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2001 Vol. 23, No. 7
Display Method:
2001, 23(7): 625-630.
Abstract:
The high frequency part of wavelet transform reflects the detail of edges. And median filter is a kind of nonlinear stack filter, it has good abilities in keeping edge and filtering clutter. Based on the analysis of the characteristics of the images ...
The high frequency part of wavelet transform reflects the detail of edges. And median filter is a kind of nonlinear stack filter, it has good abilities in keeping edge and filtering clutter. Based on the analysis of the characteristics of the images ...
2001, 23(7): 631-636.
Abstract:
In this paper, the question of the parameter choice of RDM (reflectivity displacement method) for the radar system that has a narrow azimuth antenna beam is discussed and the important factors that determine the choice of the parameters are proposed....
In this paper, the question of the parameter choice of RDM (reflectivity displacement method) for the radar system that has a narrow azimuth antenna beam is discussed and the important factors that determine the choice of the parameters are proposed....
2001, 23(7): 637-643.
Abstract:
Base on the analysis of SAR linear FM waveform and Doppler history, a modified spaceborne SAR quicklook algorithm is proposed, the algorithm s mathematical model is also constructed. Then a method of how to mosaic the sub-image together is given by a...
Base on the analysis of SAR linear FM waveform and Doppler history, a modified spaceborne SAR quicklook algorithm is proposed, the algorithm s mathematical model is also constructed. Then a method of how to mosaic the sub-image together is given by a...
2001, 23(7): 644-649.
Abstract:
In order to save the computational time of the image correlation matching, genetic algorithm is imported. Both binary coding and natural number coding genetic algorithms are implemented for correlation matching respectively. The results show that nat...
In order to save the computational time of the image correlation matching, genetic algorithm is imported. Both binary coding and natural number coding genetic algorithms are implemented for correlation matching respectively. The results show that nat...
2001, 23(7): 650-656.
Abstract:
Based on digital image processing and analysis, and computer graphics, a task of rebuilding and exhibiting unearthed relics models in three dimensions has been studied by vising 3D modeling software and 2D digital image processing software in this pa...
Based on digital image processing and analysis, and computer graphics, a task of rebuilding and exhibiting unearthed relics models in three dimensions has been studied by vising 3D modeling software and 2D digital image processing software in this pa...
2001, 23(7): 657-662.
Abstract:
The new video coding standard MPEG4 is enabling content-based functionality. It decomposes sequences into video object planes (VOPs) so that each VOP represents one moving object. This paper presents a new automatic video sequence segmentation algori...
The new video coding standard MPEG4 is enabling content-based functionality. It decomposes sequences into video object planes (VOPs) so that each VOP represents one moving object. This paper presents a new automatic video sequence segmentation algori...
2001, 23(7): 663-668.
Abstract:
In this paper, a modified scheme for small memories and low-power image and video coding is presented. It is based on vector quantization. In 1998, K. Masselos uses a small codebook, and by using simple but efficient transformations to the codewords ...
In this paper, a modified scheme for small memories and low-power image and video coding is presented. It is based on vector quantization. In 1998, K. Masselos uses a small codebook, and by using simple but efficient transformations to the codewords ...
2001, 23(7): 669-676.
Abstract:
This paper analyses various objective measures for the prediction of subjective quality of speech. A new Perception-based Bark Spectral Distortion (PBSD) parameter is pre- sented, which takes the masking property of human ear into consideration, to p...
This paper analyses various objective measures for the prediction of subjective quality of speech. A new Perception-based Bark Spectral Distortion (PBSD) parameter is pre- sented, which takes the masking property of human ear into consideration, to p...
2001, 23(7): 677-686.
Abstract:
The eigenvector of n-cube graph is found and then a kind of Hopfield networks with n-cube as its structure and connection situation, called n-cube network, are analysed theoretically for the attractions states/cycles and their distribution in the sta...
The eigenvector of n-cube graph is found and then a kind of Hopfield networks with n-cube as its structure and connection situation, called n-cube network, are analysed theoretically for the attractions states/cycles and their distribution in the sta...
2001, 23(7): 687-692.
Abstract:
In this paper, a neural network with strong kernel and continuously time delay is mainly investigated. A switch from stability to instability may occur for certain range of the parameters arid must then be followed by a switch back to stability. Bifu...
In this paper, a neural network with strong kernel and continuously time delay is mainly investigated. A switch from stability to instability may occur for certain range of the parameters arid must then be followed by a switch back to stability. Bifu...
2001, 23(7): 693-699.
Abstract:
The multiwavelet research has been an important aspect of the wavelet theory in recent years. This paper summarizes some important properties of multiwavelets. Using the properties of orthogonality and symmetry, A multiwavelet with compact support in...
The multiwavelet research has been an important aspect of the wavelet theory in recent years. This paper summarizes some important properties of multiwavelets. Using the properties of orthogonality and symmetry, A multiwavelet with compact support in...
2001, 23(7): 700-704.
Abstract:
The sidelobe level is an important factor in designing of antenna arrays, and several methods have been developed to improve it. A model of unequally spaced thinned array is given in this paper, which introduces a distance perturbation into the eleme...
The sidelobe level is an important factor in designing of antenna arrays, and several methods have been developed to improve it. A model of unequally spaced thinned array is given in this paper, which introduces a distance perturbation into the eleme...
2001, 23(7): 712-715.
Abstract:
Image lossless compression plays an important role in the remote sensing field. A new lossless coding algorithm based on perceptron is studied in this paper. The prediction coefficients can be adaptively adjusted by this model. Consequently both spac...
Image lossless compression plays an important role in the remote sensing field. A new lossless coding algorithm based on perceptron is studied in this paper. The prediction coefficients can be adaptively adjusted by this model. Consequently both spac...
2001, 23(7): 716-721.
Abstract:
A novel variable-rate correlation vector quantizer is presented for image encoding in this paper. Before encoding, four characteristic values of each codeword are computed, then four corresponding sorted codebooks are obtained according to the ascend...
A novel variable-rate correlation vector quantizer is presented for image encoding in this paper. Before encoding, four characteristic values of each codeword are computed, then four corresponding sorted codebooks are obtained according to the ascend...
2001, 23(7): 722-725.
Abstract:
Due to the complexity of automatic target recognition for aerial photo this paper describes an automatic target recognition algorithm based on neural network. It includes two stages, target detection and false-alarm rejection. The first stage operate...
Due to the complexity of automatic target recognition for aerial photo this paper describes an automatic target recognition algorithm based on neural network. It includes two stages, target detection and false-alarm rejection. The first stage operate...
2001, 23(7): 726-728.
Abstract:
The research status of phosphor for FEDs is summarily described. Some key questions are reviewed in details. The CL performance of our newly developed phosphor are reported.
The research status of phosphor for FEDs is summarily described. Some key questions are reviewed in details. The CL performance of our newly developed phosphor are reported.
2001, 23(7): 705-711.
Abstract:
Digital watermarking is a technique, which protects digital product copyright and does not appear until two years ago. And its goal is to protect legal copy and distribution of digital product, it has been the hotspot of international academia. Digit...
Digital watermarking is a technique, which protects digital product copyright and does not appear until two years ago. And its goal is to protect legal copy and distribution of digital product, it has been the hotspot of international academia. Digit...
