Title :
Reduction of Poisson noise for time-resolved diffuse optical measurement
Author :
Okawa, Shinpei ; Yamada, Yukio
Author_Institution :
Dept. of Mech. Eng. & Intell. Syst., Univ. of Electro-Commun., Tokyo, Japan
Abstract :
A reduction of the Poisson noise with MAP estimation for diffuse optical tomography is introduced. Time-resolved data are modeled as a Markov process. Noise-free time-resolved data which maximize a posterior probability are estimated. By numerical simulation, it is found that the proposed noise reduction reduces the artifacts in the reconstructed DOT images.
Keywords :
Markov processes; image reconstruction; maximum likelihood estimation; medical image processing; numerical analysis; optical tomography; stochastic processes; MAP estimation; Markov process; Poisson noise reduction; a posterior probability; diffuse optical tomography; numerical simulation; reconstructed DOT images; time resolved diffuse optical measurement; Absorption; Image reconstruction; Noise; Noise measurement; Optical imaging; Photonics; US Department of Transportation; Diffuse optical tomography; Maximum a posteriori probability estimation; Poisson noise; Time-resolved measurement;
Conference_Titel :
SICE Annual Conference 2010, Proceedings of
Conference_Location :
Taipei
Print_ISBN :
978-1-4244-7642-8
