260 000 images on a Raspberry Pi

In the previous post the op_lite object oriented database library for C++ was introduced.  I have been testing this library on Windows and Kubuntu using images from the Raspberry Pi1 Model B weather camera. The camera captures a JPEG image of size 1296×972 every minute, which means that each day there are 1440 additional images to put in the weather camera database. The database now has a viewer written in C++ based on op_lite and wxWidgets, It works fine on both Windows and Linux.

The PI weather camera has been  running steady for just about 6 months now, it has so far accumulated just over 260 000 images (database size is > 20GB) showing the daily weather plus stars at night. Today I wanted to try op_lite and the viewer on another Pi1 Model B, so I compiled the database viewer application there. This is straightforward as Raspbian is a debian derivative, just like Kubuntu.

The the 20GB database was copied from Windows across the LAN network to the PI which has a 320GB USB hard drive connected, formatted as linux ext4. The copy took a few minutes and the compilation of the software took longer, but it worked!  It shows that the database is compatible and can be freely copied around Windows/Kubuntu/Raspberry PI.

260 000 images captures on a PI1, viewed on another. It doesn’t work as fast as on a desktop, but it is certainly usable. I have a new PI2 Model B coming soon, and  it will be interesting to see how things performs there.  As the PI2 is said to be about ~6 times faster than the PI1, it should be good!


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