What is the best way to store a Mat object in Android? (there is a similar, unanswered, question [here](http://stackoverflow.com/questions/15271411/saving-orb-feature-vectors-using-opencv4android-java-api))
In image processing apps; it requires quite a lot of processing time to perform necessary pipelines which could be redundant. Thus, Mats would be preferably stored to prevent re-computation every time. I considered using SQLlite databases, but those seem to add unnecessary complexity in reading and writing Mat objects, where the method I understand would be writing each individual pixel in a Mat object in a separate row.
I came across solutions (regarding saving custom classes, not OpenCV in specific) that suggested saving the file [externally to the SD card](http://stackoverflow.com/a/4394107/1446598). That seems quite plausible, but the problem is that class Mat must implement `Serializable` class (according to many online references, as [here](http://stackoverflow.com/a/14304960/1446598)), which is not the case. I don't wish to alter OpenCV's library albeit being open source, because I don't have much experience around the library.
**Are there any time, and memory, efficient ways to preserving Mat objects for later launches of the app?**
Thank you for your time.
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