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This paper presents a novel smart camera BiCa360 for real-time 360° panoramic views using a rotating dynamic vision sensor at up to 10 rotations per sec. The system consists of (1) a dual-line dynamic vision sensor generating events at high temporal resolution, on-chip time stamping (1µs resolution), having a high dynamic range and the sparse visual coding of the information, (2) a high-speed mechanical...
This paper presents the novel smart camera “360SCAN” generating real-time 360ß panoramic edge maps using a rotating dynamic vision sensor at up to 10 rotations per sec. The system consists of (1) a bio-inspired dynamic vision line sensor asynchronously reacting to relative contrast changes at high temporal resolution with on-chip time stamping (1µs resolution), having a high dynamic range and the...
We present and demonstrate a technique for coherent beam combining of fibre amplifiers using phase conjugation by digital holography. The method is also applied to realize beam correction on multimode and multicore fibers.
The authors have proposed a new technique of coherent fiber combining based on digital holography. Phase locking of three passive fibers has been experimentally demonstrated. The advantages of this scheme is that no complicated electronic feedback loop is required. Owing to high spatial resolution of existing SLMs and cameras, a large number of fiber amplifiers could be coherently combined. Moreover...
Face recognition finds its place in a large number of applications. They occur in different contexts related to security, entertainment or Internet applications. Reliable face recognition is still a great challenge to computer vision and pattern recognition researchers, and new algorithms need to be evaluated on relevant databases. The publicly available IV2 database allows monomodal and multimodal...
This paper presents a method for localization of landmarks on 3D faces. Gabor wavelets are used to extract the curvature of the 3D faces which is then used for performing a coarse detection of landmarks. As a second step, an ICP with a mean face is locally applied on each characteristic point in order to enhance the precision of the detection and to detect possible errors. Experiments realized on...
Volume recording is the key to increase optical storage density. Disc transparency requires the pits of each layer to generate very small phase shift to the transmitted beam. Readout of very shallow phase shift has been proven possible, and new tracking methods have been designed. We showed that focused recording can work up to a few hundred layers with good power efficiency and realistic optical...
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