George A. Stanciu

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Confocal laser scanning microscopy (CLSM) enables us to capture images representing optical sections on the volume of a specimen. The images acquired from different layers have a different contrast: the images obtained from the deeper layers of the specimen will have a lower contrast with respect to the images obtained from the topmost layers. The main(More)
The accurate staging of liver fibrosis is of paramount importance to determine the state of disease progression, therapy responses, and to optimize disease treatment strategies. Non-linear optical microscopy techniques such as two-photon excitation fluorescence (TPEF) and second harmonic generation (SHG) can image the endogenous signals of tissue structures(More)
Biofilms formed by bacterial cells are associated with drastically enhanced resistance against most antimicrobial agents, contributing to the persistence and chronicization of the microbial infections and to therapy failure. The purpose of this study was to combine the unique properties of magnetic nanoparticles with the antimicrobial activity of three(More)
Besides the variety of the polytypes, SiC technology appears to have at the moment some limitations due to the defects present in the crystalline structure. For this reason the massive characterization of the defects as well as any different polytype inclusion is of great importance. The aim of the present work is to mark out different techniques based on(More)
In microscopy the detection, recognition and description of features contained in the images constitute important problems. Recently there have been developed a series of techniques for invariant feature detection/description that can provide the detection of a set of key points in one image, key points that are invariant to effects like rotation, scale(More)
In microscopy the detection, recognition and description of objects contained in images constitute important problems. Recently there have been developed a series of techniques for invariant feature detection/description. These techniques can provide the detection of a set of key points in one image, key points that are invariant to effects like rotation,(More)
In our work we present some investigations on biological samples at micro and nanoscale by using nonlinear effects in laser scanning microscopy techniques. We developed an integrated multimodal system that allows for the simultaneous image acquisition from multiple optical imaging modalities. Our system includes several microscopy techniques working in far(More)
Pairs of images of the same fleld-of-view collected by two complementary Laser Scanning Microscopy (LSM) work-modes are packed together by embedding one image of the pair into the other by reversible watermarking. One image remains visible and the other can be easily extracted at no extra transmission bandwidth cost. The packing keeps together the data(More)
The Bag-of-Features (BoF) paradigm has been introduced to the field of computer vision about a decade ago. Since then, its potential for image classification and retrieval tasks has been demonstrated in numerous experiments, which contributed to BoF approaches becoming well-established in the field. The BoF methods reported to date use mainly spatial(More)
Colloidal nanoparticles represent an interesting class of materials as they exhibit unique optical, electronic and magnetic properties. Nanoscale optical imaging is essential for observing in detail the optical properties of these materials and for optimizing the associated synthesis procedures in order to make them fit a specific purpose. In the presented(More)