Acoustic imaging may be useful in such applications as nondestructive testing, biomedical diagnosis, underwater viewing and micros copy. Unfortunately, however, the quality of images available from acoustic systems is not always satisfactory to human observers. A digital image-processing technique, employing minicomputers and relatively inexpensive input-output equipment, has been used for image enhancement and noise removal in images produced by a Bragg-diffraction system. This paper describes the technique and shows the results of applying the method in the case of a particularly simple image of a hook.
KeywordsAcoustic Image Picture Element Computer Input Spot Scanner Digital Image Processing System
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- 1.W. K. Pratt and R. P. Kruger, ”Image Processing over the ARPA Computer Network, “ ARPA Report under Contract No. F08606–72-C-0008.Google Scholar
- 2.Robert E. Kahn, ”Resource-sharing Computer Communications Network, “ Proc. IEEE, Vol. 60, No. 11, Nov. 1972.Google Scholar
- 3.G. Wade, J. Landry and J. P. Powers, ”Ultrasonic Imaging of Internal Structure by Bragg Diffraction, “ Appl. Phys. Letters, Sept. 15, 1969.Google Scholar
- 5.B. R. Hunt, ”Computational Considerations in Digital Image Enhancement, “ Proc. Two Dimensional Digital Signal Processing Conference, Oct. 1971, Columbia, Mo.Google Scholar
- 6.J. O. Eklundh, ”A Fast Computer Method for Matrix Transposing, “ IEEE Trans. on Computers, Vol. C-21, No. 7, July 1972.Google Scholar