exeDERARegTrack
Centre for Vision, Speech & Signal Processing
 

Target Detection using Motion Estimation and Data Fusion

This executable was produced during the period January to June 1998 to process the data sequences provided by Graham Watson from DERA. It replaces earlier code written by Ali Hojjatoleslami which was not available in AMMA.

The task is to detect small and indistinct targets in image sequences and track them through consecutive frames. This is achieved using a multi-stage approach which combines image segmentation, motion estimation and data fusion. The algorithm is described as a note on the DERA Small Target Detection page which is in the Applications subtopic of the AMMA class documentation.

Example Usage:

Given an image sequence in grey level .pgm file format, the frames must have consecutive numbers but need not start with zero. File names must conform to the following standard 
$(NAME)$(NUMBER).pgm
where $(NAME) is the sequence name and $(NUMBER) is the current frame number which should not have leading zeros. All frames must be the same size.

Assuming that the frame numbers run from $(START) to $(FINISH) then the executable is run with the following compulsory command line options: 

DERARegTrack -Start $(START) -End $(FINISH) -i $(NAME)
Output will be generated to the standard output stream and result image files will be created with the following names: 
$(NAME)$(NUMBER)_F.ppm
The output formats are described here.

For example: Consider the sequence with images b2_20_40_0.pgm to b2_20_40_10.pgm. This sequence would be processed using the following command line: 

DERARegTrack -Start 0 -End 10 -i b2_20_40_

Online Help:

Usage: /vol/vssp/local/trees/amma-4/linux/bin/DERARegTrack [options] 
   -optload () [] Load options from a file.  
   -optsave () [] Save options to a file.  
   -Start (0) [0] First frame number 
   -End (0) [0] End frame number 
   -i () [] Path and filename for images
   -v (FALSE) [FALSE] Dump all images
   -s (500) [500] Maximum segmented region size 
   -minss (2) [2] Minimum static region size 
   -maxss (200) [200] Maximum static region size 
   -avcont (3) [3] Minimum average contrast 
   -grcont (3) [3] Minimum gradient contrast 
   -maxcomp (9) [9] Maximum compactness (perimeter/area) 
   -maxmt (2) [2] Maximum acceptable motion error 
   -hist (4) [4] Length of history to examine 
   -help (TRUE) [FALSE] Print usage information. 

Dependancies:
   -Start is compulsory.
   -End is compulsory.
   -i is compulsory.
Author: Robert Crida, Created: 17/6/1998, Generated by DocExe: March 20, 2001