How to train?

[Nurgle87]

Hi @gheinrich,

first of all, many thanks for this project :)!

Can you send me the commands you used in order to generate the file "svm-prom1.xml" and specify the set of pictures you used to do it? Can you help me @gheinrich ?

I tried several times to create it with the pictures you provide in the project, but I get this error: OpenCV Error: Assertion failed (0 <= roi.x && 0 <= roi.width && roi.x + roi.width <= m.cols && 0 <= roi.y && 0 <= roi.height && roi.y + roi.height <= m.rows) in Mat, file /home/nurgle/Scrivania/opencv-2.4.9/modules/core/src/matrix.cpp, line 323
terminate called after throwing an instance of 'cv::Exception'
what(): /home/nurgle/Scrivania/opencv-2.4.9/modules/core/src/matrix.cpp:323: error: (-215) 0 <= roi.x && 0 <= roi.width && roi.x + roi.width <= m.cols && 0 <= roi.y && 0 <= roi.height && roi.y + roi.height <= m.rows in function Mat.

I use this command: "../../bibnumber/Debug/bibnumber -train . ." in a folder with the "prom*.jpg" pictures, since I believed you used the "prom*.jpg" pictures to create the aforementioned "*.xml".

Many thanks in advance for your attention.

Best regards,
@Nurgle87

[xc-racer99]

@Nurgle87
In case you're still interested and for anyone else who might stumble upon this, I believe the error you're getting is because there's currently a test image hard-coded into https://github.com/gheinrich/bibnumber/blob/master/bibnumber/train.cpp#L428 This solved the same issue for me.

[Nurgle87]

@xc-racer99
Unfortunately at the moment I am on a different project, but I am really interested in this kind of topics, so I will be back on it :)! Many thanks for your support!

[Yogiraj24]

thanks @gheinrich for the project . Stuck at the same stage , as @Nurgle87 . The command to train is not working , throwing below exception.

OpenCV Error: Assertion failed (0 <= roi.x && 0 <= roi.width && roi.x + roi.width <= m.cols && 0 <= roi.y && 0 <= roi.height && roi.y + roi.height <= m.rows) in Mat, file /build/opencv-ys8xiq/opencv-2.4.9.1+dfsg/modules/core/src/matrix.cpp, line 323
terminate called after throwing an instance of 'cv::Exception'
what(): /build/opencv-ys8xiq/opencv-2.4.9.1+dfsg/modules/core/src/matrix.cpp:323: error: (-215) 0 <= roi.x && 0 <= roi.width && roi.x + roi.width <= m.cols && 0 <= roi.y && 0 <= roi.height && roi.y + roi.height <= m.rows in function Mat

Appreciate any help on this .

Thanks .