using 3rd party jasper library fails in openCV 2.4.6 but works in 2.4.2

asked 2013-08-01 10:02:43 -0600

gaurav_kl
41 ●3

updated 2013-08-01 17:45:46 -0600

I was trying open a "jp2" image file and tried using the inbuilt jasperd.lib file in my library dependencies.I am getting the error "unable to decode code stream".

But when I was using 2.4.2 library it worked fine and I didn't even need to specify any library dependencies.But this one seems to be very slow as loading 1 image takes about a copuple of seconds.

What might be the issue with 2.4.6?I trued using 2.4.3-2.4.5 also but didn't work. EDIT: the image can be downloaded from this url - http://www.2shared.com/complete/8jNLafxp/a2_online.html

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could you attach the offending pic, so that others can test, too ?

berak ( 2013-08-01 10:14:16 -0600 )edit

hi.I edited my post.. I cant attach the image here as ".jp2" isn't allowed.Also couldn't upload it to "imgur". But I have obtained the images from here https://ia700507.us.archive.org/18/items/adventuresofsher001892doyl/ .So you can download the *_jp2.zip file to test any of the images.Thanks

gaurav_kl ( 2013-08-01 13:57:13 -0600 )edit

oh, 190 mb. i'm sorr<

berak ( 2013-08-01 14:29:54 -0600 )edit

uploaded it .http://www.2shared.com/complete/8jNLafxp/a2_online.html

gaurav_kl ( 2013-08-01 17:40:23 -0600 )edit

@berak did it work for you ?if it didn't,I can create an issue on the Opencv Tracker.

gaurav_kl ( 2013-08-02 11:22:59 -0600 )edit

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answered 2013-08-02 06:53:54 -0600

Alexander Smorkalov

5862 ●2 ●22 ●58 http://alex-alchemist....

It looks like some OpenCV bug. I recommend you to create issue on OpenCV tracker and attach images there.

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did it not work for you also?in that case,I can create an issue on the Opencv Tracker.

gaurav_kl ( 2013-08-02 11:21:57 -0600 )edit

No, I do not check it. Ticket is good solution to not forget about the problem and to add it to plan. Also, you can investigate the issue and propose your solution.

Alexander Smorkalov ( 2013-08-03 12:37:39 -0600 )edit

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answered 2014-07-15 00:09:25 -0600

darryln
11 ●3

Hi gaurav_kl,

I am not sure if you have solved the problem or raised a ticket for it. I believe I have just asked a related question here.

I looks to be caused by 2012's commit to libjasper's jas_stream.c line 389 which has caused encoding to JPEG2000 to fail in Windows.

A few lines before that, tmpname() and open() opens up a temporary file but calling unlink() in windows when the file is opened will fail. I have resorted to reverting commit on 29/8/2012 to OpenCV's source master and build my own opencv_highguiXXX.dll which then allows me to call imencode or imwrite to JPEG2000 without failure.

If a ticket hasn't been raised, I hope this can help the dev people fix the issue in the new branch of OpenCV.

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using 3rd party jasper library fails in openCV 2.4.6 but works in 2.4.2

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