Two different approaches are here presented for converting speech into graphic animation, suitable to lipreading. Coarticulation modeling has been taken into account by means of an original algorithm for multistep sta...
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Two different approaches are here presented for converting speech into graphic animation, suitable to lipreading. Coarticulation modeling has been taken into account by means of an original algorithm for multistep statistical processing of digital speech in the cepstrum space. Two different visualization methods have been used, the first based on key reference pictures and the second based on a parametric flexible structure. Speech is converted, in real-time, into lipreadable visual animation by associating incoming acoustic frames with correspondent consistent graphic primitives, pictures or parameters, suitably visualized. Multiple fields of application are foreseen, mainly in rehabilitation, training, education and communication among hard of hearing people.< >
Describes a computer-aided geological interpretation system developed for radio attenuation tomographic imaging of subsurface geology with immediate application in mining geophysics. Measurements in remote sensing are...
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Describes a computer-aided geological interpretation system developed for radio attenuation tomographic imaging of subsurface geology with immediate application in mining geophysics. Measurements in remote sensing are often expensive so that, in practice, the data-interpretation process is plagued by insufficient data. Inverse procedures are generally ill-posed leading to the use of regularization techniques which are mathematically tractable but rarely physically relevant to the problem. The authors' response to this has been to invert the normal imaging philosophy. Instead of using the data to reconstruct an image for interpretation by some domain expert, they provide a computational system in which set theoretic techniques are used to modify hypotheses provided by the expert in image form to make them consistent with the data and other constraints. This is an implementation of the hypothetico-deductive model of scientific method. While the actual image-processing algorithms such as tomographic inversion are based on sophisticated techniques, the authors have made a considerable effort to remove this level of abstraction for the benefit of geologists and geophysicists who are the target users. By employing X-Windows-based, graphical user interface methods, in conjunction with graphics and image-based visualization, the system can be used intuitively to explore the possibilities offered by the data without an extensive knowledge of the processing techniques. The application of the system to field examples from the Australian mining industry is shown in the interactive presentation.< >
This paper describes a novel sensor designed to provide information on some basic variables of paper during its manufacture. Depending on the type of grade, the instrument is easily configurable to measure anyone of t...
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This paper describes a novel sensor designed to provide information on some basic variables of paper during its manufacture. Depending on the type of grade, the instrument is easily configurable to measure anyone of three variables, namely: dimensional variations of paper (shrinkage), flocculation and creeping (tissue paper). The paper presents the basic concepts behind each technique used and describes the human interfaces of this equipment. Finally, the problem of spectral rotation due to camera misadjustments is addressed.< >
Describes a modeling system for the simulation of the Multi-angle Imaging Spectro-Radiometer (MISR) instrument push-broom data to be used in the prototyping of the MISR ground data system. The data are being simulated...
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Describes a modeling system for the simulation of the Multi-angle Imaging Spectro-Radiometer (MISR) instrument push-broom data to be used in the prototyping of the MISR ground data system. The data are being simulated using the known characteristics of the instrument and spacecraft position and pointing. Rendering software obtained from the Digital image Animation Laboratory (DIAL) at JPL has been modified to model multi-angle push-broom data. Landsat TM data are used as input radiance.< >
One of the central problems encountered in image coding concerns the high bit rate required for the transmission and storage of image sequences. To reduce this bit rate prediction coders are commonly used. This paper ...
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Raytheon Semiconductor Division has been introducing a growing series of video and imageprocessing integrated circuits. The two newest offerings, a video encoder and a genlocking digitizer, facilitate overlays of dig...
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ISBN:
(纸本)0780312813
Raytheon Semiconductor Division has been introducing a growing series of video and imageprocessing integrated circuits. The two newest offerings, a video encoder and a genlocking digitizer, facilitate overlays of digital computergraphics and/or text data onto a standard analog NTSC or PAL baseband television signal.
Spatial image warping is useful for imageprocessing and graphics. The authors present optimal concurrent-read-exclusive-write (CREW) and exclusive-read-exclusive-write (EREW) parallel-random-access-machine (PRAM) alg...
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The ability to generate visual representations of data, and the ability to enhance data into a suitable form for the purpose of visual representation, form two key components in a scientific visualization system. By a...
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ISBN:
(纸本)0818649208
The ability to generate visual representations of data, and the ability to enhance data into a suitable form for the purpose of visual representation, form two key components in a scientific visualization system. By a visual representation we mean the ability to render the data, using visual cues, such that the important features are readily perceived by the user. By the ability to enhance data we mean the ability to apply transformations to the data so that salient features embedded in the data become discernible and quantifiable. The rendering of data, computergraphics, and the enhancement of data, imageprocessing, have emerged over the last twenty years into separate scientific disciplines. However, in scientific visualization and other applications of empirical data interpretation, we are increasingly confronted with the need to combine both data rendering and data transformation capabilities under one system framework [1]. This paper describes the design issues and implementation of a program for visualizing and enhancing volume data on distributed memory architectures. Our design is motivated by the desire to interactively view, transform, and interpret volume data acquired using seismic imaging techniques. Experimental results derived from an implementation on the Connection Machine CM-5 are described.
One of the central problems encountered in image coding concerns the high bit rate required for the transmission and storage of image sequences. To reduce this bit rate prediction coders are commonly used. This paper ...
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One of the central problems encountered in image coding concerns the high bit rate required for the transmission and storage of image sequences. To reduce this bit rate prediction coders are commonly used. This paper gives an overview of some of the aspects of the implementation of a semantic image coder to solve this problem for a specific class of images. A semantic image coder uses a three-dimensional model of the scene to predict the next image in an image sequence. Sophisticated computergraphics techniques are required to realistically render the resultant model and computer vision techniques are required to extract the parameters of the computer model from the given scene.< >
Spatial image warping is useful for imageprocessing and graphics. The authors present optimal concurrent-read-exclusive-write (CREW) and exclusive-read-exclusive-write (EREW) parallel-random-access-machine (PRAM) alg...
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Spatial image warping is useful for imageprocessing and graphics. The authors present optimal concurrent-read-exclusive-write (CREW) and exclusive-read-exclusive-write (EREW) parallel-random-access-machine (PRAM) algorithms that achieve O(1) asymptotic run time. The significant result is the creative processor assignment that results in an EREW PRAM forward direct warp algorithm. The forward algorithm calculates any nonscaling affine transform. The EREW algorithm is the most efficient in practice, and 16k processor MasPar MP-1 can rotate a 4 million element image in under a second and a 2 million element volume in 1/2 of a second. This high performance allows interactive viewing of volumes from arbitrary viewpoints and illustrates linear speedup.< >
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