Is anyone aware of doing wavelet based compression of arrays of angular
data (or phase data)?

Instead of normal grau=yscale images, you have values from 0-360 degree
(which you can quantize between 0-255), but if you have two neighboring
pixzels with values of 255 an d0, dont treat it like a discontinuity..
hence this is tricky!

Also, would the SAR imagery community (or any other community) benefit
from such a compression technique that purely works on angles?