opencv cascade.xml format - opencv

Question

I've just generated using opencv_traincascade.exe (opencv 2.4.11 (vc10)) cascade.xml file.
Then when I try to use it in javacv 0.8 (and 1.0 too), I get this error:
OpenCV Error: Unspecified error (The node does not represent a user object (unknown type?))
in cvRead, file ..\..\..\..\opencv\modules\core\src\persistence.cpp, line 4991
Exception in thread "main" java.lang.RuntimeException:
..\..\..\..\opencv\modules\core\src\persistence.cpp:4991: error: (-2) The node does not represent a user object (unknown type?) in function cvRead
Windows PATH variable looks to the folder, which consists my opencv_traincascade.exe. So I try to use cacade.xml by library, which made it.
I also have another cascade.xml, which works fine. I found the difference between to cascades:
Working:
<opencv_storage>
<haarcascade_frontalface_default type_id="opencv-haar-classifier">
<size>24 24</size>
<stages>
<trees>
... some tags for one stage
</trees>
</stages>
</haarcascade_frontalface_default>
</opencv_storage>
Don't working:
<opencv_storage>
<cascade>
<stageType>BOOST</stageType>
<featureType>HAAR</featureType>
<height>20</height>
<width>20</width>
<stageParams>
<boostType>GAB</boostType>
<minHitRate>9.9000000953674316e-001</minHitRate>
<maxFalseAlarm>4.0000000596046448e-001</maxFalseAlarm>
<weightTrimRate>9.4999999999999996e-001</weightTrimRate>
<maxDepth>1</maxDepth>
<maxWeakCount>100</maxWeakCount>
</stageParams>
<featureParams>
<maxCatCount>0</maxCatCount>
<featSize>1</featSize>
<mode>ALL</mode>
</featureParams>
<stageNum>16</stageNum>
<stages>
<!-- stage 0 -->
<_>
<maxWeakCount>1</maxWeakCount>
<stageThreshold>1.</stageThreshold>
<weakClassifiers>
<_>
<internalNodes>
0 -1 1 -2.3408320546150208e-001</internalNodes>
<leafValues>
1. -1.</leafValues></_></weakClassifiers></_>
<!-- stage 1 -->
.... //16 stages
<features>
.... // a lot of "rect" tags
</features>
</cascade>
</opencv_storage>
Everybody can notice, that the structures are different. I guess, this is the reason of the error.
What I'm doing wrong? How can I use my cascade.xml?

Answer 1

Yes, the problem was that I used javacv methods, which use old cascade xml format.
Using c++ - everything works.
Thank you, berak!