Edgar Soldin wrote:
> Lähetetty: 25. syyskuuta 2011 23:34 > On 25.09.2011 13:00, Rahkonen Jukka wrote: > > I can open .jp2 images with Open-File menu. I was meaning > that the Image Layer Manager (test)... system that can be > accessed through Right click meny from the layer list. See > the image at > http://latuviitta.org/documents/OJ_Image_Layer_Manager.png > It should show I have added totally 8 .ecw images into one OJ > layer. The manager shows the list of the included images and > the map shows the outlines of the image tiles. And the Open > dialog that open after using the Add button shows that this > nice feature cannot be used with .jp2 images because they do > not appear on the list of all supported formats. > > please try > http://jump-pilot.sourceforge.net/download/nb.ed/OpenJUMP-2011 0925-r2433-bin.zip Hi, It works. It is slower with our JPEG2000 images than with ECW images but I would guess that it is due to ECW-JPEG2000 driver itself. Because folks perhaps do not have JPEG2000 images for testing I put my test protocol into the net so anybody can look at the screen captures. http://latuviitta.org/documents/OpenJUMP_with_JPEG2000.pdf The document speaks about JPEG2000 but everything works similarly with ECW. Probably with other supported image formats too but I have not tried. Image layer manager has been kind of a hidden treasure for me. There used to be a free utility "ECW JPEG 2000 Compressor 7.0" by ER Mapper which could be used for compressing image files up to a size of 500 MB when uncompressed. If somebody should have it available I am pretty sure it will generate the most speedy JPEG2000 files for OpenJUMP because both compress/uncompress would then use the same SDK. I made a test image with that compressor and here are some parameters taken from Kakadu kdu_show viewer: Cycc=yes Clayers=1 Cuse_sop=no Cuse_eph=yes Corder=LRCP Clevels=8 Ckernels=W5X3 Cuse_precincts=yes Cprecincts={128,128},{128,128},{128,128},{128,128},{128,128},{128,128},{128,128},{128,128},{64,64} Cblk={64,64} With those parameters it should be possible to make pretty similar JPEG200 images with other tools than ECW-JPEG2000. With one 10000x10000 pixel image I can not visually feel any difference. I am right now converting a 85 image test set with a licensed ER Mapper Image Compressor 7.2 for comparing ECW-JPEG2000 and Kakadu-JPEG2000 but it will take a few hours. I will report if I find some remarkable difference in speed or general usability. -Jukka Rahkonen- ------------------------------------------------------------------------------ All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity and more. Splunk takes this data and makes sense of it. Business sense. IT sense. Common sense. http://p.sf.net/sfu/splunk-d2dcopy1 _______________________________________________ Jump-pilot-devel mailing list Jump-pilot-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel
