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多源信息图像综合处理技术是以数字图像处理学为基础,综合了计算机、信息论、遥感技术等学科信息处理的综合处理技术。农业地质是研究农业的地质背景条件及相关因素的科学。农业地质具有边缘学科的特点,单凭一种信息研究复杂的农业地质问题往往具有一定的局限性、偶然性和多解性,将各学科信息综合起来可靠性就大多了。应用多源信息图像综合处理技术将是深入系统研究农业地质问题的重要发展方向,也是农业地质研究的客观要求。 多源信息图像综合处理技术应用于农业地质时,应把它看成一个系统,即从多源数据资料的收集、整理及常规数据处理→图… 相似文献
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黄金地质勘查信息系统设计 总被引:1,自引:0,他引:1
为适应地质工作数字化发展趋势,实现黄金地质勘查工作的数字化、信息化、网络化、标准化,设计开发黄金地质勘查信息系统。该系统针对黄金部队地质勘查与管理工作特点、组织结构、计算机软硬件及网络建设现状和发展趋势,充分考虑文本数据、图形(图像)数据特性,采用GIS、数据库、.net技术,设计分布式黄金地质信息数据库,实现施工生产信息、管理信息和成果资料信息的一体化存储;设计项目管理、施工生产、统计调度、矿权管理四个模块,满足地质勘查施工生产、过程管理和成果管理的需要。系统采用单机版与网络版相结合的模式,实现地质勘查各类数据的存储、管理、维护和使用。 相似文献
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遥感技术在深圳-大亚湾沿海高速公路工程地质调查及选线中的应用 总被引:1,自引:0,他引:1
应用计算机增强和特征信息提取技术,结合航空摄影图像的立体观察对比,对卫星TM数字图像地学信息进行解译研究,并通过野外调查验证,对深圳-大亚湾沿海高速公路沿线工程地质环境进行了迅速评价,经计算机不同处理方法处理获得的TM专题信息图像在进行地质构造解译和岩土体分类中均起到重要作用,而航片在地质体边界圈定和详细定位以及灾害地质现象分析方面效果较好。在不到两个月的时间里就完成了该项目从图像处理、解译到野外调查和成图及报告编写的全过程工作,节约勘察资金50%以上,满足了公路勘查前期工作的需要,也充分体现了遥感技术的优越性。遥感解译研究与常规地质调绘方法相结合,可取得事半功倍的效果,也是公路勘察手段现代化的标志和必经之路。 相似文献
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本文介绍用于地质勘查的数字图像处理技术。所处理的数据涉及遥感、地质、地球物理、地球化学和地理等学科的多源地学信息。针对地学信息的特殊性,研究和开发了各种数字图像处理方法,以增强和提取用于地质勘查的重要信息,辅助地质构造分析,并在矿产预测中取得初步效果,显示出数字图像处理技术在地质勘查中的应用潜力。 相似文献
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本文首先从建立地质勘查业务模型入手,对地质勘查工作手段的多样性和复杂性,以及对地质勘查数据的多源性和异构性进行分析,构建完成了一套相对完整实用的地质勘查信息系统。最后从实际应用的角度,阐述了地质勘查数字化与信息建设的研究意义,以及今后的研究与发展趋向。 相似文献
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多源地学信息数字图像综合技术及在盛源盆地的应用研究 总被引:1,自引:0,他引:1
通过图像显示系统,实现了铀资源多种地学信息数字图像的综合处理,其内容包括资料的输入 处理、资料配准和插值处理以及多源地学信息的增强、分解、提取、分类、叠合、复合等处理。 以盛源盆地为样区进行了试验性研究。利用图像的信息增强、叠合技术,研究了试验区的地质 构造环境;利用图像信息的分解、叠合技术,分析了铀、针、钾的分布格局及其地质意义;通过 矿床找矿判据的复合、提取,进行了找矿靶区的初选;来用信息的分类技术,进行了盛源盆地地区铀 资源的总体评价。通过上述计算机信息处理技术,对这个研究程度较高的老矿区,在某些重要地 质问题上,取得了一些新认识,并经野外检验,预测了六片成矿远景地段。 在上述研究基础上,初步建立了铀资源多种地学信息数字图像综合技术系统。 相似文献
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通过图像显示系统,实现了铀资源多种地学信息数字图像的综合处理,其内容包括资料的输入处理、资料配准和插值处理以及地学信息的增强、分解、提取、分类、叠合、复合等处理。以盛源盆地为样区进行了试验性研究。利用图像的信息增强、叠合技术,研究了试验区的地质构造环境;利用图像信息的分解、叠合技术、分析了铀、钍、钾的分布格局及其地质意义;通过矿床找矿判据的复合、提取,进行了找矿靶区的初选;采用信息的分类技术,进行了盛源盆地地区铀资源的总体评价。通过上述计算机信息处理技术,对这个研究程度较高的老矿区,在某些重要地质问题上,取得了一些新认识,并经野外检验,预测了六片成远景地段。在上述研究基础上,初步建立了铀资料多种地学信息数字图像综合技术系统。 相似文献
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Manuel A. Aguilar Fernando J. Aguilar Francisco Agüera 《The Photogrammetric Record》2005,20(112):335-350
Generating maps of small areas using conventional aerial photography is of great interest for small engineering firms. The main problem is the high cost of the sophisticated digital photogrammetric workstations usually employed. In this paper, a low-cost close range photogrammetric software package is used to measure the three-dimensional coordinates of points on the land surface from a photogrammetric flight at a scale of approximately 1:5000. Furthermore, the influence of the type of scanner used to digitise photographs (consumer-grade or photogrammetric scanner), the resolution of the digital images and the number of control points required are examined. The root mean square errors obtained at the check points, using a low-cost close range software package, scanning aerial images with a photogrammetric scanner and 24 ground control points, were around 116 mm for X and Y coordinates, and 191 mm for Z. These levels of accuracy allow the generation of planimetric maps at a scale of 1:1500 and topographic maps with a contour interval of around 1 m. When the images were scanned with a consumer-grade scanner, the root mean square errors were around 150 mm for X and Y, and 271 mm for Z. 相似文献
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AbstractMulti-sensor and multi-resolution source images consisting of optical and long-wave infrared (LWIR) images are analyzed separately and then combined for urban mapping in this study. The framework of its methodology is based on a two-level classification approach. In the first level, contributions of these two data sources in urban mapping are examined extensively by four types of classifications, i.e. spectral-based, spectral-spatial-based, joint classification, and multiple feature classification. In the second level, an objected-based approach is applied to decline the boundaries. The specificity of our proposed framework not only lies in the combination of two different images, but also the exploration of the LWIR image as one complementary spectral information for urban mapping. To verify the effectiveness of the presented classification framework and to confirm the LWIR’s complementary role in the urban mapping task, experiment results are evaluated by the grss_dfc_2014 data-set. 相似文献
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This study contributes to the quality assessment of atmospherically corrected Landsat surface reflectance data that are routinely generated by the Landsat Ecosystem Disturbance Adaptive Processing System (LEDAPS). This dataset, named Landsat Surface Reflectance Climate Data Record (Landsat CDR), is available at global scale and offers unprecedented opportunities to land monitoring and management services that require atmospherically corrected Earth observation (EO) data. Our assessment is based on the comparison of the Landsat CDR data against a set of Landsat and DEIMOS-1 images processed to a high degree of accuracy using an industry-standard atmospheric correction algorithm (ATCOR-2). The software package has been used for many years and its correction procedures can be considered consolidated and well-established. The dataset of Landsat and DEIMOS-1 images was acquired over a semi-arid agricultural area located in Lower Austria and was independently corrected by using a manual fine-tuning of ATCOR-2 parameters to reach the highest possible accuracy. Results show a very good correspondence of the surface reflectance in each of the six reflective spectral channels as well as for the NDVI (Normalized Difference Vegetation Index). An additional comparison against a NDVI time series from MODIS revealed also a good correspondence. Coefficients of determination (R2) between the two multi-year and multi-seasonal Landsat/DEIMOS datasets range between 0.91 (blue band) and 0.98 (nIR, SWIR-1 and SWIR-2). The results obtained for our semi-arid test site in Austria confirm previous findings and suggest that automatic atmospheric procedures, such as the one implemented by LEDAPS are accurate enough to be used in land monitoring services that require consistent multi-temporal surface reflectance data. 相似文献
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The mixed pixels are treated as noise or uncertainty in class allocation of a pixel and conventional hard classification algorithms
may thus produce inaccurate classification outputs. Thus application of sub-pixel or soft classification methods have been
adopted for classification of images acquired in complex and uncertain environment. The main objective of this research work
has been to study the effect of feature dimensionality using statistical learning classifier — support vector machine (SVM
with sigmoid kernel) while using different single and composite operators in fuzzy-based error matrixes generation. In this
work mixed pixels have been used at allocation and testing stages and sub-pixel classification outputs have been evaluated
using fuzzy-based error matrixes applying single and composite operators for generating matrix. As subpixel accuracy assessment
were not available in commercial software, so in-house SMIC (Sub-pixel Multispectral Image Classifier) package has been used.
Data used for this research work was from HySI sensor at 506 m spatial resolution from Indian Mini Satellite-1 (IMS-1) satellite
launched on April 28, 2008 by Indian Space Research Organisation using Polar Satellite Launch Vehicle (PSLV) C9, acquired
on 18th May 2008 for classification output and IRS-P6, AWIFS data for testing at sub-pixel reference data. The finding of this research
illustrate that the uncertainty estimation at accuracy assessment stage can be carried while using single and composite operators
and overall maximum accuracy was achieved while using 40 (13 to 52 bands) band data of HySI (IMS-1). 相似文献
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一种用于机器视觉检测的图像配准快速算法 总被引:2,自引:0,他引:2
图像配准是机器视觉检测的关键步骤之一。针对产品包装印刷质量检测,文中提出了一种新的图像配准算法。其基本思想是:首先进行图像概略匹配得到特征点的概略位置,接着进行特征点的精确检测,根据检测到的对应特征点坐标计算转换参数,最后生成配准图像。实验表明,该算法计算速度快,具有较好的精度和稳定性,适用于在线机器视觉检测等对速度要求高,而图像只有小角度旋转的情况。 相似文献
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一种改进的降落影像序列特征匹配方法 总被引:1,自引:1,他引:0
针对传统SIFT匹配方法用于嫦娥三号降落影像匹配效率低的问题,提出了一种改进的降落影像序列特征匹配方法。重构了着陆器垂直降落阶段拍摄过程的几何模型,并得到了不同降落影像中的同名匹配点之间的几何约束关系,然后通过SIFT方法进行影像中极值点的提取和特征描述,最终将几何模型约束用于极值点的匹配点搜索过程中,优化了匹配过程。采用嫦娥三号着陆器真实降落影像进行了试验,结果表明,改进方法能够取得较为稳定的匹配结果,且平均可以减少约为18%的匹配耗时,研究结果对后续深空探测任务的开展具有重要的参考价值。 相似文献
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对月球探测任务、月球遥感制图技术与产品进行综述。从1958年开始,全世界已开展126次(其中70次成功)月球探测工程任务,其中月球遥感制图是其必需的基础性工作。由于月球环境的特殊性,其遥感制图技术与对地观测制图相比具有很大的挑战和更大的难度。目前,中国嫦娥二号轨道器获取的7 m分辨率立体影像是覆盖全月球分辨率最高的立体影像数据,美国月球侦察轨道器LRO任务的激光雷达高度计LOLA数据是精度和密度最高的激光测高数据,LRO NAC影像的分辨率最高(0.5—2 m)但未覆盖全球。在各个探测任务中,基于月球遥感数据和摄影测量技术,已经制作了大量的全球及区域的影像拼图、正射影像图和数字高程模型等制图产品。对月球遥感制图技术发展进行展望,探讨了利用国际多探测任务数据建立新一代控制网和进行精细制图的必要性及技术思路。 相似文献
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