Image reconstruction

Details Image reconstruction Image reconstruction

1996-10-09

1999-08-10

Shalwala, Bipin

Image analysis

Image transformation or preprocessing

382131, 382279, 382293, G06K 900, G06K 932, G06K 936, G06K 964

Patent

active

059371021

ABSTRACT:
Am image is reconstructed from x-ray attenuation data or other types of data using fast Fourier circular convolution (FFCC). Reference spectra and mask functions are generated for the FFCC. Also, the data is zero-padded for the FFCC. The data is transformed, multiplied by a radial filter, and transposed in order to construct the image by FFCC. The reconstructed image is converted from polar to Cartesian coordinates for viewing.

REFERENCES:
patent: 4023036 (1977-05-01), Barrett et al.
patent: 5065436 (1991-11-01), Matsumura
patent: 5119027 (1992-06-01), Ehrhardt
patent: 5170439 (1992-12-01), Zeng et al.
patent: 5307264 (1994-04-01), Waggener et al.
patent: 5375156 (1994-12-01), Kuo-Petravic et al.
Henry J. Scudder, "Introduction to Computer Aided Tomography", Jun. 1978, Proceedings of the IEEE, vol. 66, pp. 628-637.
Henry Stark, et al., Direct Fourier Reconstruction in Computer Tomography, Apr. 1981, IEEE Transactions on Acoustics, Speech and Signal Processing, vol. ASSP-29, No. 2, pp. 237-244.
David C. Munson, et al., "A Tomographic Formulation of Spotlight-Mode Synthetic Aperture Radar", Aug. 1983, Proceedings of the IEEE, vol. 71, No. 8, pp. 917-925.
Dean L. Mensa, et al., "Coherent Doppler Tomography for Microwave Imaging", Feb. 1983, Proceedings of the IEEE, vol. 71, No. 2, pp. 254-261.
Stephen J. Norton, "Reconstruction of a two-dimensional reflecting medium over a circular domain: Exact solution", Apr. 1980, J. Acoust. Soc. Am., vol. 67, No. 4, pp. 1266-1273.
Mita D. Desai et al., "Convolution Backprojection Image Reconstruction for Spotlight Mode Synthetic Aperture Radar", Oct. 1992, IEEE Transactions on Image Processing, vol. 1, No. 4, pp. 505-517.
Skolnik, Radar Handbook, pp. 3-5.

Affiliated with

Also associated with

Rating

Image reconstruction does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Image reconstruction, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image reconstruction will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1127917