Scenario: Have to generate qr code which contains some customer information. It will be scanned in android phone.
The information have to transfer in following process.
----------------------Server side---------|| Image ||------Android-----------------------------
original data-->Encrypt--->> Compress---> ||Qr code|| --> Decompress-->>Decrypt-->original data
Everything goes well. But Text compression is not efficient.
Is any efficient way to do this?
Without having tried it, I would say that Run-Length Encoding (RLE) (http://en.wikipedia.org/wiki/Run-length_encoding) would be a nice candidate.
The main idea is that you can replace a run of identical symbols with it's length.
So, if you have the 0 and 1 symbols for the pixels (dunno, if they are called like that on a QRcode), then one line of the qr code which would resemble something like this:
000000000000111111011111111111111110000000001 would be compressed to this:
12,6,1,16,9,1