Abstract Computer aided diagnosis is a hot research field. Systems with the ability to provide a highly accurate diagnosis using little resources are highly desirable. One type of such systems depend on medical images to provide instantaneous diagnosis based on some discriminative features extracted from the images after processing them for noise removal and enhancement. In this paper, we propose a... Computer aided diagnosis is a hot research field. Systems with the ability to provide a highly accurate diagnosis using little resources are highly desirable. One type of such systems depend on medical images to provide instantaneous diagnosis based on some discriminative features extracted from the images after processing them for noise removal and enhancement. In this paper, we propose a system to automatically detect fractures in hand bones using x-ray images. To the best of our knowledge, this problemhave never been addressed before. For a first attempt to tackle such a difficult problem, our system performed incredibly good with a 91.8% accuracy. Read More Read Less

Abstract Video streaming through peer-to-peer (P2P) networks using scalable video coding (SVC) has been an active research. In this way, we propose to design and implement such solution by using a JXTA peer-to-peer framework to share and stream scalable videos. This new architecture use jointly the scalable video coding H.264/SVC and JXTA P2P network in term of video streaming especially Video-On-Demand... Video streaming through peer-to-peer (P2P) networks using scalable video coding (SVC) has been an active research. In this way, we propose to design and implement such solution by using a JXTA peer-to-peer framework to share and stream scalable videos. This new architecture use jointly the scalable video coding H.264/SVC and JXTA P2P network in term of video streaming especially Video-On-Demand (VoD). Most importantly, in this architecture we include some relevant metrics that reflect the key features of perceived video quality adaptation for different resources consumption. For this purpose, we have defined some objective metrics Quality of Experience (oQoE) by exploiting parameters offered by SVC (SVC level, Bitrate and SNR) which are designed to correlate with subjective Quality of Experience (sQoE), typically described by the Mean Opinion Score (MOS), and, thus avoid cost and time intensive empirical evaluations. This paper proposes design and implement video streaming through JXTA P2P networks using SVC.The problem is well motivated. The experimental results show that the proposed schemes based on the strong relationship between sQoE and oQoE provide a good control for studies factors relating to QoE. Read More Read Less

Abstract Many computer programs have graphical user interfaces (GUIs). UI layout supports efficient use of screen real estate. Most GUIs do not have a fixed layout, but are resizable and able to adapt sizes of window, screen and widgets. Constraints are a powerful tool for specifying adaptable GUI layouts: they are used to specify a layout in a general form, and... Many computer programs have graphical user interfaces (GUIs). UI layout supports efficient use of screen real estate. Most GUIs do not have a fixed layout, but are resizable and able to adapt sizes of window, screen and widgets. Constraints are a powerful tool for specifying adaptable GUI layouts: they are used to specify a layout in a general form, and a constraint solver is used to find a satisfying concrete layout, e.g. for a specific GUI size. The constraint solver has to calculate a new layout every time a GUI is resized or changed, so it needs to be efficient to ensure a good user experience. One approach for constraint solvers is based on the Gauss-Seidel algorithm and successive over-relaxation (SOR). Another frequently used approach is based on Kaczmarz. Our observation is that a solution after resizing or changing is similar in structure to a previous solution. Thus, we hypothesize that we can increase the computational performance of Kaczmarz and SOR-based constraint solvers if we reuse the solution of a previous layout to warm-start the solving of a new layout. In this article we report on experiments to test this hypothesis experimentally for three common use cases: big-step resizing, small-step resizing and constraint change. In our experiments, we measured the solving time for randomly generated GUI layout specifications of various sizes. For all three cases we found that the performance is improved if an existing solution is used as a starting solution for a new layout. Read More Read Less