We present a method that enhances the performance of depth-from-defocus (DFD) through the use of shading information. DFD suffers from important limitations -namely coarse shape reconstruction and poor accuracy on tex...
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ISBN:
(纸本)9781467364102
We present a method that enhances the performance of depth-from-defocus (DFD) through the use of shading information. DFD suffers from important limitations -namely coarse shape reconstruction and poor accuracy on textureless surfaces - that can be overcome with the help of shading. We integrate both forms of data within a Bayesian framework that capitalizes on their relative strengths. Shading data, however, is challenging to recover accurately from surfaces that contain texture. To address this issue, we propose an iterative technique that utilizes depth information to improve shading estimation, which in turn is used to elevate depth estimation in the presence of textures. With this approach, we demonstrate improvements over existing DFD techniques, as well as effective shape reconstruction of textureless surfaces.
With the increasingly rapid pace of life in today, mobile devices become more and more popular for people, so the development of a cost-effective information management software has good prospects for development on t...
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With the increasingly rapid pace of life in today, mobile devices become more and more popular for people, so the development of a cost-effective information management software has good prospects for development on the Android platform, database design as the basic work it is also particularly important, this paper studied the database design of music information management software, firstly, studied the requirements analysis of music information management software, with data flow diagram describe the course of its operation;Secondly, studied the database design;finally, studied the software security design of music information management software. database design is good or bad, which directly affects the efficiency of the application and results, therefore, database design of music information management software based on Android platform studied in this paper has great significance for the development of software.
In this paper we propose a novel depth measurement method by fusing depth from defocus (DFD) and stereo. One of the problems of passive stereo method is the difficulty of finding correct correspondence between images ...
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ISBN:
(纸本)9781467364102
In this paper we propose a novel depth measurement method by fusing depth from defocus (DFD) and stereo. One of the problems of passive stereo method is the difficulty of finding correct correspondence between images when an object has a repetitive pattern or edges parallel to the epipolar line. On the other hand, the accuracy of DFD method is inherently limited by the effective diameter of the lens. Therefore, we propose the fusion of stereo method and DFD by giving different focus distances for left and right cameras of a stereo camera with coded apertures. Two types of depth cues, defocus and disparity, are naturally integrated by the magnification and phase shift of a single point spread function (PSF) per camera. In this paper we give the proof of the proportional relationship between the diameter of defocus and disparity which makes the calibration easy. We also show the outstanding performance of our method which has both advantages of two depth cues through simulation and actual experiments.
After the completion of Beijing New Airport,air-rail intermodality will become an important means of internal and external links in Jing-Jin-Ji ***-Jin-Ji Air-Rail Intermodality System is built and 7 sub-systems are d...
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After the completion of Beijing New Airport,air-rail intermodality will become an important means of internal and external links in Jing-Jin-Ji ***-Jin-Ji Air-Rail Intermodality System is built and 7 sub-systems are divided based on user demand *** to the passenger process,the business process of the system is planned and the sub-systems are described using dataflow *** system provides theoretical support for the development of air-rail intermodal in Jing-Jin-Ji region.
With the development of modern information technology and the extensive application in the area of teaching in schools, it has become an important direction through an extensive network of resources for the teaching o...
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With the development of modern information technology and the extensive application in the area of teaching in schools, it has become an important direction through an extensive network of resources for the teaching of modern education reform. Computer software engineering has been increasingly used in various fields. Software engineering design methods has been used in this paper, Sports Management System has been pre-designed on the basis of application of software engineering theory and method, Under this premise, the actual management of sports and system software have been developed. The design of data flow diagram was clear and reasonable, which has played an important role in software development. It has been proved that a practical system has been perfect created with efficiency design, fully functional form, rational and affordable design.
This paper proposes a method for knowledge acquisition,visualizing and analysis which is combined by data flow diagram(BFD),and entity-relationships diagram(ERD).The knowledge acquisition from an expert or specialist ...
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This paper proposes a method for knowledge acquisition,visualizing and analysis which is combined by data flow diagram(BFD),and entity-relationships diagram(ERD).The knowledge acquisition from an expert or specialist uses a video recorder and interview skill *** visualization is effective for information sharing among working place as well as for idea *** analysis aims to clarify a structure of decision making from the viewpoints of input, output and *** method developed is applied to Japanese manufacturer which produces electronic *** company had only a partial portion of the manual for its production planning procedure. Finally the manual for production planning procedure has been developed which could inform us a future problem to improve productivity of the *** have found this knowledge extracting or externalizing and expressing or describing methods can be applied to various processes of which detail procedures exist only in the knowledge of the planning expert.
Network teaching is to use computer equipment and Internet technology in the virtual space, through a certain method to implement the teaching method on the network, the perfection of the network teaching system can d...
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ISBN:
(纸本)9781510819023
Network teaching is to use computer equipment and Internet technology in the virtual space, through a certain method to implement the teaching method on the network, the perfection of the network teaching system can directly replace the traditional teaching method in the whole process of teaching. In order to solve the problem of system development, this paper carries out the demand analysis. First, the use of dataflow graph technology, depicting information flow and data from the input to the output of the process of transformation;and then, the use of data dictionary technology, defining the relevant elements of the data flow diagram;finally, the use of tree structure diagram is represented by the administrator subsystem, teacher subsystem and student subsystem structure of the system. The requirement analysis system design the bridge of analysis and software, has laid a foundation for the system development.
Traditional Depth from Defocus (DFD) has not considered optical path deviation, called as optical diffraction, which results in blurring imaging in an optical system, and solution of the global DFD can not avoid itera...
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ISBN:
(纸本)9781479987313
Traditional Depth from Defocus (DFD) has not considered optical path deviation, called as optical diffraction, which results in blurring imaging in an optical system, and solution of the global DFD can not avoid iterative optimization, thus causing the calculation task to be much huge. In order to improve the resolution and efficiency of traditional DFD, a fast and accurate depth reconstruction method with a defocus model based on a single vision sensor was proposed in this paper. A defocus imaging model with optical diffraction is developed through curve fitting of a numerical model, taking into account relative blurring and heat diffusion, to improve the resolution of depth reconstruction. Furthermore, a relationship between blurring degree and defocus parameter was constructed to reduce the running time of depth reconstruction. Both static experiment and dynamic experiments were conducted with respect to the real images of different AFM cantilevers, respectively, and the results were analyzed to show the feasibility and effectiveness of the proposed method.
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