Title :
Cramer-Rao lower bound on locations of sudden changes in a steplike signal
Author :
Reza, Ali Moghaddamjoo ; Doroodchi, Mahmood
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Wisconsin Univ., Milwaukee, WI, USA
fDate :
10/1/1996 12:00:00 AM
Abstract :
Estimation of locations of sudden changes in a steplike signal has many signal processing applications; e.g., well-log signal segmentation, ionic-channel signal classification, edge detection, and segmentation of images. In this work, the Cramer-Rao lower bound (CRLB) on locations of steps in one-dimensional (1-D) steplike signals is calculated. The calculation is based on the use of a sigmoidal function to model a sudden-change (step) in the signal. The introduced model has an adjustable parameter that can be used to fit the CRLB calculation to a particular class of steplike signals
Keywords :
error analysis; estimation theory; signal processing; Cramer-Rao lower bound; adjustable parameter; edge detection; images segmentation; ionic-channel signal classification; one-dimensional steplike signals; sigmoidal function; signal processing applications; steplike signal sudden changes location; sudden-change; well-log signal segmentation; Change detection algorithms; Filters; Image edge detection; Image segmentation; Pattern classification; Performance evaluation; Probability density function; Signal detection; Signal processing; Signal processing algorithms;
Journal_Title :
Signal Processing, IEEE Transactions on
