共查询到19条相似文献，搜索用时 109 毫秒
1.
2.
3.
遥感技术用于土地更新调查的研究 总被引：1，自引：0，他引：1
结合国土资源大调查,利用卫星遥感数据对土地更新调查方法进行了研究.通过研究,为土地变更调查提供了快捷、高效、科学的新方法,解决了SPOT5数据在土地变化图斑解译、提取、调查中的相关技术难题,为遥感数据辅助开展土地调查提供了科学依据. 相似文献
4.
5.
从遥感技术的发展现状出发,研究了数字地图制图的数据来源和数据更新途径,介绍了利用高分辨率遥感影像更新数字地图的流程,充分利用遥感影像有效、快速的完成数字地图更新的技术方法。 相似文献
6.
针对 1∶5万地形图现势性差 ,介绍利用遥感影像更新 1∶5万核心矢量地形数据的技术方案 ,并针对实施中遇到的如遥感更新资料源的选取、区域的划分、影像融合处理和影像地物判读等问题进行探讨 ,总结出一些实践经验 ,供同行参考 相似文献
7.
SPOT5遥感影像在地形图更新中的潜能评估 总被引：1，自引：1，他引：1
SPOT5遥感卫星一年前成功发射后,许多国家对SPOT5的遥感影像在不同的领域应用感兴趣。IGNFRANCE也想对SPOT5遥感影像更新基本比例尺地形图的潜能进行评估,因此本次研究选择了SPOT5遥感影像和1／25000比例尺的地形图。 相似文献
8.
基于遥感分析的城市土地定级技术研究——以武汉市为例 总被引：1，自引：0，他引：1
在城镇土地定级方法中引入遥感数据分析,提出了应用遥感数据量化定级因子,实现土地定级快速更新的可行方案。以武汉市为例,利用MODIS植被指数和陆表温度产品,准确量化环境因子对定级单元的作用,快速更新武汉市土地定级成果,缩短了更新时间,提高了工作效率,优化了更新成果。 相似文献
9.
利用遥感影像更新1:5万核心矢量地形数据技术方案及问题探讨 总被引：1，自引：0，他引：1
针对l：5万地形图现势性差，介绍利用遥感影像更新l：5万核心矢量地形数据的技术方案，并针对实施中遇到的如遥感更新资料源的选取、区域的划分、影像融合处理和影像地物判读等问题进行探讨，总结出一些实践经验，供同行参考。 相似文献
10.
11.
12.
13.
The updating of classification maps, as new image acquisitions are obtained, raises the problem of ground-truth information (training samples) updating. In this context, semisupervised multitemporal classification represents an interesting though still not well consolidated approach to tackle this issue. In this letter, we propose a novel methodological solution based on this approach. Its underlying idea is to update the ground-truth information through an automatic estimation process, which exploits archived ground-truth information as well as basic indications from the user about allowed/forbidden class transitions from an acquisition date to another. This updating problem is formulated by means of the support vector machine classification approach and a constrained multiobjective optimization genetic algorithm. Experimental results on a multitemporal data set consisting of two multisensor (Landsat-5 Thematic Mapper and European Remote Sensing satellite synthetic aperture radar) images are reported and discussed. 相似文献
14.
15.
针对目前矿山开发遥感调查多是依赖国外影像且监管手段滞后的问题,本文在矿产资源开发遥感调查基础上,以四川省攀枝花市红格钒钛磁铁矿区为例,基于资源三号卫星影像,研究了国产高分辨率卫星影像在矿山开发遥感调查中应用的可行性。同时,利用C#语言,研发了矿山开发动态监测系统,提高了矿山开发遥感调查的实时性与可靠性,提升了矿山开发监管工作的效率。 相似文献
16.
17.
Richard Lucas Katie MedcalfAlan Brown Peter BuntingJohanna Breyer Dan Clewley Steve KeyworthPhilippa Blackmore 《ISPRS Journal of Photogrammetry and Remote Sensing》2011,66(1):81-102
The Phase 1 Survey is the most comprehensive and widely used national level map of semi-natural habitats in Wales. However, the survey was based largely on field survey and was conducted over several decades, before being completed in 1997. Given that resources for a repeat survey were limited, this study has used an object-orientated rule-based classification implemented within eCognition of multi-temporal satellite sensor data acquired between 2003 and 2006 to map semi-natural habitats and agricultural land across Wales, thereby allowing a progressive update of the Phase 1 Survey. The classification of objects to Phase 1 habitat classes was undertaken in two steps; firstly the landscape of Wales was divided into objects using orthorectified SPOT-5 High Resolution Geometric (HRG) reflectance data (10 m spatial resolution) and Land Parcel Information System (LPIS) boundaries. A rule-base was then developed to progressively discriminate and map the distribution of 105 sub-habitats across Wales based on time-series of SPOT HRG, Terra-1 Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) and Indian Remote Sensing Satellite (IRS) LISS-3 data, derived datasets (e.g., vegetation indices, fractional images) and ancillary information (e.g., topography). The rules coupled knowledge of ecology and the information content of these remote sensing data using a combination of thresholds, Boolean operations and fuzzy membership functions. A second rule-base was then developed to translate the more detailed sub-habitat classification to Phase 1 habitat classes. Indicative accuracies of the revised Phase 1 mapping, based on comparisons with the later Phase 2 survey (for selected habitats), were >80% overall and typically between 70% and 90% for many classes. Through this exercise, Wales has become the first country in Europe to produce a national map of habitats (as opposed to land cover) through object-orientated classification of satellite sensor data. Furthermore, the approach can be adapted to allow continual monitoring of the extent and condition of habitats and agricultural land. 相似文献
18.
曲折道路遥感影像圆投影匹配改进追踪法 总被引：1，自引：0，他引：1
道路提取是遥感信息提取的重点和难点。曲折道路（如盘山公路等）方向突变现象严重,当道路的宽度有变化或受到阴影、杂物遮挡等干扰时,其提取难度进一步增大。针对该问题,本文提出一种基于改进圆投影匹配的曲折道路自动追踪方法。首先,对标准圆投影匹配进行改进,包括：（1）提出圆投影向量近似度参数,实现对圆投影模板离散近似程度和计算量的控制;提出圆投影模板最优半径确定方法,以保证获得最大道路特征条件下,减少模板匹配计算量;（2）引入干扰校正算法,在一定程度上克服了由于光照、噪声等因素造成匹配困难的问题;其次,提出基于改进圆投影匹配的道路追踪方法,并在模板匹配过程中加入自适应机制,即将已匹配道路按照一定的权重参与后续模板匹配,一定程度上克服道路形态的变化和干扰。最后,以曲折道路特征突出的山区遥感影像SPOT-5和GeoEye-1进行道路提取实验。实验结果表明,采用提出的基于改进圆投影匹配的道路追踪算法具有方向无关的特点,适用于曲折道路遥感提取。对道路中心线的提取误差约2~5m,提取准确率高于80%。 相似文献