Aous Thabit Naman

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The goal of this study was to establish a protocol for the retrieval and fractographic analysis of failed restorations, and to compare the fracture surface features of clinically failed ceramic restorations and with those of controlled laboratory test specimens fabricated from the same materials. Ten fractured Dicor crowns and 12 fractured Cerestore crows(More)
We propose a novel paradigm for interactive video streaming and we coin the term JPEG2000-based scalable interactive video (JSIV) for it. JSIV utilizes JPEG2000 to independently compress the original video sequence frames and provide for quality and spatial resolution scalability. To exploit interframe redundancy, JSIV utilizes prediction and conditional(More)
A novel paradigm for optimized scalable video streaming is presented. The paradigm proposes transmission of motion vectors and selected code-blocks of the JPEG 2000 representation of each new frame, instead of frame differences as in existing methods. These code-blocks are selected to achieve the highest MSE. This paradigm overcomes the flexibility and(More)
In a recent work, the authors proposed a novel paradigm for interactive video streaming and coined the term JPEG2000-Based Scalable Interactive Video (JSIV) for it. In this work, we investigate JSIV when motion compensation is employed to improve prediction, something that was intentionally left out in our earlier treatment. JSIV relies on three concepts:(More)
A video stored as a sequence of JPEG2000 images can provide the scalability, flexibility, and accessibility that is lacking in current predictive motion-compensated video coding standards; however, streaming this sequence would consume considerably more bandwidth. This paper presents a new method for optimized streaming of a JPEG2000 video that relies on(More)
We recently proposed a novel approach that employs motion hints for inter-frame prediction. Motion hints are a loose and global description of motion communicated as metadata; they specify motion but they leave it to the client/decoder to find the exact locations where motion is applicable. This work proposes a multi-scale approach for identifying these(More)
We present a noniterative multiresolution motion estimation strategy, involving block-based comparisons in each detail band of a Laplacian pyramid. A novel matching score is developed and analyzed. The proposed matching score is based on a class of nonlinear transformations of Laplacian detail bands, yielding 1-bit or 2-bit representations. The matching(More)
In traditional video coding schemes, motion information is tightly coupled to the prediction strategy. In this preliminary work, we depart from this model by utilizing metadata to convey motion information to the client; in particular, metadata conveys crude boundaries of objects together with motion information for these objects. Here, we are interested in(More)
Streaming video as a sequence of JPEG2000 images provides the scalability, flexibility, and accessibility at a wide range of bit-rates that is lacking from the current motion-compensated predictive video coding standards; however, streaming this sequence requires considerably more bandwidth. The authors have recently proposed a novel approach that reduces(More)
This paper presents a novel measure for identifying strong structure features, such as edges, from randomness, such as regions predominated by noise, within an image. The proposed structural measure is localized in space and scale; for a given scale, it gives values close to one in the vicinity of strong structures and close to zero in regions predominated(More)