<br><div class="gmail_quote">Dear all,<div><br></div><div>Parameter tuning in the image registration is really a tough job for me, due to lack of analysis skills. Everytime when I have a new application, I have to spend a huge amount of time to find the right parameter set. Or maybe I was "guessing" the parameters. I understand there are so many different algorithms in image registration, and in each algorithm, again so many different choice for each component, e.g. optimizer, sampler, and metrics. In each component, there are several parameters to tune. </div>
<div><br></div><div>Is there any reference that help parameters tuning in image processing? Any introduction on how to analyse the result by changing parameters, not only from high level, e.g. improve the metric value. It is more like, if I want to tune the parameters in an optimizer, I might want to analyse the gradients, or might draw some graph on the step size, or convergence. </div>
<div><br></div><div>I understand the parameter tuning in this way, as a starter of image processing. All comments are highly appreciated. There is no uniform good and robust parameter set for a registration algorithm. If you want to choose the right parameters, you have to understand each component in a registration algorithm how they work, and can be able to mathematically analysis on results in each components. However, this seems a bit unrealistic.</div>
<div><br></div><div> Another quick way is start from the code and parameters available, and gradually understand the algorithm, which is what I am doing. However, at this stage, I still cannot do a systematically analyse on each component in a Bspline based registration result by using different parameters. I just try different combination to get the highest value of SSD, or MI, or those metric value, or just though visual check. I would like to analyse the behavior of each component in a lower level, but only look at the final registration result. </div>
<div><br></div><div>Or maybe I should not ask how to do parameter tuning, I should ask how to do image analysis. However, most of the book just discuss on the algorithm, and do not discuss how to analyse or "debug" the wrong component. </div>
<div><br></div><div>This question might be a little bit confusing, and I just try to analyse and figure out what is the true problem while typing. <br></div><div><br></div><div>Kind regards,</div><div><br>
</div><div>Xi</div>
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