A new hyperspectral image compression algorithm based on bit plane transform is proposed. The main idea of the bit plane transform is to decompose the hyperspectral image into a series of bi-level images which can be ...
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ISBN:
(纸本)0819451819
A new hyperspectral image compression algorithm based on bit plane transform is proposed. The main idea of the bit plane transform is to decompose the hyperspectral image into a series of bi-level images which can be compressed more efficient. The gray code and band sequence optimization techniques are adopted to improve the compression performance in the preprocess stage. The main advantages of the algorithm are low complexity and easy realization.
A new lossless compression based on neural network is given by establishing special mapping Y, integral function and neural network. A high efficiency image compression based on wavelet and neural network is obtained ...
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ISBN:
(纸本)0819451819
A new lossless compression based on neural network is given by establishing special mapping Y, integral function and neural network. A high efficiency image compression based on wavelet and neural network is obtained by embedding in a good wavelet coding system with the new lossless compression. A new image compression based on fractal and neural network is also constructed by embedding in a efficient fractal image compression with the new lossless data compression based on neural network. Experiments show that these compressions are useful and efficient.
Based on analysis of many image change detection methods, a new method of multidimensional change template analysis is proposed in this paper. The new method combines the use of GIS knowledge and the advantages of oth...
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ISBN:
(纸本)0819451819
Based on analysis of many image change detection methods, a new method of multidimensional change template analysis is proposed in this paper. The new method combines the use of GIS knowledge and the advantages of other change detection methods. It has been used to detect change and update image database for the different temporal digital orthophoto maps (DOM). Test results show that this method is effective.
This work investigates the image registration from feature point sets. image registration is a fundamental object recognition method in computer vision and aims to find best matches between two or more point sets when...
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ISBN:
(纸本)0819451819
This work investigates the image registration from feature point sets. image registration is a fundamental object recognition method in computer vision and aims to find best matches between two or more point sets when there are geometric distortions, point measurement errors and contamination present. This paper concentrates on image registration from feature point sets whose transformation is affine or projective and gives closed form solutions of the transformation parameters, respectively. Furthermore, the Random Sample Consensus algorithm is applied to the matching problem in order to yield the transformation, as well as a set of points in correspondence from images directly. The experimental results show that the methods are accurate, stable and are affected slightly by noise.
This paper presents a new filtering algorithm using multi-threshold decomposition filter (MTDF) to solve the contradiction between impulse noise attenuation and image detail-preserving. The algorithm firstly uses Otsu...
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ISBN:
(纸本)0819451819
This paper presents a new filtering algorithm using multi-threshold decomposition filter (MTDF) to solve the contradiction between impulse noise attenuation and image detail-preserving. The algorithm firstly uses Otsu's threshold segmentation (OTS) to segment the image into four parts by steps. Then the matrices of the impulse noise location can be obtained respectively using the threshold decomposition multistage median filter (TDMMF). At last, median filters separately according to the matrices filter the noise pixels in the original image. The results indicate that the method has not only the good ability of de-noising but also better properties in preserving details than median filtering.
In this paper, trademark is regarded as a combination of several geometric regions which have sharp edges. To retrieve such a combination, a method based on its member regions' shape and spatial features is propos...
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ISBN:
(纸本)0819451819
In this paper, trademark is regarded as a combination of several geometric regions which have sharp edges. To retrieve such a combination, a method based on its member regions' shape and spatial features is proposed. Since the way considers the shape feature and spatial relationship at the same time, so it can ensure the consistency in both the local and whole sides. Compared with the method of only using shape feature to retrieve the trademark, the results of experiment show this way has higher precision and the output accords with people's visual feeling better.
作者:
Pan, HXia, LZSE Univ
Dept Automat Control Engn Nanjing 210096 Peoples R China
A set of new invariant moment descriptors-wavelet moment invariants, which combine wavelet multiresolution analysis and moment invariants target recognition method, are proposed in this paper and their invariance also...
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ISBN:
(纸本)0819451819
A set of new invariant moment descriptors-wavelet moment invariants, which combine wavelet multiresolution analysis and moment invariants target recognition method, are proposed in this paper and their invariance also have been proved. Wavelet moment invariants take both advantages of the wavelet inherent property of multiresolution analysis and moment invariants quality of invariant to translation, scaling changes and rotation. Furthermore, studies of the effect of using different wavelet functions and their orders are carried out. Experimental results show that wavelet moment invariants derived from the wavelet function having proper vanishing moments, symmetry and compact support have the best discrimination performance.
In this paper, we analyzed the latest algorithms and technology of multi-band image fusion [6,7], and studied the current stereoscopic display technology [1,4]. While studying the match of dual-channel, dual-band imag...
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ISBN:
(纸本)0819451819
In this paper, we analyzed the latest algorithms and technology of multi-band image fusion [6,7], and studied the current stereoscopic display technology [1,4]. While studying the match of dual-channel, dual-band image, we put forward the idea of dual-channel, dual-band image stereoscopic color fusion. The characteristics of low-light image and near-infrared image were studied, The probability of low-light image and near-infrared image as stereoscopic image-pair was analyzed, and finally realization of stereoscopic color fusion was introduced.
To enhance the tampering localizability of image authentication, a new fragile watermarking scheme, which exploits the perturbation in reverse processing, is proposed. In verifying data integrity, the new method perfo...
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ISBN:
(纸本)0819451819
To enhance the tampering localizability of image authentication, a new fragile watermarking scheme, which exploits the perturbation in reverse processing, is proposed. In verifying data integrity, the new method performs the reverse processing of watermark embedding. Typically, it de-filters the distributed version or equivalently solves an embedding equation. If any tampering happened, the output of the method perturbs because the manipulated data, which can be regarded as the observing error, is drastically enlarged by such processing. The perturbed values indicate the degree of the tampering, and their positions directly draw the shapes of the manipulated areas. Compared with the mostly used block-based methods, the new method localizes the tampering almost pixel-wise instead of block-wise. It also supports the popular adaptive embedding, which does not evenly embed the watermark.
Interfacial Fracture Mechanics is the problem which attracted researchers all of the world as the strength of the composite structure are depended on the mechanical behavior of the interfacial fracture. In the paper, ...
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ISBN:
(纸本)0819451819
Interfacial Fracture Mechanics is the problem which attracted researchers all of the world as the strength of the composite structure are depended on the mechanical behavior of the interfacial fracture. In the paper, the stress field and stress intensity factor of a bi-material beam with crack is obtained by model with initial carrier fringes. In order to obtaining phase value of which is related to the stresses, the Fourier Transform method and frequency shift are applied. It is shown that, using this method, the research of interfacial crack can be more simple, efficient and highly accurate. This technique is very significance for the local three-dimensional effects in dynamic problems of interfacial fracture mechanics.
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