Android saving enormous Mat object (Java)

asked 2015-10-12 09:29:51 -0600

DanielQ
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I'm writting andorid app where I use KNearest. I wrote code to train model, but every restart app, I must train data again, so I would like to save train data - Mat(1000, 40 000, CvType.CV_32FC1); I try to convert this Mat to byte[] and save it to SharedPreferences but I got outOfMemory exception...

Have you any suggestion to speed up or save data? Thx for help.

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answered 2015-10-13 02:59:47 -0600

dennisb
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CvKNearest extends CvStatModel hence it has save and load-methods. Why don't you simply use those methods? Do you have to update your trained model? That would be a problem...

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paper napkin maths: 1000 * 40000 * 16 = 640 mb if saved as xml...

berak ( 2015-10-14 00:57:42 -0600 )edit

I convert each image (to train) to binary, and save it to file, but it is 140 MB... Maybe I should use lower size each image (now, I have 200x200 px). PS. I wrote app to hand sign recognioton.