<div>Hi, all</div><div><br></div><div>I am working on astronomical image processing plug-in for Opticks.</div><div><br></div><div>In this week, <span class="Apple-style-span" style="font-family: Helvetica; font-size: 13px; line-height: 17px; "><span style="mso-spacerun:yes"> </span>I begin to implement the de-convolution
algorithm for image enhancement. </span></div><div><span class="Apple-style-span" style="font-family: Helvetica; font-size: 13px; line-height: 17px; "><br></span></div>
<span lang="EN-US" style="font-size:10.0pt;font-family:Helvetica;mso-fareast-font-family:
ËÎÌå;mso-bidi-font-family:Helvetica;color:black;mso-font-kerning:1.0pt;
mso-ansi-language:EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">De-convolution
attempts to restore an image that has been degraded to its original
pre-degraded condition. </span><span class="Apple-style-span" style="font-family: Helvetica; font-size: 13px; ">Successful de-convolution methods work using a constrained iterative process of image estimation and correction. Rather than attempt to solve the inverse convolution problem in a single step, image estimation relies on a series of small steps successive that eventually converge on a best estimate of the original image.</span><div>
<font class="Apple-style-span" face="Helvetica"><br></font></div><div><span class="Apple-style-span" style="font-family: Helvetica; font-size: 13px; ">Two types of de-convolution methods will be implemented. </span><font class="Apple-style-span" face="Helvetica"><span lang="EN-US" style="font-size: 10pt; font-family: Helvetica; color: black; ">The first one is Van Cittert method </span></font><span class="Apple-style-span" style="font-family: Helvetica; font-size: 13px; ">that uses additive correction</span><span class="Apple-style-span" style="font-family: Helvetica; font-size: 13px; ">. </span><span class="Apple-style-span" style="font-family: Helvetica; font-size: 13px; ">Another one is the Richardson-Lucy method. It is based on the maximum likelihood approach and </span><span class="Apple-style-span" style="font-family: Helvetica; font-size: 13px; ">uses a multiplicative correction factor.</span><font class="Apple-style-span" face="Helvetica"><span lang="EN-US" style="font-size:10.0pt;font-family:
Helvetica;mso-fareast-font-family:ËÎÌå;mso-bidi-font-family:Helvetica;color:black;
mso-font-kerning:1.0pt;mso-ansi-language:EN-US;mso-fareast-language:ZH-CN;
mso-bidi-language:AR-SA"> </span></font></div><div><div><br></div><div>The details of the report can be found at: <a href="http://opticks.org/confluence/display/~yiwei/Status+Report+for+Week+8%2C+GSoC+2011">http://opticks.org/confluence/display/~yiwei/Status+Report+for+Week+8%2C+GSoC+2011</a></div>
<div><br></div><div>Next week I will finish the implementation of the de-convolution method for image enhancement</div></div>