  Reliable spatial information can be difficult to obtain in planetary remote
sensing applications because of errors present in the metadata of images taken
with space probes. We have designed a pipeline to address this problem on
disk-resolved images of Jupiter's moon Europa taken with New Horizons' LOng
Range Reconnaissance Imager, Galileo's Solid State Imager and Voyager's Imaging
Science Subsystem. We correct for errors in the spacecraft position, pointing
and the target's attitude by comparing them to the same reference. We also
address ways to correct for distortion prior to any metadata consideration.
Finally, we propose a vectorized method to efficiently project images pixels
onto an elliptic target and compute the coordinates and geometry of observation
at each intercept point.
