Journal ArticleDOI
Depth order estimation for video frames using motion occlusions
Guillem Palou,Philippe Salembier +1 more
Reads0
Chats0
TLDR
A system to estimate the depth order of regions belonging to a monocular image sequence using a hierarchical region-based representation of the image by means of a binary tree and a depth order graph is constructed to achieve a global and consistent depth ordering.Abstract:
This study proposes a system to estimate the depth order of regions belonging to a monocular image sequence. For each frame, the regions are ordered according to their relative depth using information from the previous and following frames. The algorithm estimates occlusions relying on a hierarchical region-based representation of the image by means of a binary tree. This representation is used to define the final depth order partition which is obtained through an energy minimisation process. Finally, to achieve a global and consistent depth ordering, a depth order graph is constructed and used to eliminate contradictory local cues. The system is evaluated and compared with the state-of-the-art figure/ground labelling systems showing very good results.read more
Citations
More filters
DissertationDOI
Enhancing low-level features with mid-level cues
TL;DR: An approach to dense stereo reconstruction with spatiotemporal features, which unlike existing works remains applicable to wide baselines, and a technique to exploit segmentation cues to construct dense descriptors invariant to background variability, such as occlusions or background motion.
Proceedings ArticleDOI
Motion Occlusions for Automatic Generation of Relative Depth Maps
TL;DR: An automatic method to generate relative depth maps from monocular video sequences that relies on the dynamic occlusion depth cue to recover the depth order of objects in the scene while removing a computationally costly step from the processing.
References
More filters
Journal ArticleDOI
Introduction to algorithms: 4. Turtle graphics
TL;DR: In this article, a language similar to logo is used to draw geometric pictures using this language and programs are developed to draw geometrical pictures using it, which is similar to the one we use in this paper.
Journal ArticleDOI
Contour Detection and Hierarchical Image Segmentation
TL;DR: This paper investigates two fundamental problems in computer vision: contour detection and image segmentation and presents state-of-the-art algorithms for both of these tasks.
Book ChapterDOI
High Accuracy Optical Flow Estimation Based on a Theory for Warping
TL;DR: By proving that this scheme implements a coarse-to-fine warping strategy, this work gives a theoretical foundation for warping which has been used on a mainly experimental basis so far and demonstrates its excellent robustness under noise.
Proceedings ArticleDOI
Rank aggregation methods for the Web
TL;DR: A set of techniques for the rank aggregation problem is developed and compared to that of well-known methods, to design rank aggregation techniques that can be used to combat spam in Web searches.
Related Papers (5)
Integrated segmentation and depth ordering of motion layers in image sequences
David Tweed,Andrew Calway +1 more
Dense 3-D Structure from Image Sequences Using Probabilistic Depth Carving
Annie Yao,Andrew Calway +1 more
Interpolating Novel Views from Image Sequences by Probabilistic Depth carving
Annie Yao,Andrew Calway +1 more