26 research outputs found
Enhanced Tracking Aerial Image by Applying Frame Extraction Technique
An image registration method is introduced that is capable of registering images from different views of a 3-D scene in the presence of occlusion. The proposed method is capable of withstanding considerable occlusion and homogeneous areas in images. The only requirement of the method is for the ground to be locally flat and sufficient ground cover be visible in the frames being registered. With help of fusion technique we solve the problem of blur images. In previous project sometime object recognition is not possible they do not show appropriate area, path and location. So with the help of object recognition we show the appropriate location, path and area. Then it captured the motion images, static images, video and CCTV footage also. Because of occlusion sometime result not get correct or sometime problems are occurred but with the help of techniques solve the problem of occlusion. This method is applicable for the various investigation departments. For the purpose of tracking such as smuggling or any unwanted operations which are apply or performed by illegally. Various types of technique are applied for performing the tracking operation. That technique return the correct result according to object tracking. Camera is not supported this type of operation because they do not return the clear image result. So apply the drone and aircraft for capturing the long distance or multiview images
Phase amplified correlation for improved sub-pixel motion estimation
Phase correlation (PC) is widely employed by several sub-pixel motion estimation techniques in an attempt to accurately and robustly detect the displacement between two images. To achieve sub-pixel accuracy, these techniques employ interpolation methods and function-fitting approaches on the cross-correlation function derived from the PC core. However, such motion estimation techniques still present a lower bound of accuracy that cannot be overcome. To allow room for further improvements, we propose in this paper the enhancement of the sub-pixel accuracy of motion estimation techniques by employing a completely different approach: the concept of motion magnification. To this end, we propose the novel phase amplified correlation (PAC) that integrates motion magnification between two compared images inside the phase correlation part of frequencybased motion estimation algorithms and thus directly substitutes the PC core. The experimentation on magnetic resonance (MR) images and real video sequences demonstrates the ability of the proposed PAC core to make subtle motions highly distinguishable and improve the sub-pixel accuracy of frequency-based motion estimation techniques
The design and control of an actively restrained passive mechatronic system for safety-critical applications
Development of manipulators that interact closely with humans has been a focus of research in
fields such as robot-assisted surgery and haptic interfaces for many years. Recent introduction
of powered surgical-assistant devices into the operating theatre has meant that robot
manipulators have been required to interact with both patients and surgeons. Most of these
manipulators are modified industrial robots. However, the use of high-powered mechanisms in
the operating theatre could compromise safety of the patient, surgeon, and operating room staff.
As a solution to the safety problem, the use of actively restrained passive arms has been
proposed. Clutches or brakes at each joint are used to restrict the motion of the end-effector to
restrain it to a pre-defined region or path. However, these devices have only had limited success
in following pre-defined paths under human guidance.
In this research, three major limitations of existing passive devices actively restrained are
addressed. [Continues.
Aeronautics and space report of the President, 1980 activities
The year's achievements in the areas of communication, Earth resources, environment, space sciences, transportation, and space energy are summarized and current and planned activities in these areas at the various departments and agencies of the Federal Government are summarized. Tables show U.S. and world spacecraft records, spacecraft launchings for 1980, and scientific payload anf probes launched 1975-1980. Budget data are included
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Advances in biophysical methods for protein detection and characterisation
Proteins are the building blocs of life and mediate nearly every function in the cell. They are therefore a major and incredibly wide research topic. Their functions and malfunctions have serious impacts on a wide range of diseases. Proteins may be used as extremely versatile tools for biology such as for gene editing or biological medical products. Developing novel methods for protein detection and characterisation may thus have a tremendous impact on modern medicine and research. The present thesis discusses advances in biophysical methods for protein detection and characterisation.
First, the possibility of detecting proteins label-free is addressed. A label may change the behaviour of the target protein. Two approaches are investigated: An ultraviolet light based autofluorescence microscope is described; and scattering based detection is explored by expending on the existing interferometric scattering (iSCAT) technique. An oblique illumination approach helps with increasing the contrast of the data, and a time correlation technique is used for local sizing on chip. Second, microfluidic techniques are routinely used to create protein assays. These assays minimise the amount of sample required and the absence of turbulences enable new techniques. A method to easily add nanofluidics elements to microfluidic designs is discussed. Finally, three characterisation methods are described. First, diffusional sizing uses a microfluidic chip to create a concentration gradient. The protein diffusion coefficient is extracted from the time evolution of this gradient. Second, the diffusiophoretic coefficient of the protein can be extracted by diffusiophoresis, which is the motion of proteins driven by the concentration gradient of another solute. This could be an important protein motion mechanism, as many gradients are present in cells and in living beings. Finally, the spatial propagation of the protein amyloid-beta 1-42, a protein associated to neurodegenerative disorders, is observed in a capillary
Visualization and manipulation of repair and regeneration in biological systems using light
Tissue repair after an injury is a fundamental process in biomedicine. It can involve regeneration, which uses new growth to restore tissue function. The interest in repair and regeneration is motivated by the desire to treat injuries and diseases and has attracted researchers for centuries. In the last decades, it evolved in the field of regenerative medicine, which has the ultimate goal of providing strategies for regenerating human cells, tissues, or even organs, for instance, via engineering principles.
Already since the first experiments on regeneration by Abraham Trembley, novel findings in biomedicine, repair, and regeneration have been enabled or accompanied by research in optics, for example, on the development of novel microscopy techniques. Nowadays, novel optical techniques are advancing, which allow to understand the role of single cells in tissue repair processes. Moreover, repair processes within cells can be visualized and manipulated. Ultimately, optics can provide enabling techniques for regenerative therapies. This habilitation thesis aims to present several of these advances.
On a single cell level, femtosecond laser nanosurgery was used to target specific intracellular structures during concurrent imaging in vitro. The relation of femtosecond laser nanosurgery to the cell state and cellular staining was investigated. Manipulation of single Z-discs in cardiomyocytes using a femtosecond oscillator laser system was accomplished, which allows to better elucidate the role of a single Z-disc in cardiomyocyte function. In particular, measurements on cell survival, (calcium-) homeostasis, and morphology yielded only minor deviations from control cells after single Z-disc ablation. A reduction in force generation was elucidated via traction force microscopy and gene expression level changes, for instance, an upregulation of -actinin were examined.
Additionally, light-based systems to influence single cells in their alignment or to trigger single cells, for example, to activate other cells via optogenetics were applied. On the tissue scale, imaging via confocal microscopy or multiphoton microscopy has been applied for various contexts of regenerative approaches. Furthermore, a fiber-based imaging approach, which could later be used for longitudinal imaging in vivo and builds upon a fluorescence microscope system and an imaging fiber bundle in combination with reconstruction via a neural network, was developed. As another imaging strategy, an abdominal imaging window served to image the mouse liver in vivo via multiphoton microscopy in successive imaging sessions. Manipulation in tissue was applied in colonoids, which resemble the structure of the colon on an in vitro scale, and revealed different cell dynamics dependent on the location of the damage. In particular, activation of the Wnt signaling pathway after crypt damage was observed. Cell ablation via a femtosecond laser amplifier system during concurrent two-photon microscopy was also established during in vivo liver imaging to study micro-regenerative processes.
Furthermore, laser-based delivery processes with novel materials or in the context of genome editing using CRISPR/Cas9 technology were investigated as enabling technologies for regenerative medicine. In conclusion, this thesis addresses the question of how optics can help to illuminate future directions in research on tissue repair and regeneration, as well as, regenerative therapies by addressing (longitudinal) imaging in a complex environment, sophisticated cell-manipulation strategies, and the application of novel materials for laser-based delivery
Earth Resources: A continuing bibliography with indexes
This bibliography lists 475 reports, articles and other documents introduced into the NASA scientific and technical information system between January 1 and March 31, 1984. Emphasis is placed on the use of remote sensing and geophysical instrumentation in spacecraft and aircraft to survey and inventory natural resources and urban areas. Subject matter is grouped according to agriculture and forestry, environmental changes and cultural resources, geodesy and cartography, geology and mineral resources, hydrology and water management, data processing and distribution systems, instrumentation and sensors, and economical analysis
Shaping the future by engineering: 58th IWK, Ilmenau Scientific Colloquium, Technische Universität Ilmenau, 8 - 12 September 2014 ; programme
Druckausgabe erschienen im Universitätsverlag Ilmenau:
Shaping the future by engineering : 58th IWK, Ilmenau Scientific Colloquium, Technische Universität Ilmenau, 8 - 12 September 2014 ; programme / Department of Mechanical Engineering, Technische Universität Ilmenau. [Hrsg.: Peter Scharff. Red.: Andrea Schneider]
Ilmenau : Univ.-Verl. Ilmenau, 2014. - 155 S.
ISBN 978-3-86360-085-
Factories of the Future
Engineering; Industrial engineering; Production engineerin