https://pfspipe.ipmu.jp/jira This file is an XML representation of an issue en-us 8.3.4 803005 13-09-2019 https://pfspipe.ipmu.jp/jira/browse/PIPE2D-408 DRP 2-D Pipeline <p>This ticket is from the series ``Improvements to the PSF 2d modeling, April 2019 brainstorming''.</p> <p>The centering of the model is done very crudely at the moment. The model at the moment creates many images separated by 15 microns (which is equal to 1 pixel) and determines which one is best. Then I search for the superpositions of two nearby images which gives best results (lowest chi**2). In conversations with Jim and Robert we have concluded that this is very similar to doing crude bilinear interpolation. These can and should be done better with some proper interpolation techniques (sinc, Lanczos and company). </p> PIPE2D-408

More than bilinear centering of the model for PSF 2d modeling

Task Normal Done Done ncaplar ncaplar Wed, 17 Apr 2019 13:50:06 +0000 Sat, 26 Jun 2021 13:21:13 +0000 Sat, 26 Jun 2021 13:21:13 +0000 0 1 <p>In February 2020 I improved the code so that it does ``true'' bilinear fitting, instead of crude implementation that I had before. <br/> Further improvements are still possible. </p> <p>Note that this is very probably the same problem/issue mentioned in <a href="https://pfspipe.ipmu.jp/jira/browse/PIPE2D-778" title="Difference between pipeline and 2d algorithm - interpolation/downsampling" class="issue-link" data-issue-key="PIPE2D-778"><del>PIPE2D-778</del></a></p> <p>Moved to Lancoz5 interpolation in <a href="https://pfspipe.ipmu.jp/jira/browse/PIPE2D-778" title="Difference between pipeline and 2d algorithm - interpolation/downsampling" class="issue-link" data-issue-key="PIPE2D-778"><del>PIPE2D-778</del></a>. </p> Relates PIPE2D-778 Development Rank 0|02qpt6:508yl4 Story Points 6.0