For efficient generation of realistic images, 4 kinds of generic models(data-, object-, role- and process-models) are introduced in the system based on the Extensible WELL(Window-based ELaboration Language) which has ...
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ISBN:
(纸本)0819424234
For efficient generation of realistic images, 4 kinds of generic models(data-, object-, role- and process-models) are introduced in the system based on the Extensible WELL(Window-based ELaboration Language) which has been reported previously. these models are constructed so thatthey have hierarchical interfaces from data to processes. In order to satisfy multiple intentions interacting with each other, concepts of roles are introduced. Each role is recognized as a set of the object-networks, and the respective user's intentions are referred to a set of executions of many roles. Object-networks which consists of noun-objects and verb objects express transitions of states. In each occurence of transition, the user's intention is issued in an event driven manner, and it provides concurrent processes. Multiple roles are made interactive with each other by using the common platform which consists of windows. Each role is specified as a structure of the object-network, which is defined by a graph structure. Every object has templates which define data structure. Data of objects are specified by constraint-relating attributes of objects or referring to user's data driven action. By concepts of constraints and models, roles, realistic images are obtained with the least data. Some examples for human movements are demonstrated.
Real-time low light level (LLL) imageprocessingtechnology is the important developmental subject in the area of LLL night vision. Butthere is an essential distinction between the LLL tV image and ordinary tV image,...
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ISBN:
(纸本)0819422991;9780819422996
Real-time low light level (LLL) imageprocessingtechnology is the important developmental subject in the area of LLL night vision. Butthere is an essential distinction between the LLL tV image and ordinary tV image, so the conventional digital imageprocessingtechnique aren't suitable for LLL image. In this paper, the noise theoretical model of LLL imaging system is described and the LLL imageprocessing system is set up. With regard to the characteristics of LLL image and its noise, a novel noise suppression method, adaptive mode filter, is presented. the experimental results show thatthe adaptive mode filter can suppress the sharp noise of LLL image effectively, and as for the protection of the image edge, the property of adaptive mode filter is better that of median filter. Finally, the processing results and the conclusions are given.
Real-time low light level (LLL) imageprocessingtechnology is the important developmental subject in the area of LLL night vision. Butthere is an essential distinction between the LLL tV image and ordinary tV image,...
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ISBN:
(纸本)0819422991
Real-time low light level (LLL) imageprocessingtechnology is the important developmental subject in the area of LLL night vision. Butthere is an essential distinction between the LLL tV image and ordinary tV image, so the conventional digital imageprocessingtechnique aren't suitable for LLL image. In this paper, the noise theoretical model of LLL imaging system is described and the LLL imageprocessing system is set up. With regard to the characteristics of LLL image and its noise, a novel noise suppression method, adaptive mode filter, is presented. the experimental results show thatthe adaptive mode filter can suppress the sharp noise of LLL image effectively, and as for the protection of the image edge, the property of adaptive mode filter is better that of median filter. Finally, the processing results and the conclusions are given.
It has been approximately five years since Kodak introduced t1 notion ofan "imaging Chain' at anelectronicimaging Workshop in tokyo. that metaphor gave rise to a diagram that shwed how conventional silver-ha...
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ISBN:
(纸本)0819417637
It has been approximately five years since Kodak introduced t1 notion ofan "imaging Chain' at anelectronicimaging Workshop in tokyo. that metaphor gave rise to a diagram that shwed how conventional silver-halide and electmnic photography could relate to one anot1r. Atthis Symposium we will take this idea one step further. We will discuss a new idea —the Digital StilL read noise, x-ray, ultra-violet, high speed readout.
Most real time CCD video cameras are designed to operate on tV format. However, tV format CCD cameras have some basic limitations in many applications due to the interlace scanning, limited horizontal scanning lines p...
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ISBN:
(纸本)0819417637
Most real time CCD video cameras are designed to operate on tV format. However, tV format CCD cameras have some basic limitations in many applications due to the interlace scanning, limited horizontal scanning lines per frame and relatively low scanning speed. Non-tV format cameras have now been developed based on progressive scan interline transfer CCDs in order to optimize performance in high speed machine vision, electronic shutter applications, dynamic motion frame capturing, high resolution real time imaging and direct computer interface applications. the simultaneous exposure of all pixels and the structure of the substrate drain mechanism make it possible to operate the high speed electronic shutter with full frame resolution and uniform long integration. the digital processing, built-in frame memory and output format are described herein for asynchronous reset and image capturing, long integration image capturing, and scan conversion. the noise characteristics and the specific CCD characteristics during high speed electronic shutter are studied from a camera design standpoint. A Peltier-cooled CCD camera and an image intensifier-to-camera coupling are studied for real time, high resolution fluorescent microscopy applications. A progressive scan color camera is also described. the CCD color filter, color processing (digital processing), and output format are discussed.
A motion image acquisition technique that enhances resolution by combining periodic position-shifting of the CCD sensor with motion adaptive processing is described. the technique is applied in a prototype system that...
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ISBN:
(纸本)0819417637
A motion image acquisition technique that enhances resolution by combining periodic position-shifting of the CCD sensor with motion adaptive processing is described. the technique is applied in a prototype system that employs an HDtV CCD sensor that is shifted alternately by half a pixel pitch in the horizontal and vertical directions in synchrony with the frame frequency. the series of four frame images so obtained is integrated into one image as an output frame image for each frame. the resolution is enhanced by this integration, butthis technique is not effective for moving regions because of image lag. therefore, moving regions are reproduced by using only the latest frame image. Still and moving regions are synthesized using the movement coefficient derived from the frame difference signal over the past four frames. the resolution of the moving region is half that of the still region. However, this difference in resolution cannot be perceived clearly because the resolving power of the human eye is low for a moving region. An evaluation of the prototype system confirmed thatthis technique enhances the resolution in both the vertical and horizontal directions, and that high-quality images far superior to HDtV can be output.
An imaging system for monitoring traffic on multi-lane highways is discussed. the system, named Safe-t-Cam™, is capable of operating 24 hours per day in all but extreme weather conditions and can capture still images ...
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ISBN:
(纸本)0819417637
An imaging system for monitoring traffic on multi-lane highways is discussed. the system, named Safe-t-Cam™, is capable of operating 24 hours per day in all but extreme weather conditions and can capture still images of vehicles travelling up to 1 60 km/hr. systems operating at different remote locations are networked to allow transmission of images and data to a control centre. A remote site facility comprises a vehicle detection and classification module (VCDM), an image acquisition module (IAM) and a licence plate recognition module (LPRM). the remote site is connected to the central site by an ISDN communications network. the remote site system is discussed in this paper. the VDCM consists of a video camera, a specialised exposure control unitto maintain consistentimage characteristics, and a 'real-time' imageprocessing system that processes 50images per second. the VDCM can detect and classify vehicles (e.g. cars from trucks). the vehicle class is used to determine what data should be recorded. the VCDM uses a vehicle tracking technique to allow optimum triggering of the high resolution camera of the IAM. the JAM camera combines the features necessary to operate consistently in the harsh environment encountered when imaging a vehicle 'head-on' in both day and night conditions. the image clarity obtained is ideally suited for automatic location and recognition of the vehicle licence plate. this paper discusses the camera geometry, sensor characteristics and the imageprocessing methods which permit consistent vehicle segmentation from a cluttered background allowing object oriented pattern recognition to be used for vehicle classification. the image capture of high resolution images and the image characteristics required for the LPRM's automatic reading of vehicle licence plates, is also discussed. the results of field tests presented demonstrate thatthe vision based Safe-t-Cam™ system, currently installed on open highways, is capable of producing automatic
Competitive electronicimagingsystems are emerging due to rapidly declining processing power and storage costs. imaging converts information on paper to electronic pictures. For applications involving large quantitie...
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ISBN:
(纸本)0819417106
Competitive electronicimagingsystems are emerging due to rapidly declining processing power and storage costs. imaging converts information on paper to electronic pictures. For applications involving large quantities of paper documents, the resulting pictures are further processed by automated character recognition systems, resulting in a text representation of the original document. Current character recognition accuracy varies from one implementation to the next, and greatly depends on each particular application. We define a set of information fusion rules for combining character recognition system output. the combined result has a higher character recognition accuracy and lower error rate than either of the individual recognizer outputs taken separately. this new set of fusion heuristics takes advantage of the following information from multiple text string recognition systems simultaneously: (1) multiple hypotheses and associated confidences for each character in a text string;(2) multiple text string segmentation hypotheses;(3) separate or combined hypotheses for both uppercase and lowercase alphabetic characters;and (4) overall text string hypotheses and associated confidences. traditionally, only the last of these four information groups is used for fusion of multiple classifications within character recognition systems. We report on a nationally sponsored character recognition benchmark, with results indicating increased accuracy using the heuristic rules described.
Color Managementsystems have been used for several years in Desktop Publishing (DtP) environments. While this development hasn't matured yet, we are already experiencing the next generation of the color imaging r...
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ISBN:
(纸本)0819417602
Color Managementsystems have been used for several years in Desktop Publishing (DtP) environments. While this development hasn't matured yet, we are already experiencing the next generation of the color imaging revolution-Device Independent Color for the small office/home office (SOHO) environment. though there are still open technical issues with device independent color matching, they are notthe focal point of this paper. this paper discusses two new and crucial aspects in using color management in color documentprocessing: the management of color objects and their associated color rendering methods; a proposal for a precedence order and handshaking protocol among the various software components involved in color documentprocessing. As color peripherals become affordable to the SOHO market, color management also becomes a prerequisite for common document authoring applications such as word processors. the first color management solutions were oriented towards DtP environments whose requirements were largely different. For example, DtP documents are image-centric, as opposed to SOHO documents that are text and charts centric. to achieve optimal reproduction on low-cost SOHO peripherals, it is critical that different color rendering methods are used for the different document objecttypes. the first challenge in using color management of color documentprocessing is the association of rendering methods with objecttypes. As a result of an evolutionary process, color matching solutions are now available as application software, as driver embedded software and as operating system extensions. Consequently, documentprocessing faces a new challenge, the correct selection of the color matching solution while avoiding duplicate color corrections.
We present a range-finding method for determining surface topography by using time modulated structured light illumination. By illuminating a surface with a time-modulated light structure of several transmitters and t...
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ISBN:
(纸本)0819418412
We present a range-finding method for determining surface topography by using time modulated structured light illumination. By illuminating a surface with a time-modulated light structure of several transmitters and triangulating reflected light onto a single point receiver, we are able to determine the surface height at a point by determining which light source intersects the surface atthat point. In essence, the surface height acts to multiplex the projected signals onto the receiver. We increase the system resolution beyond the number of light sources by overlapping the image intensity of the light sources. the resulting signature allows for sub-pixel resolution. time modulating the structured light allows for demodulation with a high signal-to-noise ratio withoutthe use of high intensity light sources thereby reducing system cost and complexity. this method of topographical analysis can be scaled to high end systems capable of real-time, high-resolution imaging. In addition to system geometry and resolution capacity, we discuss the advantages and disadvantages of various modulation and coding schemes that can be applied to this approach.
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