Recent progress in computer science enables the use of instrument guidance systems for open liver surgery. However, challenge remains when precise alignment between the pre-operative image data and the intra-operative situation is required, since the liver is subject to deformation and movements during the surgical treatment. Fusion of intra-operative navigated US with the pre-operative data is...

Image transmission with JPEG2000 can be speeded up by using regions of interest (RoIs). By such a mechanism, parts of an image not belonging to RoIs can be transmitted later or encoded at a lower bit rate. This paper describes a flexible dynamic RoI-scheme which supports the definition and handling of arbitrarily-shaped RoIs in JPEG2000. The scheme supports the dynamic definition and prioritiza...

The automatic analysis of video sequences with individuals performing some actions is currently receiving much attention in the computer vision community. Among the different visual features chosen to tackle the problem of action recognition, local histogram within a region of interest is proven to be very effective. However, we study for the first time whether spatiograms, which are histograms...

This paper deals with segmentation of breast anatomical regions, pectoral muscle, fatty and fibroglandular regions, using a Bayesian approach. This work is a part of a computer aided diagnosis project aiming at evaluating breast cancer risk and its association with characteristics (density, texture, etc.) of regions of interest on digitized mammograms. Novelty in this paper consists in applying...

This paper presents an algorithm using scene analysis methods to detect, track and label moving objects in order to optimize the active time of a traffic light performing, on demand, car flow control at a pedestrian road crossing. The algorithm detects blobs moving on the scene, try to label them as pedestrians or vehicles and tracks them along the scene. Thc decision logic turns on the traffic...

Point-based registration of images strongly depends on the extraction of suitable landmarks. Recently, different 3D operators have been proposed in the literature for the detection of anatomical point landmarks in 3D images. In this paper, we investigate nine 3D differential operators for the detection of point landmarks in 3D MR and CT images. These operators are based on either first, second,...

ii ACKNOWLEDGEMENTS My sincere thanks to my advisor Prof Nikil Jayant for his faith, support, and guidance during my PhD years. He has been a source of constant inspiration, and I have learnt from him a spectrum of things-the art grateful to my parents and my brother for their affection. Their love and prayers have been selfless and unconditional, and their patience unparalleled. I am also happ...

Introduction Laboratory biosafety – a component of biosecurity – has specific elements that together, comprise a facility’s capability to both protect employees and the surrounding public and environment. Measuring these elements permits assessment and the costing of program-specific safety interventions. In the absence of a strategy and toolset, we developed a conceptual framework and toolset ...

Thermography is a technique widely used for inspection of electrical equipment’s operating conditions. However, its operation, predominantly manual, hampers more reliable diagnosis of component’s abnormality indications. This paper presents a straightforward hybrid stereo vision configuration for autonomous monitoring systems that uses images visible and infrared spectrum to identify, character...

In any medical data analysis a good visualization of specific parts or tissues are fundamental in order to perform accurate diagnosis and treatments. For a better understanding of the data, a segmentation process of the images to isolate the area or region of interest is important to be applied beforehand any visualization step. In this paper we present a method for mandibular structure surface...