Construction, restoration, and enhancement of 2 and 3-dimensional images
Journal Article
·
· IEEE Trans. Nucl. Sci.; (United States)
The construction of an image function from the physically measured projections of some object is discussed with reference to the least squares optimum filters, originally derived to enhance the signal-to-noise ratio in communications theory. The computerized processing associated with tomography is generalized so as to include 3 distinct parts: the construction of an image from the projection information, the restoration of a blurred, noisy image, degraded by a known space-invariant impulse response, and the further enhancement of the image, e.g., by edge sharpening. In conjuction with given versions of the popular convolution algorithm, not to be confused with filtering by a 2-dimensional convolution we consider the conditions under which a concurrent construction, restoration, and enhancement are possible. Execution speeds are compared.
- Research Organization:
- Univ. of California, Los Angeles
- OSTI ID:
- 7098119
- Journal Information:
- IEEE Trans. Nucl. Sci.; (United States), Journal Name: IEEE Trans. Nucl. Sci.; (United States) Vol. NS-24:2; ISSN IETNA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Three-dimensional restoration of single photon emission computed tomography images
Restoration of combined conjugate images in SPECT; Comparison of a new Weiner filter and the image-dependent Metz filter
Space-invariant deblurring given N independently blurred images of a common object
Journal Article
·
Sat Oct 01 00:00:00 EDT 1994
· IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States)
·
OSTI ID:6861795
Restoration of combined conjugate images in SPECT; Comparison of a new Weiner filter and the image-dependent Metz filter
Conference
·
Sat Mar 31 23:00:00 EST 1990
· IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (USA)
·
OSTI ID:6581430
Space-invariant deblurring given N independently blurred images of a common object
Journal Article
·
Sat Mar 31 23:00:00 EST 1984
· J. Opt. Soc. Am.; (United States)
·
OSTI ID:6745830
Related Subjects
440300 -- Miscellaneous Instruments-- (-1989)
47 OTHER INSTRUMENTATION
550601* -- Medicine-- Unsealed Radionuclides in Diagnostics
62 RADIOLOGY AND NUCLEAR MEDICINE
DATA PROCESSING
FILTERS
FOURIER TRANSFORMATION
IMAGE PROCESSING
INTEGRAL TRANSFORMATIONS
LEAST SQUARE FIT
MAXIMUM-LIKELIHOOD FIT
NUMERICAL SOLUTION
PROCESSING
TOMOGRAPHY
TRANSFORMATIONS
47 OTHER INSTRUMENTATION
550601* -- Medicine-- Unsealed Radionuclides in Diagnostics
62 RADIOLOGY AND NUCLEAR MEDICINE
DATA PROCESSING
FILTERS
FOURIER TRANSFORMATION
IMAGE PROCESSING
INTEGRAL TRANSFORMATIONS
LEAST SQUARE FIT
MAXIMUM-LIKELIHOOD FIT
NUMERICAL SOLUTION
PROCESSING
TOMOGRAPHY
TRANSFORMATIONS