Analysis of methods for border ownership estimation

Olgunsoylu, Sertaç
Border Ownership (BO) signifies which side of an image border owns the border. This information is very important for many computer vision problems. There are various approaches for estimating BO in the literature. One approach is to use methods that rely on low-level local features; combinations of local visual cues such as convexity or junctions and using spectral features have been proven to be quite effective. Alternatively, global constraints or cues can be imposed on top of local cue predictions to make better BO estimates. There are also physiologically-inspired attempts, which, e.g., model contrast surround modulation in complex cells to estimate BO. In this thesis, we analysed representative BO estimation methods using a comprehensive BO database, which includes 500 indoor and 500 outdoor images. Performance of each method is analysed individually in terms of estimation accuracy. In addition to this analysis, we improve a naive local cue combination method using Conditional Random Fields to impose global consistency on junctions. Moreover, we proposed a new method that uses AdaBoost algorithm to combine visual cues.


Analysis of border ownership cues and improvement of depth prediction using border ownership
Akkuş, Mehmet Akif; Kalkan, Sinan; Department of Computer Engineering (2014)
Border Ownership is the problem of identifying which image regions own the image border. This information is essential and important for large variety of high-level vision problems such as object segmentation, object recognition, depth perception, motion perception etc. Current computational approaches to Border Ownership (BO) estimation either use artificial or limited number of real images. In this thesis, we propose a new comprehensive BO database, including 500 indoor and 500 outdoor images whose BO inf...
Estimating border ownership using iterative vector voting and conditional random fields
Özkan, Buğra; Kalkan, Sinan; Yarman Vural, Fatoş Tunay; Department of Computer Engineering (2014)
Border ownership is the information that signifies which side of a border owns the border. Estimating this information has recently become very popular for perceptual organization as it allows rectification of ambigious visual information. It is applied on many computer vision problems such as object detection, depth perception and optical flow. In this thesis, two different approaches are followed to solve the border ownership problem. For the supervised approach, conditional random fields are used as it i...
Extraction of border ownership information by conditional random field model Koşullu rastgele alan modeli ile sinir sahipligi bilgisi çikarimi
Özkan, Bugra; Kalkan, Sinan (2013-04-26)
Border ownership is a kind of information used for determining the regions that own borders in an image. This information has recently become more valuable as it began to be used in many vision problems such as figure-ground segregation, depth perception and optical flow, however the quality and quantity of current literature are not sufficient yet. In this study, a Conditional Random Field model is developed for the enhancement of border ownership labelings, which are extracted with the help of some spatia...
A comprehensive database for border ownership Sinir Sahiplǐgi Için Kapsamli Bir Veri Taban
Akkuş, Mehmet Akif; Topuz, Gaye; Özkan, Bǔgra; Kalkan, Sinan (2013-04-26)
Border ownership is a problem of identifying which visual region the borders of a visual image belong. It has valuable and essential information for visual systems. Existing computational approaches either use artificial or limited type and number of images. In this study, we propose a new comprehensive database, which contains border ownership information from the edges and segments of 500 indoor and 500 outdoor images determined by hand-labeling of human participants and a couple of analyses carried on th...
Design promlematique of paired border cities
Erkan, Rüya; Çalışkan, Olgu; Zırh, Besim Can; Urban Design in City and Regional Planning Department (2018)
International borders are concrete places that contain many dynamics within, expressed in abstract lines or abstract areas on the map. In the past, the concept of the border, which sustained its daily existence, has undergone both spatial and semantic changes. During these changes, the problems of the interface between the human relations, the border-crossings and the structure under the two different systems between the two sides of the boundary have always been fresh and agenda. Moreover, it has always be...
Citation Formats
S. Olgunsoylu, “Analysis of methods for border ownership estimation,” M.S. - Master of Science, Middle East Technical University, 2015.