A variation of matched filtering using 1-D code sequences with near optimum correlation properties is applied to the reconstruction of coded-source or coded-scan tomographic imagery. The reconstructed image enjoys a higher SNR than imagery reconstructed with conventional matched filtering. A major advantage of using code sequences is the elimination of noise and secondary images that result from the sidelobes of the autocorrelation function of nonnegative functions or sequences.
© 1978 Optical Society of America
H. Stark and R. Naab, "Application of optimum coding sequences to computerized classical tomography," Appl. Opt. 17, 3133-3137 (1978)