Title :
Image reconstruction from a limited number of projections using multiple object detection/estimation
Author :
Sauer, Lien ; Liu, Bede
Author_Institution :
Dept. of Electr. & Comput. Eng., Notre Dame Univ., IN, USA
Abstract :
An algorithm which approximates the maximum likelihood estimator (MLE) for the locations of constant-density discs in integral projection data is presented. The algorithm is of linear complexity in the object count and requires only approximately 25% more computation than the MLE of the single-location problem. Approximation error analysis, in terms of error probability, is provided through empirical matching of densities for the extremal values of the random-noise field
Keywords :
picture processing; signal detection; signal synthesis; MLE; approximate error analysis; constant-density discs; empirical matching; error probability; image reconstruction; integral projection data; linear complexity; maximum likelihood estimator; multiple object detection; multiple object estimation; random-noise field; Approximation error; Data mining; Error analysis; Error probability; Filters; Frequency estimation; Image reconstruction; Maximum likelihood detection; Maximum likelihood estimation; Object detection; Shape; Tomography;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1990. ICASSP-90., 1990 International Conference on
Conference_Location :
Albuquerque, NM
DOI :
10.1109/ICASSP.1990.115857
