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Image Processing

Okay, Now let's start doing Image Processing exercises on MATLAB.

Before diving in let's start knowing what are the terms "Histograms", "Cumulative Histograms" and "Histogram Equalization" of an image.

Let's see what are those,

Histogram
An image histogram is a type of histogram that acts as a graphical representation of the tonal distribution in a digital image. It plots the number of pixels for each tonal value. By looking at the histogram for a specific image a viewer will be able to judge the entire tonal distribution at a glance.

Cumulative Histogram
A cumulative histogram is a mapping that counts the cumulative number of observations in all of the bins up to the specified bin. That is, the cumulative histogram Mi of a histogram mj is defined as:

M_i = \sum_{j=1}^i{m_j}.

 Histogram Equalization

Histogram equalization is a method in image processing of contrast adjustment using the image's histogram.

for more definitions visit wikipedia.org

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