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Research on Automatic Measure Technique for Image Points of LMCCD Imagery

Author: YangXiuCe
Tutor: HuZuo；GengZeXun
School: PLA Information Engineering University
Course: Photogrammetry and Remote Sensing
Keywords: LMCCD Equivalent box site photos Junction Feature Extraction Image Matching Like point automatically measure
CLC: TP391.41
Type: Master's thesis
Year: 2009
Downloads: 59
Quote: 0
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Abstract


With the continuous advancement of satellites , sensors and computer technology , remote sensing platforms for Photogrammetry aerospace platforms and even the direction of deep space . The three-line array CCD camera is ideal for transmission -type satellite photogrammetry without ground control , three-line array CCD image sensor , but the result is always up to less than the height accuracy requirements for aerial triangulation . Equivalent frame image, (Equivalent Frame Photo, hereinafter referred to as EFP) method of three-line array CCD image processing connection points , based on the introduction of the true image plane coordinates , and thus leads to a LMCCD ( line- matrix CCD array , line the wavefront array CCD array ) camera design and orientation point , the the connection point the LMCCD image laid rules , introduce technical measures based on the basic principles of the LMCCD images like a point measurement , and measurement methods , and experimental verification. This paper focuses on the following aspects were studied : 1 , with the current development status of three-line array CCD photogrammetry , surveying and mapping satellite transmission line array , especially the three-line array CCD photogrammetry camera and LMCCD camera comprehensive . 2 , through the analysis of the pros and cons of the EFP method aerotriangulation three-line array CCD image processing , focus on how the connection point between two EFP moment really like the plane coordinate analysis improvements for EFP Adjustment accuracy the beneficial effects . 3 , through the analysis of point feature extraction and image matching algorithm , focusing on study the LMCCD image directional point process connection point high-precision measurements automatically , like to point measurement template , Ly feature extraction algorithm and improved technology based LMCCD line the array plane array imaging technology automatically match . 4, using the improved the Ly feature extraction operator the positive sight array CCD image feature points are extracted , to be used for matching feature points . Based on the correlation coefficient method , the method of least squares , and multi-point relaxation method the LMCCD image matching , in order to further improve the matching speed and precision , using a three - line array images joint matching , linear array , planar array image matching matching strategy .

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Information processing (information processing) > Pattern Recognition and devices > Image recognition device
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