作者:
Ding, MYYan, CHuazhong Univ Sci & Technol
Inst Pattern Recognit & Artificial Intelligence State Educ Commiss Lab Image Proc & Intelligence Wuhan 430074 Peoples R China
A fast 3-D reconstruction of space curve based on quadric segment and matching in trinocular vision is proposed in this paper. First by using the perspective invariance of zero curvature and corner points in curves, c...
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ISBN:
(纸本)0819430064
A fast 3-D reconstruction of space curve based on quadric segment and matching in trinocular vision is proposed in this paper. First by using the perspective invariance of zero curvature and corner points in curves, curves can be segmented into different quadric curves. Then match these segments among three images and reconstruct them respectively. Finally combine ail reconstructed segments together to form continuous curves. The experiments illustrated that the reconstruction speed is higher than those which take points or lines as primitives and duality and a uniqueness solution can be ensured.
This paper presents a novel method to analyze the matching suitability of reference map for mission planning of unmanned aircraft navigated by scene matching. The method is based on the relationship between matching p...
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ISBN:
(纸本)0819430064
This paper presents a novel method to analyze the matching suitability of reference map for mission planning of unmanned aircraft navigated by scene matching. The method is based on the relationship between matching probability of reference map and that of its points. First it estimates the matching probabilities of every point of reference map, then the matching probability of reference map is calculated by summing up these probabilities with weight of probabilities of navigation position distribution. Finally the experimental result is shown to demonstrate the validity of the method.
In this paper, it is firstly pointed out that the raining, as an object in the air, will cause the time spread of radar echo signal. For the pseudo-random code continuous wave(PRC_CW) radar, working with transmitting ...
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ISBN:
(纸本)0819430064
In this paper, it is firstly pointed out that the raining, as an object in the air, will cause the time spread of radar echo signal. For the pseudo-random code continuous wave(PRC_CW) radar, working with transmitting and receiving continuous EM waves, the echo signal at a specified moment will be the superposition of some spread echo signals in a period of time before this specified moment. A superposition algorithm was proposed to calculate the PRC_CW radar signal. Based on the former previous results on the characteristics of rain clutter, the amplitude fluctuation and the spectrum of the echo signal of the PRC_CW radar are investigated with simulation method.
image morphing method, which is based on the pixels positions and color interpolation between two images, has been widely used in image interpolation. Existing morphing methods can not keep 3D shape, even though 2D sh...
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ISBN:
(纸本)0819430064
image morphing method, which is based on the pixels positions and color interpolation between two images, has been widely used in image interpolation. Existing morphing methods can not keep 3D shape, even though 2D shape. In this paper, we put forward a new morphing method. The interpolation image gained by our method is correspondent to certain viewpoint. The method need not predetermine the camera matrix. And it is of simple calculation and easy realization. Our method is practical by the experiments: The interpolation images gained by our method exactly represent the transformation of the view point. from the resource image to the destination image.
We propose a 3D image display system which can present real scenes with realistic motion parallax. In the sensing system, a scene is observed by using a camera matrix. An excellent stereo algorithm SEA which utilizes ...
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ISBN:
(纸本)0819430064
We propose a 3D image display system which can present real scenes with realistic motion parallax. In the sensing system, a scene is observed by using a camera matrix. An excellent stereo algorithm SEA which utilizes 3 x 3 image matrix recovers the depth information of the scene with the density and the sharpness required for high quality image generation. In the display system, following the viewing position of the observer, 2D images with proper motion parallax are generated and presented. A prototype system has been developed and evaluation of the system is examined.
Imaging Spectrometer is a new remote sensing tool. Unlike conventional remote sensing, the Imaging Spectrometer can provide data in narrow, contiguons spectral bands across the solar reflected portion of the electroma...
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ISBN:
(纸本)0819430064
Imaging Spectrometer is a new remote sensing tool. Unlike conventional remote sensing, the Imaging Spectrometer can provide data in narrow, contiguons spectral bands across the solar reflected portion of the electromagnetic spectrum 0.4 um to 2.5 um. Apperance of the Imaging Spectrometer are providing opportunities for acquiring ever - increasing volumes of information as well as making more types of geological information potentially derivable. In order to capture the full range of geological information contained in huge volumes of sea - like data effectly, we have to develop new analytical tool for processing-of hyperspectral remote sensing data. In this paper, authors generalized the basic theory and method of hyperspectral data processing, and pointed out the advantages and deficiencies of the various theoretical models. In addition, a pratical experiment of data processing was conducted to performe the analytical processing technology developed in the paper, A error analysis was reported, some interesting suggestions were given.
"Rainbow Range Finder" is a method for rapidly acquiring 3D information based on spectral analysis. It uses a special light with continuous spectrum to project across the objects, and its image will present ...
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ISBN:
(纸本)0819430064
"Rainbow Range Finder" is a method for rapidly acquiring 3D information based on spectral analysis. It uses a special light with continuous spectrum to project across the objects, and its image will present the regular change of colors. One color forms a line in the color image and responds to a light plane structured by a wave band in the spectrum. When all the light planes are calibrated and the camera model is known, we can calculate 3D coordinates of all image points in the scene. This paper mainly discusses the light plane calibration and color classification techniques for implementation of these methods.
Acquiring 3-D color model of human head is desired in many applications. in this paper, we introduce a scheme to obtain 3-D color information of human head from image sequence in 3-D laser color scanner. Structured li...
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ISBN:
(纸本)0819430064
Acquiring 3-D color model of human head is desired in many applications. in this paper, we introduce a scheme to obtain 3-D color information of human head from image sequence in 3-D laser color scanner. Structured light technology is employed to measure depth. We study the relationship among the object's images in different position. Synthesizing these information, we can obtain the shape of hair area from contour image. True color information of sample points can be acquired from the specified image in image sequence. The result of experiment is satisfactory.
3D route planning is a challenge problem due to its huge computational cost burden. There are many algorithms about route planning such as A* and dynamic programming. But these algorithms are planned only from 2D plus...
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ISBN:
(纸本)0819430064
3D route planning is a challenge problem due to its huge computational cost burden. There are many algorithms about route planning such as A* and dynamic programming. But these algorithms are planned only from 2D plus 1D, instead of 3D directly. Generally, they first search a 2D optimal route in the ground, then plan their altitudes in a vertical profile determined by 2D route planning. In this paper a 3D route planning method based on GA(genetic algorithm) is proposed to select a 3D route directly. Through the experiments with a natural 3D terrain map, it is concluded that the route planned by this Algorithm is satisfactory.
There are many approaches about 3D route planning such as A*, potential field, dynamic programming. All of them plan the route only in the way of space route planning. As well known, the shape of 3D terrain is one of ...
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ISBN:
(纸本)0819430064
There are many approaches about 3D route planning such as A*, potential field, dynamic programming. All of them plan the route only in the way of space route planning. As well known, the shape of 3D terrain is one of intricate features in nature. Is there a relationship between flight route and 3D terrain? In this paper, we concentrately reveal this relationship and attempt to apply it to route planning, presenting a new approach of 3D route planning. Through the experiments in a natural 3D terrain map, it is concluded that this approach is efficient and very fast.
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