Documentation for MDS/Segment

Technique Segment DSs (VideoSegment DS, MovingRegion DS, and StillRegion DS)
Document MPEG-7 Committee Draft MDS, see Segment DSs (VideoSegment DS, MovingRegion DS,
and StillRegion DS)
Name Ana Belen Benitez, Columbia University
Contact ana@ee.columbia.edu
Type Application
External Libraries None
Related Ds/DSs Visual Descriptors and Description Schemes, SegmentRelation DSs, Segment attributes
Used Ds/DSs None
Input The input file contains a list of images with temporal and spatial information
for a set of segments. Segments can be video segments (VideoSegment), still regions
(StillRegion), or moving regions (MovingRegion) that can have associated any
number of frames, frames + masks, and frame + masks, respectively. Each image
contains that information as follows. The x-coordinate of the image represents
the frame number; the y-coordinate represents the segment id; and the gray scale
information provides the mask id for the segment in that frame.
The location of the original frames and masks are obtai ned as follows:
"[input image].dir/f_[frame number].ras"
"[input image].dir/f_[mask id][frame number].ras"
respectively.
Together with this image, each input has a text file describing the hierarchical
relationship between these segments, whose location is "[input image].dir/text.txt"
and whose format is the following:
[Segment id] [Segment type] [Number of children] [children Id's] [Decomposition type]
[gaps?] [overlaps?] [Number of annotations] [Annotation's]
where the decomposition and annotation information are optional.
An example of a well formed input file with three still regions follows:
1 StillRegion 2 2 3 spatial no yes 1 elephant
2 StillRegion 0
3 StillRegion 0
Extraction Yes
Client Appl Search & RetrievalSummary
This code generates descriptions of segment trees. This code also allows
to retrieve the segment descriptions based on the the minimum distance between
pairs of segments in the segment trees.
Strong Points -
Limitations None
Parameters None