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We have recently proposed a new approach, named persistent scatterer pairs (PSP), for the identification and the analysis of persistent scatterers in series of full resolution SAR images. In this technique, atmosphere phase artefacts are effectively eliminated by exploiting their spatial correlation, but without using model based interpolations to remove orbital and atmospheric phase artefacts. This...
Taken Beijing for example, the paper studies on monitoring technology for urban building heating-loss using remote sensing. Integrating high resolution multi-spectral data, ground data from thermal infrared imaging devices, districts attributes, spatial analysis is done to estimate the feasibility of remote sensing application for building energy saving. What's more, the main factors of building energy-saving...
Land-use and land-cover (LULC) and their changes have significant influence on heat balance, especially in the urban area. Therefore climate measurement stations are permanently set-up on different land uses, and additionally mobile climate measurements are carried out every year at the same time and similar climate conditions. The study area is Santiago de Chile, one of the most dynamic and fast...
Ever-present spatial varying haze contamination in satellite scenes limits applications, especially urban remote sensing using visible and near infrared bands of low temporal resolution multispectral satellite imageries. We introduce a haze removal module coded in IDL language (used with ENVI software) which is a three-step framework comprised of haze detection, haze perfection and haze removal. The...
In this paper, we propose a level set based automatic building extraction method using prior shapes. We introduce a variable shape model which together with the level set function for segmentation dynamically indicates the region with which the prior shape should be compared. Our model is capable of segmenting an object from an image based on the image intensity as well as the prior shape. In addition,...
Spaceborne SAR interferometry (InSAR) is a well known microwave remote sensing technique which has been applied for topography mapping and ground motion monitoring by exploiting phase difference from SAR data acquisition with relevant large spatial scale and high precision. The developed Permanent Scatterers Interferometry (PSI) is a further step of InSAR technique which offers a convenient processing...
The boundary and acreages of urbanization area of Jiaozuo city are obtained respectively from the three-stage Landsat images of 1988, 1992 and 2001. The results of urbanization area expansion are acquired and compared by means of GIS overlaying analysis, which shows that the city of Jiaozuo had started a fast development since 1992, and the urban area expanded quickly towards the new hi-tech zone,...
In this paper, we propose a novel procedure of detecting control points from SAR image based on Optical Image Patches procedure. The method presented here is a three-step procedure. In the first stage, a local image patch from the SAR image is estimated from the geo-information of the SAR image and the GCP geo-coordinate, and the local patch is performed an affine transformation by using the four...
This article studied the urban heat island effect of a western city, the capital of Qinghai Province on the western plateau. This research was based on MODIS LST products from 2000 to 2008. The results showed: 1) the urban area had higher LST, the suburban and rural surroundings had lower LST; 2) the county with higher altitude had lower LST, while had lower LST with higher altitude; 3) the urbanization...
Multi-mode Airborne Digital Camera System (MADC) is a novel airborne digital camera developed by Institute of Remote Sensing Applications of Chinese Academy of Sciences. The image acquisition and processing of MADC system and its application in the mapping and application of city ortho-image are introduced in the paper. The Jining city in Shandong province was taken as an example for the application...
This paper focuses on the topic of extracting residential properties information based on texture features in low or moderate resolution SAR image, because the residential area has characters of high bright and regular texture in that scale image. Firstly, filtering the noises of the SAR image by using the FROST algorithm; secondly, obtaining a binary image which contains the residential information...
Since recent advances of remote sensing instruments have significantly improved sensor's spectral resolution, pixel resolution is larger than the object size, such that the hyperspectral signal collected by the sensor at each pixel is formed by an integration of signals, which can be considered macroscopically pure, are usually named ldquoendmembersrdquo in hyperspectral image. It is top of all in...
As the retrieval entrance, description of retrieval objects plays an important role in CBSIR (Content-Based SAR (Synthetic Aperture Radar) Image Retrieval) systems. Most of the CBSIR systems take one Region of Interest (ROI) from the original image, which contains the retrieval object, as the retrieval entrance. Besides, freehand sketch retrieval methods are used extensively in CBOIR (Content-Based...
Synthetic aperture radar interferometry (InSAR) is a novel remote sensing technique to measure earth surface deformation, it is capable of obtaining dense information related to the deformation of a large area quickly, economically and effectively. However, Conventional InSAR technique is easily suffered from both spatial and temporal decorrelation which limits its application, especially for long...
Impervious surface is a significant factor in monitoring urban development and environmental quality. However, accurate and cost-effective extraction of impervious surface is still a challenge. In light of the increasing availability of multisource remote sensing data from different imaging sensors, this study developed a method to map large-area impervious surface percentage at the sub-pixel level...
The image acquisition and processing of Multimode Airborne Digital Camera (MADC) and its application in the digital city are introduced in this paper, which include urban landscape visualization, land cover survey, building identification, road investigation, city planning monitoring etc . The town of Shilongzhen, a part of Dongguan city in Guangdong province located in the south of China was taken...
Building detection using LiDAR data is a popular topic in LiDAR data processing. The object classification can play an important role in the detection. In this paper, a new algorithm based on LiDAR point clouds is developed to resolve the object classification difficulties in the case of trees close to buildings. Compared with other algorithms, the methods can work effectively due to use the combination...
With the rapid development of Shunyi region in Beijing, China, the ground fissures maintained slow growth since 1980s under both the nature and human activity impaction. Ground fissures have caused serious damages to buildings, roads, and farmlands, threatening the safety of residences in study area. So based on the Global Positioning System, Geographic Information System and Remote Sensing techniques,...
This paper proposes a research framework for studying urban air pollution. The framework generalizes the comprehensive thinking and process of urban air pollution research from a GIS-based perspective and pays more attention to the spatial distribution of air pollution. It includes three sections in sequence of data acquisition, model running and result applications. The authors utilize spatial data...
For urban hyperspectral imagery with high spatial resolution, both spectral and spatial information are important and should be combined together to improve classification accuracy. In this paper, different combination strategies are investigated. In particular, a two-stage algorithm is developed where the pixel shape index (PSI)-based features are extracted as low level spatial features which are...
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