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11. 发明专利

JPS6165366A Synthetic apperture radar picture reproducing processing system 失效
标题翻译：合成纸雷达图像再现处理系统
公开(公告)号：JPS6165366A
公开(公告)日：1986-04-03
申请号：JP18631784
申请日：1984-09-07
申请人： Hitachi Ltd
发明人： MAEDA AKIRA , TSUBOI AKIRA , FURUMURA FUMINOBU
IPC分类号： G01S13/90 , G06T1/00
CPC分类号： G01S13/9011
摘要： PURPOSE: To decrease the arithmetic quantity of a synthetic apperture radar reproducing processing and to reproduce the synthetic apperture radar picture of a sharp picture by generating a dotted pattern and omitting FFT once by several lines.
CONSTITUTION: For azimuth compression, a the synthetic apperture radar (SAR) picture reproducing processing, a fast Fourier conversion (FFT) 51 is executed to observation data after a range is compressed, which are converted to a frequency area and a range curvature correction 52 is executed. When a dotted pattern is generated only once every 16 lines and dotted image pattern generation is judged to be necessary, a dotted image pattern regenerating processing 54 and the FFT55 are executed, and in other cases the data regenerated earlier are used, a complex number multiplication 56 is executed and a phase rotating factor to correct position dislocation and phase dislocation is multiplied to the result of the processing 56. finally, IFFT 58 is executed and azimuth compression results are obtained.
COPYRIGHT: (C)1986,JPO&Japio
摘要翻译：目的：减少合成光圈雷达再现处理的运算量，并通过生成点阵图形再次清除锐利图像的合成孔径雷达图像，并通过几行省略FFT。构成：对于方位压缩，对压缩范围后的观测数据执行合成光圈雷达（SAR）图像再现处理，快速傅里叶变换（FFT）51，其被转换为频率区域和范围曲率校正52 被执行。当每16行生成一个虚线图案并且判断需要点图像图案生成时，执行点图像图案再现处理54和FFT55，并且在其他情况下使用先前再生的数据，复数乘法 56，并且将相位旋转因子校正位置错位和相位错位与处理结果56相乘。最后，执行IFFT 58并获得方位压缩结果。

12. 发明专利

JPS6113372A Focussing system of synthetic-aperture radar image 失效
标题翻译：合成孔径雷达图像聚焦系统
公开(公告)号：JPS6113372A
公开(公告)日：1986-01-21
申请号：JP13315484
申请日：1984-06-29
申请人： Hitachi Ltd
发明人： MAEDA AKIRA , TSUBOI AKIRA , FURUMURA FUMINOBU
IPC分类号： G06T1/00 , G01S13/90
CPC分类号： G01S13/9011
摘要： PURPOSE:To quickly obtain well-focussed high-quality synthetic-aperture radar images, by finding real Doppler changing ratios on the basis of the distance between effective center frequencies, positional deviating quantity between look image data, and initial Doppler changing ratio. CONSTITUTION:A two-look image correlation counting means 15 counts the correlation between two partial images by shifting the positions of two images one picture element by one picture element and outputs a positionally deviating quantity and correlation value to a maximum correlation position searching means 16, and thus, the positionally deviated quantity (d) which gives the maximum correlation value is found. Moreover, the output of a range coverture correcting means 7 is sent to a power spectrum calculating means 20 and the intensity distribution in the frequency area is calculated. A look effective center frequency calculating means 21 finds the effective center frequency of each look from the intensity distribution and calculates the distance lE between the effective center frequencies. A Doppler changing ratio correcting means 17 finds a real Doppler changing ratio Ka from the positionally deviating quantity (d), distance lE between the two look effective center frequencies, and initial Doppler changing ratio K'a and performs azimuth-compressing processes on all image data by using this value Ka.
摘要翻译：目的：通过基于有效中心频率之间的距离，外观图像数据之间的位置偏移量和初始多普勒变化率找到实际的多普勒变化比，快速获得高质量的合成孔径雷达图像。构成：双面图像相关计数装置15通过将两个图像的位置一个像素移位一个像素来对两个部分图像之间的相关性进行计数，并将位置偏移量和相关值输出到最大相关位置搜索装置16，因此，找到给出最大相关值的位置偏离量（d）。此外，距离覆盖校正装置7的输出被发送到功率谱计算装置20，并且计算频率区域中的强度分布。看有效中心频率计算装置21根据强度分布求出每个外观的有效中心频率，并计算有效中心频率之间的距离lE。多普勒变化率校正装置17根据位置偏差量（d），两个有效中心频率之间的距离lE和初始多普勒变化率K'a找到实际多普勒变化比Ka，并对所有图像执行方位压缩处理数据通过使用这个值Ka。

13. 发明专利

JPS6113370A System for eliminating out-of-focus of synthetic-aperture radar in distance direction 失效
标题翻译：用于消除距离方向合成孔径雷达不合格的系统
公开(公告)号：JPS6113370A
公开(公告)日：1986-01-21
申请号：JP13315284
申请日：1984-06-29
申请人： Hitachi Ltd
发明人： TSUBOI AKIRA , MAEDA AKIRA , FURUMURA FUMINOBU
IPC分类号： G01S13/90
CPC分类号： G01S13/9011
摘要： PURPOSE:To eliminate the out-of-focus condition of a reproduced picture in the direction of distance resulting from a rangewalk geometrical distortion contained in received signals of a synthetic-aperture radar, by performing convolutional integration of interpolatory kernel in the direction of distance when the distance is compressed. CONSTITUTION:When the out of focus at a distance (d) is eliminated, the out of focus in a specific path dc is eliminated by means of a distance compressing section 5 by using the data of a received signal file 1 and the parameter of the specific distance dc. Then a parameter precisely-estimating section 6 analyzes the power spectrum and phase of this output in the direction of azimuth and corrects a Doppler FM ratio (KD) and Doppler frequency (fD) which are the output of a parameter roughly-estimating section 3 at the distance dc. An interpolatory function (interpolatory kernel WCt) is found from the corrected values and the parameter value at the specific distance dc. The distance-compressed signal is Fourier-transformed in the direction of azimuth by an azimuth compressing section 8 and subjected to azimuth compression after it is resampled by means of the interpolatory function and geometrical distortion is removed.
摘要翻译：目的：为了消除复合图像在合成孔径雷达的接收信号中包含的几何失真导致的距离方向的离焦条件，通过在距离方向上执行内插核的卷积积分距离被压缩。构成：当消除距离（d）的焦点时，通过使用接收信号文件1的数据和通过距离压缩部分5的参数来消除特定路径dc中的焦点偏离特定距离直流然后，参数精确估计部分6在方位方向上分析该输出的功率谱和相位，并且校正作为大致估计部分3的参数的输出的多普勒FM比（KD）和多普勒频率（fD）距离直流根据校正值和特定距离dc处的参数值发现插值函数（插值核WCt）。距离压缩信号通过方位压缩部分8在方位方向上被傅里叶变换，并且在通过内插函数重采样之后进行方位压缩，并且去除了几何失真。

14. 发明专利

JPS60252289A SYSTEM FOR SUPPRESSING BLUR OR RANGE DIRECTION IN SYNTHETIC APERTURE RADAR 失效
公开(公告)号：JPS60252289A
公开(公告)日：1985-12-12
申请号：JP10835584
申请日：1984-05-30
申请人： HITACHI LTD
发明人： TSUBOI AKIRA , MAEDA AKIRA , FURUMURA FUMINOBU
IPC分类号： G01S13/90
摘要： PURPOSE:To suppress the range direction blur more easily by attaining an effect similar to a blur restoring function with correction of a chirp FM rate. CONSTITUTION:In a range walk estimating part 1, a Doppler FM rate KD at the center point of the scene of an observation object earth's surface is obtained and a center frequency fD of the Doppler frequency band is obtained on the basis of data in a file. In a chirp FM rate correcting part 6, a chirp FM rate KR' of a reference function for range compression in the case, where restoration of the range direction blur is taken into consideration in accordance with a prescribed formula, is claculated. A generating part 3 of the reference function for range compression uses the chirp FM rate KR' to generate the reference function for range compression. Thus, the occurrence of the range direction blur on a reproduced picture due to a geometrical distortion called range walk is suppressed in the initial stage of the signal processing. Consequently, the flow of the synthetic aperture radar signal processing is simplified because it is unnecessary to generate the restoring function of the range direction blur.

15. 发明专利

JPS60246484A DIGITAL PICTURE PROCESSOR 失效
公开(公告)号：JPS60246484A
公开(公告)日：1985-12-06
申请号：JP23150084
申请日：1984-11-02
申请人： HITACHI LTD
发明人： HONMA KOUICHI , TSUBOI AKIRA , FURUMURA FUMINOBU , IHARA KOUICHI
IPC分类号： G06T3/00 , G06T1/00
摘要： PURPOSE:To execute exactly a correction even in case of a scan picture having an overlap and an underlap by weighting input picture data with respect to not only the corresponding one picture element but also the related peripheral picture element, and writing the picture data. CONSTITUTION:The product of a picture intensity to which a weight corresponding to a coordinate and each distributed relative coordinate has been inputted is caught and added into a storage device 14. Also, in a storage device 15, a value from a device 12 for generating a prescribed value 1 instead of an actual picture data is written in the actual picture data. Subsequently, the storage device 14 is brought to raster scanning by an address generating device 17, the converted data is read out, normalized in a divider 17 by a corresponding value of the storage device 15, and an influence of overlap scanning is eliminated. Also, as for an area which has not been scanned, no picture is written in the storage devices 14, 15, existing data is embedded.

16. 发明专利

JPS5831478A FINGERPRINT COLLATING DEVICE 失效
公开(公告)号：JPS5831478A
公开(公告)日：1983-02-24
申请号：JP12876481
申请日：1981-08-19
申请人： HITACHI LTD
发明人： HONMA KOUICHI , TSUBOI AKIRA , IHARA KOUICHI , HAYASHI TAKANARI , SHIONO SHIGEO
IPC分类号： G06T7/00 , G06K9/00
摘要： PURPOSE:To easily detect an illegal fingerprint, and to prevent its forgery, by deforming and processing an already registered fingerprint picture of a person to be tested, and a collating inputted fingerprint picture, positioning them, and collating them. CONSTITUTION:When a person to be tested inserts a card 1 on which his own intrinsic ID number has been entered, into a reader 2, a fingerprint file retrieving device 3 retrives a fingerprint picture registered in advance from a fingerprint file 4, and transfers it to a picture memory 5. Subsequently, the person to be tested inputs his own fingerprint 6 by a camera 7, A/D-converts it and inputs it to a picture memory 10. 2 Pictures stored in the memories 5, 10 are deformed and processed 12, respectively, and are displayed on a CRT 11. The person to be tested watches the CRT 11 and adjusts a position of the finger so that 2 pictures are in coincidence. During this time, the input from the camera 7 is executed repeatedly, and contents of the picture memory 10 are refreshed. In this way, even if the CRT 11 is photographed illegally and is registered, its picture is subjected to the deformation processing 2 times consequently, and an illegal fingerprint collation can be prevented.

17. 发明专利

JPH0685590B2 失效
公开(公告)号：JPH0685590B2
公开(公告)日：1994-10-26
申请号：JP25475585
申请日：1985-11-15
申请人： HITACHI LTD
发明人： HONMA KOICHI , MIZUNO HIROTAKA , TSUBOI AKIRA , FURUMURA FUMINOBU
IPC分类号： H04N13/04 , G02B27/22 , G02B27/46 , G06F3/153 , G06T1/00

18. 发明专利

JPS62115989A STEREOSCOPIC DISPLAY SYSTEM 失效
公开(公告)号：JPS62115989A
公开(公告)日：1987-05-27
申请号：JP25475585
申请日：1985-11-15
申请人： HITACHI LTD
发明人： HONMA KOICHI , MIZUNO HIROTAKA , TSUBOI AKIRA , FURUMURA FUMINOBU
IPC分类号： H04N13/04 , G02B27/22 , G02B27/46 , G06F3/153 , G06T1/00
摘要： PURPOSE:To attain a stereoscopic picture display less in fatigue by providing a means for controlling a distance to the virtual image of a display surface by an optical means based on distance information of a position of an observation point and a means for moving the display picture sideward in parallel in the display screen according to the distance. CONSTITUTION:When the image of an object 1 at a remote place such as a seabottom or a nuclear power installation is picked up by two sets of television cameras 2, 3, a video signal is displayed on two picture displays 4, 5, and the picture by a left camera 2 is observed by a left eye and the picture by a right camera 3 is observed by a right eye. The two picture display surfaces from the virtual image on a rear surface 8 of the actual display surface by lenses 6, 7. A horizontal dislocation of the picked up virtual image of the point on the surface 9 separated from the television cameras 2, 3 by the distance between the virtual image and the observer is made 0. Thereby, the direction of the line of vision of the observer observing a three dimensional picture is detected by an eye camera and an intersection point position of the lines of vision is obtained by calculating and the virtual image of the display device can be formed at the position, so that, the natural stereoscopic picture having less fatigue is performed.

19. 发明专利

JPS62115387A SPACE RESOLVING POWER MEASURING SYSTEM OF SYNTHETIC APERTURE RADAR IMAGE 失效
公开(公告)号：JPS62115387A
公开(公告)日：1987-05-27
申请号：JP25474685
申请日：1985-11-15
申请人： HITACHI LTD
发明人： MAEDA AKIRA , KASHIWARA HIROZANE , TSUBOI AKIRA , FURUMURA FUMINOBU
IPC分类号： G01S7/40 , G01S13/90
摘要： PURPOSE:To measure space resolving power at high accuracy by finding out the auto-correlation coefficient of a reproduced complex image and finding the space resolving power from the coefficient. CONSTITUTION:Synthetic aperture radar (SAR) reproduced complex picture image data stored in a magnetic tape 1 or a magnetic disk 2 are inputted 3 to a computer. Then, auto-correlation coefficient Ridelta, -N

20. 发明专利

JPS6280769A UNEQUAL INTERVAL IMAGE DISTORTION INTERPOLATION SYSTEM CONSIDERING APERTURE CHARACTERISTICS 失效
公开(公告)号：JPS6280769A
公开(公告)日：1987-04-14
申请号：JP22006785
申请日：1985-10-04
申请人： HITACHI LTD
发明人： SETO YOICHI , TSUBOI AKIRA , HAMANO NOBUO , FURUMURA FUMINOBU , YOKOYAMA TETSUO
IPC分类号： G06T3/00 , G06T1/00
摘要： PURPOSE:To interpolate rapidly and highly accurately image fogging and unequal interval image distortion due to a photographing system by forming the titled system by interpolation factor calculating processing for simultaneously correcting aperture characteristics and unequal interval image distortion and interpolation processing for executing optimum interpolation on the basis of an unequal interval generating area and an unequal interval value. CONSTITUTION:An equal interval interpolation function 2, an unequal interval interpolation function 3 ignoring the aperture characteristics and an aperture characteristics compensating interpolation function 4 are used to find out an unequal interval interpolation function 5 considering the aperture characteristics by an interpolation function calculating processing 1. Equal interval interpolation 180 is applied to sections 1, 3 and unequal interval interpolation 190 is applied to a section 2. Shape distortion to be generated on an uncorrected image 6 is previously calculated by a shape distortion calculating processing 13 on the basis of satellite system parameters (e.g. orbit and posture data) and stored in a shape distortion value information file 12. The picture element intensity on a correct position is found out by interpolating the uncorrected image 6 by interpolation processing 9 on the basis of the shape distortion value to obtain a corrected image 11.

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