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Colour Image Processing - Assignment 2.html
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<html><head>
<meta http-equiv="content-type" content="text/html; charset=windows-1252">
<title>Colour Image Processing - Assignment 2</title>
</head>
<body>
<center>
<h2>ASSIGNMENT - II</h2>
<hr>
<b>Due Date: 12 April 2019</b>
<p>Test Images:<br><a href="https://scis.uohyd.ac.in/~chakcs/CIP2018/waterplane.ppm" target="_blank">waterplane</a><br>
<a href="https://scis.uohyd.ac.in/~chakcs/CIP2018/orange-flower.ppm" target="_blank">orange-flower</a><br>
<a href="https://scis.uohyd.ac.in/~chakcs/CIP2018/ed-eg.png" target="_blank">error-diffusion test</a><br>
<a href="https://scis.uohyd.ac.in/~chakcs/CIP2018/fall-colours.jpg" target="_blank">fall colours</a></p>
<hr>
</center>
<ol>
<li><b>(6 Marks)</b> Search the web for <em>Colour Halftoning
algorithms</em>. Select one of them and write a detailed
report on it <b>OR</b> implement the selected algorithm and
show results on the test images.</li>
<li><b>(6 Marks)</b> Try coming up with your own <em>error
diffusion coefficients</em> and implement the standard
error-diffusion algorithm. Compare the performance of your
coefficients against Floyd-Steinberg's on <a href="https://scis.uohyd.ac.in/~chakcs/CIP2018/ed-eg.png" target="_blank">this
image</a>. Discuss the patterns visible in yours and in
Floyd-Steinberg's at the various gray levels.</li>
<li><b>(4 + 4 Marks)</b>
<ul>
<li>Implement an algorithm to simulate the grayscale output
from a colour filter array. The function prototype is
<center><font color="#008032"><tt>image colour_filter
(image, filter)</tt></font></center>
That is, it takes an input colour image and a colour
filter as parameters and returns a grayscale image.</li>
<li>Implement a demosaicking algorithm with the prototype
<center><font color="#008032"><tt>image demosaic (image,
filter)</tt></font></center>
The input image is a grayscale image output by
the <font color="#008032"><tt>colour_filter</tt></font>
algorithm and the corresponding filter array; the output
is a colour image.</li>
</ul>
</li>
</ol>
<hr>
</body></html>