  This paper introduces an improved image processing method usable in
capacitive imaging applications. Standard capacitive imaging tends to prefer
amplitude-based images over the use of phase due to better signal-to-noise
ratios. The new approach exploits the best features of both types of
information by combining them to form clearer images, hence improving both
defect detection and characterization in non-destructive evaluation. The
methodology is demonstrated and optimized using a benchmark sample. Additional
experiments on glass fibre composite sample illustrate the advantages of the
technique.
