of expressing the
intensities in an image, but it is unable to convey any information regarding spatial relationship
between pixels. The histogram provides more insight into about image contrast and brightness.
The histogram of a dark image will be clustered towards the low gray level values while that of
bright image will be clustered towards higher gray level. Similarly the histogram of a low
contrast image will not be spread equally and for high contrast image histogram will have an
equal spread in the gray level values.
The histogram of a digital image with gray levels in the range of [0,L-1]is a discrete
function h(r k ) = n k ,where r k is the kth gray level and n k i
To write a program for histogram plotting of the image.
Theory:
The histogram of an image is the plot of the number of occurrence of gray levels in the
image against the gray-level values. The histogram provides a convenient way of expressing the
intensities in an image, but it is unable to convey any information regarding spatial relationship
between pixels. The histogram provides more insight into about image contrast and brightness.
The histogram of a dark image will be clustered towards the low gray level values while that of
bright image will be clustered towards higher gray level. Similarly the histogram of a low
contrast image will not be spread equally and for high contrast image histogram will have an
equal spread in the gray level values.
The histogram of a digital image with gray levels in the range of [0,L-1]is a discrete
function h(r k ) = n k ,where r k is the kth gray level and n k i
matlab
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