| Full text | |
| Author(s): |
Ponti, Moacir P.
;
Mascarenhas, Nelson D. A.
;
Suazo, Claudio A. T.
Total Authors: 3
|
| Document type: | Journal article |
| Source: | 2009 XXII BRAZILIAN SYMPOSIUM ON COMPUTER GRAPHICS AND IMAGE PROCESSING (SIBGRAPI 2009); v. N/A, p. 3-pg., 2007-01-01. |
| Abstract | |
Optical microscopic images, especially with a nonconfocal microscope, are fundamentally limited because the optical transfer function (the Fourier transform of the point-spread function) is zero over a region of the spatial-frequency domain. Iterative algorithms were developed for the restoration and extrapolation of diffraction-limited imagery. In this paper we present the effectiveness of an iterative method based on the Richardson-Lucy algorithm for image restoration and a simultaneous modified version of Gerchberg-Papoulis method to extrapolate the spectrum and control the noise amplification. Good convergence stabilization results were achieved and also good numerical results were observed. (AU) | |
| FAPESP's process: | 02/07153-2 - Algorithms for tomographic reconstruction: optimization, restoration, quantification and clinical application |
| Grantee: | Sergio Shiguemi Furuie |
| Support Opportunities: | Research Projects - Thematic Grants |