טכניון מכון טכנולוגי לישראל
הטכניון מכון טכנולוגי לישראל - בית הספר ללימודי מוסמכים  
M.Sc Thesis
M.Sc StudentPeles David
SubjectSegmentation by Classification
DepartmentDepartment of Computer Science
Supervisor Professor Michael Lindenbaum
Full Thesis textFull thesis text - English Version


Abstract

Most segmentation methods are based on a relatively simple score, designed to lend itself to relatively efficient optimization. We take the opposite approach and suggest more complex segmentation scores that are based on on-line and off-line learning processes. We train an off-line learning process to distinguish between properties of good and bad image segments. An on-line learning process, which adapts to the discriminative local features (i.e superpixels descriptors such as color, brightness, texture) is used to generate features. We embedded this score in a segmentation process which uses exploration-exploitation considerations to search a segment that maximizes the proposed score. We test our algorithm in a foreground-background segmentation task, given a minimal prior which is just a single seed point inside the object of interest. Results on GrabCut and Weizmann's image databases are presented.

Finally, a quantitative comparison of our results with the ones achieved by GrabCut and Segmentation By Composition are presented and discussed.