Search results for key=SqP1997b : 1 match found.

1997

• @techreport{SqP1997b,
  	vgclass =	{report},
  	vgproject =	{viper,cbir},
  	author =	{David McG. Squire and Thierry Pun},
  	title =	{Using human partitionings of an image set to learn a
  	similarity-based distance measure},
  	number =	{97.06},
  	institution =	{Computer Vision Group,  Computing Centre, University
  	of Geneva},
  	address =	{rue G\'{e}n\'{e}ral Dufour, 24, CH-1211 Gen\`{e}ve,
  	Switzerland},
  	month =	{November},
  	year =	{1997},
  	url =	{/publications/postscript/1997/VGTR97.06_SquirePun.pdf},
  	url1 =	{/publications/postscript/1997/VGTR97.06_SquirePun.ps.gz},
  	abstract =	{In this paper our goal is to employ human judgments of
  	image similarity to improve the organization of an image database for
  	content-based retrieval. We first derive a statistic, $\kappa_B$ for
  	measuring the agreement between two partitionings of an image set into
  	unlabeled subsets. This measure can be used both to measure the degree
  	of agreement between pairs of human subjects, and also between human
  	and machine partitionings of an image set. This provides a rigorous
  	means of selecting between competing image database organization
  	systems, and assessing how close the performance of such systems is to
  	that which might be expected from a database organization done by hand.
  
  	We then use the results of experiments in which human subjects are
  	asked to partition a set of images into unlabeled subsets to define a
  	similarity measure for pairs of images based on the frequency with
  	which they were judged to be similar. We show that, when this measure
  	is used to partition an image set using a clustering technique, the
  	resultant clustering agrees better with those produced by human
  	subjects than any of the feature space-based techniques investigated.
  	Finally, we investigate the use of machine learning techniques to
  	discover a mapping from a numerical feature space to this perceptual
  	similarity space. Such a mapping would allow the ground truth knowledge
  	abstracted from the human judgments to be generalized to unseen
  	images.},
  }