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2003 Vol. 25, No. 12
Display Method:
2003, 25(12): 1585-1590.
Abstract:
This paper describes how to combine PCNN(Pulse Coupled Neural Network) with fuzzy algorithm to reduce the noise of four-level images. Meanwhile, the image noise-reduciug algorithm based on the fuzzy PCNN is brought forward. The results of computer si...
This paper describes how to combine PCNN(Pulse Coupled Neural Network) with fuzzy algorithm to reduce the noise of four-level images. Meanwhile, the image noise-reduciug algorithm based on the fuzzy PCNN is brought forward. The results of computer si...
2003, 25(12): 1591-1597.
Abstract:
In this paper, a novel image retrieval algorithm based on feature element is proposed. Compared with feature vectors, feature elements tend to represent visual meanings of the image according to subjective perception of human beings. Based on feature...
In this paper, a novel image retrieval algorithm based on feature element is proposed. Compared with feature vectors, feature elements tend to represent visual meanings of the image according to subjective perception of human beings. Based on feature...
2003, 25(12): 1598-1602.
Abstract:
In this paper, a new method of image compare search engine for fractal coding is proposed, namely using image topology characteristic of Iterative Function System (IFS) and applying to image deposit and retrieval. However, the image produces a lot of...
In this paper, a new method of image compare search engine for fractal coding is proposed, namely using image topology characteristic of Iterative Function System (IFS) and applying to image deposit and retrieval. However, the image produces a lot of...
2003, 25(12): 1603-1611.
Abstract:
This paper introduces a new multiresolution image recognition method. At first, it makes multi-wavelet division over the image, organizes the corresponding components of different resolution into a vector. Then, makes a Fisher transform over the vect...
This paper introduces a new multiresolution image recognition method. At first, it makes multi-wavelet division over the image, organizes the corresponding components of different resolution into a vector. Then, makes a Fisher transform over the vect...
2003, 25(12): 1612-1616.
Abstract:
A digital watermarking sharing algorithm based on vector secret sharing scheme is presented, which applies the thought of vector sharing to digital watermarking. The algorithm disturbs both the original watermark and the sharing block watermark befor...
A digital watermarking sharing algorithm based on vector secret sharing scheme is presented, which applies the thought of vector sharing to digital watermarking. The algorithm disturbs both the original watermark and the sharing block watermark befor...
2003, 25(12): 1617-1621.
Abstract:
A new semi-blinding watermarking algorithm in wavelet domain is proposed in this paper. The original image is first decomposed in wavelet domain, then the feature points are extracted from the lowest approximation with the scale interaction model for...
A new semi-blinding watermarking algorithm in wavelet domain is proposed in this paper. The original image is first decomposed in wavelet domain, then the feature points are extracted from the lowest approximation with the scale interaction model for...
2003, 25(12): 1622-1627.
Abstract:
SAR/ISAR image processing involves a 2D Fourier transform that produce high intensity sidelobes which obscure low intensity scatters in the image. Although sidolobitt can be reduced using parametric windows, the image resolution becomes worse. Apodiz...
SAR/ISAR image processing involves a 2D Fourier transform that produce high intensity sidelobes which obscure low intensity scatters in the image. Although sidolobitt can be reduced using parametric windows, the image resolution becomes worse. Apodiz...
2003, 25(12): 1628-1633.
Abstract:
NMTI is a noncoherent method to detect moving target through relative range displacement between sequent radar echo signals. It can be used in wideband radar systems for moving target detection and clutter suppression effectively. In this paper, idea...
NMTI is a noncoherent method to detect moving target through relative range displacement between sequent radar echo signals. It can be used in wideband radar systems for moving target detection and clutter suppression effectively. In this paper, idea...
2003, 25(12): 1634-1640.
Abstract:
The theory and method of designing radar signal with MAC-sequence-code are systematically studied in this paper. Both theoretic analysis and simulation results show that MAC-sequence is a binary sequence with ideal correlation property and ability of...
The theory and method of designing radar signal with MAC-sequence-code are systematically studied in this paper. Both theoretic analysis and simulation results show that MAC-sequence is a binary sequence with ideal correlation property and ability of...
2003, 25(12): 1641-1646.
Abstract:
Based on range migration imaging technique, this paper investigates ground penetrating radar three dimension imaging algorithm under near field condition, discusses the back propagation algorithm at the same time. Theoretical analysis shows that near...
Based on range migration imaging technique, this paper investigates ground penetrating radar three dimension imaging algorithm under near field condition, discusses the back propagation algorithm at the same time. Theoretical analysis shows that near...
2003, 25(12): 1647-1652.
Abstract:
An algorithm of caption detection in news video is proposed in this paper. It makes use of space and time characters of the captions appearing in the video. On the basis of shot boundary detection, this method applies morphological operation and diff...
An algorithm of caption detection in news video is proposed in this paper. It makes use of space and time characters of the captions appearing in the video. On the basis of shot boundary detection, this method applies morphological operation and diff...
2003, 25(12): 1653-1657.
Abstract:
In order to improve the ability of chaotic system detecting weak periodic pulse signals, this paper proposes the detecting scheme uniting sampling integral with chaotic sys-tem. The simulation results indicate that the united detecting scheme precede...
In order to improve the ability of chaotic system detecting weak periodic pulse signals, this paper proposes the detecting scheme uniting sampling integral with chaotic sys-tem. The simulation results indicate that the united detecting scheme precede...
2003, 25(12): 1658-1663.
Abstract:
This paper presents a detailed method on constructing multi-scaling functions with fractal interpolation functions, then calculates that det H0(z) and det H0(-z) have no common roots, and obtains F0(z) the dual low pass multi-filter of H0(Z) with the...
This paper presents a detailed method on constructing multi-scaling functions with fractal interpolation functions, then calculates that det H0(z) and det H0(-z) have no common roots, and obtains F0(z) the dual low pass multi-filter of H0(Z) with the...
A New Method for Mitigating the Effect of NLOS Propagation in the TOA and AOA Hybrid Location System
2003, 25(12): 1664-1668.
Abstract:
Based on the relationship between the errors of the Circular Lines of Position (LOPs) and the straight LOPs and that of the measured parameters, a hybrid locating system in which the Time Of Arrival (TOA) and the Angle Of Arrival (AOA) measured by th...
Based on the relationship between the errors of the Circular Lines of Position (LOPs) and the straight LOPs and that of the measured parameters, a hybrid locating system in which the Time Of Arrival (TOA) and the Angle Of Arrival (AOA) measured by th...
2003, 25(12): 1669-1675.
Abstract:
Forward link packet data service scheduling algorithm is extensively researched and it is indicated that there is an exclusive relationship between the data throughput and fairness. Under certain fairness criteria, the closer the data throughput cumu...
Forward link packet data service scheduling algorithm is extensively researched and it is indicated that there is an exclusive relationship between the data throughput and fairness. Under certain fairness criteria, the closer the data throughput cumu...
2003, 25(12): 1676-1681.
Abstract:
According to the characteristics of Assured Forwarding (AF) aggregated flows of Differentiated Services(DiffServ), a new scheduling algorithm, named Fair Weighted Round Robin(FWRR) is proposed. FWRR is a work-conserving round robin scheduling algorit...
According to the characteristics of Assured Forwarding (AF) aggregated flows of Differentiated Services(DiffServ), a new scheduling algorithm, named Fair Weighted Round Robin(FWRR) is proposed. FWRR is a work-conserving round robin scheduling algorit...
2003, 25(12): 1682-1687.
Abstract:
An implementation of the Model Based Parameter Estimation(MBPE) tech-nique is presented for obtaining the RCS frequency response of arbitrarily shaped Perfect Electric Conductor (PEC) bodies. The electric current is expanded in a Taylor series or Pad...
An implementation of the Model Based Parameter Estimation(MBPE) tech-nique is presented for obtaining the RCS frequency response of arbitrarily shaped Perfect Electric Conductor (PEC) bodies. The electric current is expanded in a Taylor series or Pad...
2003, 25(12): 1688-1694.
Abstract:
A simulated computation method is developed by theoretical analysis and de-duction to compute the gap impedance varying with frequency of output cavity loaded with a filter. Meanwhile, a practical example is used to show that how to compute the frequ...
A simulated computation method is developed by theoretical analysis and de-duction to compute the gap impedance varying with frequency of output cavity loaded with a filter. Meanwhile, a practical example is used to show that how to compute the frequ...
2003, 25(12): 1703-1708.
Abstract:
After analyzing several abuses of transporting data service in existing WCDMA system, this paper presents a UL power control algorithm and relevant QoS guarantee. The new algorithm utilized some characteristic of data services, such as its controllab...
After analyzing several abuses of transporting data service in existing WCDMA system, this paper presents a UL power control algorithm and relevant QoS guarantee. The new algorithm utilized some characteristic of data services, such as its controllab...
2003, 25(12): 1709-1713.
Abstract:
In order to support cooperative work in enterprise environment, voice tool should provide flexible floor control mode. Because mixed audio is not clear in existing voice tools, they have freezing floor control mode only where members talk by turns wh...
In order to support cooperative work in enterprise environment, voice tool should provide flexible floor control mode. Because mixed audio is not clear in existing voice tools, they have freezing floor control mode only where members talk by turns wh...
2003, 25(12): 1714-1719.
Abstract:
The Sarabandis Calibration Algorithm(SCA) using distributed targets is modified in the paper. Then the calibration experiment with the Modified Sarabandis Calibration Algorithm(MSCA) is carried out, using the uncalibrated image data and calibrated im...
The Sarabandis Calibration Algorithm(SCA) using distributed targets is modified in the paper. Then the calibration experiment with the Modified Sarabandis Calibration Algorithm(MSCA) is carried out, using the uncalibrated image data and calibrated im...
2003, 25(12): 1720-1724.
Abstract:
Due to the circuit topology of EPC used in spaceborne TWT amplifier, its harmonic has complex spectrum and great effect on reliability. In this paper, the modulation theory is applied to analyze the cause and calculate the spectrum of harmonic of EPC...
Due to the circuit topology of EPC used in spaceborne TWT amplifier, its harmonic has complex spectrum and great effect on reliability. In this paper, the modulation theory is applied to analyze the cause and calculate the spectrum of harmonic of EPC...
2003, 25(12): 1725-1728.
Abstract:
A methodology to realize continuous-time current-mode filters using low-voltage Multi-output Current-mode Differential Integrator (MCDI) is presented. At first, the char-acteristics of MCDI and the proposed filters which employ MCDI are analyzed and ...
A methodology to realize continuous-time current-mode filters using low-voltage Multi-output Current-mode Differential Integrator (MCDI) is presented. At first, the char-acteristics of MCDI and the proposed filters which employ MCDI are analyzed and ...
2003, 25(12): 1695-1702.
Abstract:
A novel Generalized MultiCarrier CDMA (GMC CDMA) transmission scheme has been proposed recently. With a block-wise transmission and spreading, GMC CDMA has been proven to be able to eliminate intersymbol interference and multiuser interference, while...
A novel Generalized MultiCarrier CDMA (GMC CDMA) transmission scheme has been proposed recently. With a block-wise transmission and spreading, GMC CDMA has been proven to be able to eliminate intersymbol interference and multiuser interference, while...
