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In my opinion I think we can drop the second item. Regardless of how effective a classification map compressor is, I think it's desirable to be able to include a compressed classification map as part of the compressed image. And there's a good case to be made
that including it as a trailer is the least complicated approach for lots of users.</div>
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If someone wants to propose a way of periodically encoding a compressed classification map, we can evaluate the proposal. But I don't have such a proposal at this time.</div>
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Thanks,</div>
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Aaron</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> SLS-DC <sls-dc-bounces@mailman.ccsds.org> on behalf of Wong, Englin (GSFC-5670) via SLS-DC <sls-dc@mailman.ccsds.org><br>
<b>Sent:</b> Wednesday, June 11, 2025 7:55 AM<br>
<b>To:</b> sls-dc@mailman.ccsds.org <sls-dc@mailman.ccsds.org><br>
<b>Subject:</b> [EXTERNAL] [SLS-DC] CCSDS DCWG Near lossless compression meeting summary</font>
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<p class="x_MsoNormal">Hi All,</p>
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<p class="x_MsoNormal">Please see below for the draft summary for Low-Complexity Lossless and Near-Lossless Multispectral and Hyperspectral Image Compression Blue Book (CCSDS-123.0-B3):</p>
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<p class="x_MsoNormal">For this meeting cycle, CNES(Bruno) provided dataset with classification map and is uploaded to [9]. After UAB (Hern¨˘ndez-Cabronero) responded to the draft revision, NASA-JPL (Kiely) uploaded an updated draft red book [7] based on his
feedback. The group reviewed all the changes and feedback, the updated cleaned version can be seen in [8]. At this point, the working group aggress to start the cross-verification effort with the available There are few action items from the last meeting in
which to working group decides to analyze during the cross-verification effort. Because of the short turnaround time for Fall 2025 CCSDS meeting in September, the working group planned to update the fuzzy vectors test during the Fall 2025 to Spring 2026 meeting
cycle.</p>
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<p class="x_MsoNormal">The following are action items generated for the next meeting cycle:</p>
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<p class="x_MsoNormal"><b><span lang="FR" style="font-family:"Arial",sans-serif; color:black">Action Item No.</span></b><span lang="FR" style=""></span></p>
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<p class="x_MsoNormal"><b><span lang="FR" style="font-family:"Arial",sans-serif; color:black">Description</span></b><span lang="FR" style=""></span></p>
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<p class="x_MsoNormal"><b><span lang="FR" style="font-family:"Arial",sans-serif; color:black">Due Date</span></b><span lang="FR" style=""></span></p>
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<p class="x_MsoNormal"><span lang="FR" style="">DC-A-2025-3</span></p>
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<p class="x_MsoNormal"><span lang="FR" style="">The working group will start the cross-verification process on the current draft and analyze and report the following:</span></p>
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<li class="x_MsoListParagraphCxSpFirst" style="margin-left:0in"><span lang="FR">Verify methods for varying sample damping parameter as a function of y.</span></li><li class="x_MsoListParagraphCxSpMiddle" style="margin-left:0in"><span lang="FR">Assess benefit of compressing classification map (trailer or periodically encoded)
</span></li><li class="x_MsoListParagraphCxSpMiddle" style="margin-left:0in"><span lang="FR">Performance of
<i>¦Ë<sub>z</sub></i>(<i>t</i>) = 1 performance verification.</span></li></ol>
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<p class="x_MsoNormal"><span lang="FR" style="">JPL, CNES/UAB, GSFC</span></p>
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<p class="x_MsoNormal"><span lang="FR" style="">Fall 2025 Meeting</span></p>
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<p class="x_MsoNormal">Please let me know if there is anything that is not clear or needs to be updated.</p>
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<p class="x_MsoNormal">Best,</p>
<p class="x_MsoNormal">Mark</p>
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<p class="x_MsoNormal"><span style="font-size:8.0pt; font-family:"Arial",sans-serif; color:#1F497D">---------------------------------------------------------------------------------------</span></p>
<p class="x_MsoNormal"><b><i><span style="font-size:10.0pt; font-family:"Calibri Light",sans-serif; color:#1F497D">Mark Wong</span></i></b><i><span style="font-size:10.0pt; font-family:"Calibri Light",sans-serif; color:#1F497D">,<b>
</b></span></i><span style="font-size:10.0pt; font-family:"Calibri Light",sans-serif; color:#1F497D">Ph.D.
</span></p>
<p class="x_MsoNormal"><span style="font-size:8.0pt; font-family:"Calibri Light",sans-serif; color:#1F497D">NASA/Goddard Space Flight Center
</span></p>
<p class="x_MsoNormal"><span style="font-size:8.0pt; font-family:"Calibri Light",sans-serif; color:#1F497D">Flight Microwave & Telecommunication Systems Branch/Code 567</span></p>
<p class="x_MsoNormal"><span style="font-size:8.0pt; font-family:"Calibri Light",sans-serif; color:#1F497D">Greenbelt, MD 20771</span></p>
<p class="x_MsoNormal"><span style="font-size:8.0pt; font-family:"Calibri Light",sans-serif; color:#1F497D">B19 Rm S030</span></p>
<p class="x_MsoNormal"><span style="font-size:8.0pt; font-family:"Calibri Light",sans-serif; color:#1F497D">Phone: 1-301-286-6549
</span></p>
<p class="x_MsoNormal"><span style="font-size:8.0pt; font-family:"Arial",sans-serif; color:#1F497D">----------------------------------------------------------------------------------------</span></p>
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