Jody- Thanks. I see your other reply. I have been reading about JAI-EXT and will have some questions shortly.
-Jeff Jody Garnett wrote: > Thanks for the clarifications Jeff, and taking part in last nights meeting. I > am > going to reply to your other thread with respect to engaging the community. > > --Jody Garnett > On 4 November 2015 at 02:49, Jeff Brower <[email protected]> wrote: > > > - Use OpenCL to share work with CPU/GPU > > OpenCL support is of interest, but tends towards the CUDA direction, > requiring a high degree of device specific > knowledge.�� With the exception of Intel, most of the companies > supporting OpenCL are either non-CPU architecture (GPU) > or embedded system device manufacturers (FPGA, SoC, ARM, etc although > earlier this year ARM did join the OpenMP ARB). > > A key for high performance OpenCV is that it supports OpenMP.�� This > means that (i) code with OpenMP pragmas runs > unmodified on x86, c66x, PPC, or any other multicore CPU and (ii) and can > be enabled by setting #defines and compiler > flags (e.g. -fopenmp for gcc). > > OpenCV has ROI support but would need to be modified for no_data (null) > pixels and virtual bitmaps. > > -Jeff > > > GeoTools / GeoServer Meeting 2015-11-03 > > ======================================= > > > > Attending > > --------- > > > > Ben Caradoc-Davies > > Ian Turton > > Andrea Aime > > Jody Garnett > > Torben Barsballe > > Kevin Smith > > Jukka Rahkonen > > Jeff Brower > > Brad Hards > > > > Agenda > > ------ > > > > - CITE tests and build infrastructure > > - Java 8 > > - Code sprints > > - ImageProcessing (OpenCV, ImageJ, GeoAI) > > > > Actions > > ------- > > > > - Andrea whitelist winbuild instead of subscribing > > - Jody: check CITE test problem with boundless IT > > - Ben: call for volunteers to migrate master to Java 8 [DONE] > > - Jody: for Victoria code sprint, reach out to BC government, vivid > > solutions, etc... > > - Ben: make a wiki page for the Victoria code sprint [DONE] > > - Andrea : fill wiki page for code sprint > > > > Actions from last meeting > > ------------------------- > > > > - Victoria Office: move master to reference artifactory directly > > > > CITE tests and build infrastructure > > ----------------------------------- > > > > See email! Apparently we all missed it. > > > > Winbuild: failing, has not been notifying the list since August. > > > > What do we need? 2.8.x and master are not getting tested! > > > > - check ares to see if port ... trying to connect a service? > > - startup starts jetty, then polls port until it gets a response, gets > a > > 404 and dies > > > > http://ares.boundlessgeo.com/jenkins/view/testing-cite/job/2.8-cite-wfs-1.0/33/consoleFull > > > > > <head> > >�� �� <meta http-equiv="Content-Type" content="text/html; > charset=ISO-8859-1"/> > >�� �� <title>Error 404 NOT_FOUND</title> > > </head> > > > > - when did this start? October 21st ... > > - funny - the 2.7.x branch actively starts and works? > > - Check if each branch uses a different a port? > >�� �� 2.7.x polling port 11010 > >�� �� 2.8.x polling port 11010 > > - Check version of Java used? > > - action: check with boundless IT > > > > Java 8 > > ------ > > > > Waiting for CITE tests working - so this activity is blocked. > > > > Agreed to move JDK and source+target for master. > > > > Need a champion for this activity, recommend changing CITE, then online > > > tests, then master. And organize response. > > > > Action: call for volunteers. > > > > Travis status: > > - https://travis-ci.org/geotools/geotools (good) > > - https://travis-ci.org/geoserver/geoserver (dunno) > > > > Code Sprints > > ------------ > > > > There are two code sprints on the radar: > > * Feb code sprint in Victoria :) > > * France code sprint a week in Feb: > >�� �� http://doodle.com/poll/ii5cu9et58vghkts > > > > Approach: > > 1. make a wiki page (action: jody and ben) > >�� �� ��http://wiki.osgeo.org/wiki/Victoria_Code_Sprint_2016 > > 2. put the topic on the next board meeting (action: andrea) > >�� �� ��http://wiki.osgeo.org/wiki/Board_Meeting_2015-11-12 > > > > Ideas for wiki page: > > - Present as a maintenace activity, rather than a community build > activity. > > > > Sponsors ideas: > > - OSGeo > > - Credit GeoSolutions and Boundless for staff time > > - Local: BC Government? vivid solutions, etc... > > > > Concerns: > > - concerned about cost (see sponsorship) > > - time is close to code freeze? Could we do this mid January > > - may be a bit of scramble to get sponorship in order > > - action: Put January as primary date, mid Feb as fallback plan. > > > > OpenCV Discussion > > ----------------- > > > > Jeff Bower has a proposal sent out, Andrea has had a quick glance at > the > > proposal. > > > > Discussion: > > - possible replacement for native JAI replacment? Ie implement JAI > > Operators we care about in terms of OpenCV (Scale, Translate, General > > Affine, Warp, Crop, Lookup) and then give the a higher priority so they > > > are used if OpenCV plugin they are used. > > - discussion focused on WMS optimization above, Jeff's customers may be > > > using WPS for "image analyitics" - so they may be using WPS?! > > - standard operations may be worse because of latency in calling JAI > > operations via an accelerator. > > - concern about moving data on and off GPU? OpenCV can be configured to > > > stay on CPU > > - note: GIS procesing is not normal image processing - requires region > > of interest (similar to a mask), and 'no data' (some values should not > > be processed). > > - OpenCV has some support for the above :) > > > > ImageProcessing > > --------------- > > To review - Java Advanced Imaging is "end of life" and we are looking > at > > stratagies to replace. > > > > JAI > > - key feature is the tile based processing engine, you set up your > > processing chain (kind of like functional programming) and the engine > > will bring in raster data a chunk at a time allowing processing of > files > > larger than memory. > > - no_data and region of interest support has been added as additional > > operations via JAI-EXT for the processing engine. > > > > Alternatives: > > > > 1. OpenCV (see above) > > - http://opencv.org/ > > - BSD license, C/C++ codebase with bindings for Java > > - Use OpenCL to share work with CPU/GPU > > - Does it have the ability to work data larger then memory? Need to > > check ... > > > > 2. ImageJ > > - had a look, seems to be comparable to JAI (ie it is an image > > processing engine) > > - Eclipse Science Working Group is starting in on this one (and may > have > > room for collaboration) > > - Found the engine here: http://imagej.net/ImgLib2 > > - Could not see any support for working with raster data larger than > > memory. Has region of interest (ROI) support, not sure about no_data. > > - At least one nD dimensional data format. > > - has high level operators (feaure extractions etc...) > > > > 3. JAI Replacement > > - Need a project name for JAI replacement, then start fund raising > > - Interest from Boundless, GeoSolutions, LocationTech, H2Gis too > > - would like work though OSGeo and LocationTech > > - mostly focused on the technical requirements > > - name? JAI-NG, GTAI, GeoAI, JSCIP (Java Scalable Image Processing) > > JAI-15, OpenJImaging, OpenJI? OpenJAI? JIOpen? GeoNee > > - No use of JAI interfaces ... because Oracle > > - "Java" is a trademark > > - This is a *lot* of work, both in the project, and in migrating > > GeoTools and GeoServer. > > - Q: How well does GeoTools protect downstream projects? Pretty good > > (except for direct rendering path and some WPS). Remaining code is > > hidden behind "image worker". > > - Note: RenderedImage is a Java class, not PlanarImage which is the JAI > > > subclass. > > > > 4. GeoTrellis > > - requires data to be broken into tiles before use, making use of sparc > > > to handle concurrent processing. > > - Not sure about no_data and ROI support. > > > > > > -- > > Ben Caradoc-Davies <[email protected]> > > Director > > Transient Software Limited <http://transient.nz/> > > New Zealand > > > > > > ------------------------------------------------------------------------------ > > > _______________________________________________ > > Geoserver-devel mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/geoserver-devel > > > > > -- > > ---------------------------------------------------------------------------- > > _______________________________________________ > Geoserver-devel mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/geoserver-devel >
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