33 results about "Land cover land use" patented technology

The invention relates to the field of high-resolution remote sensing image land classification, in particular to an object-oriented unmanned aerial vehicle high-resolution image coal fire region landcover classification method. The method comprises the main steps that on the basis of coal fire region high-resolution color images collected by an unmanned aerial vehicle, homogenous objects are divided through an image multi-resolution segmentation algorithm to construct an expert knowledge base adopting spectral signatures, shape features, textural features and height information as main parts,and high-precision classification of a coal fire region is achieved by means of a rule set and the most adjacent classification method, wherein the classification precision is much higher than that of a traditional pixel-based classification method. The requirement for complex coal ire region land cover precise classification is met.

The invention provides a method and a medium for extracting green degree space of an urban agglomeration. The method comprises the following steps: acquiring high-score remote sensing data of urban agglomeration and extracting land cover data of urban agglomeration; Obtaining the social perception data of urban agglomeration, and extracting the social function attribute data of urban agglomerationland; According to the cover data and social function attribute data, the land of urban agglomeration is classified, and the information about the land and greenness of urban agglomeration is obtained. According to the classification information, the greenness of urban agglomeration is extracted. The present invention solves the problem that only a single remote sensing data can obtain the land cover information in the related art, and the social function attribute of the urban green space cannot be obtained, and realizes the statistics and research of the urban agglomeration green space containing the social function attribute.

The invention relates to the technical field of land coverage classification, and in particular to a land coverage classification system and method. The method comprises the following steps of: acquiring interest point information of an open source map by utilizing a search keyword so as to obtain an interest point data set; adding a corresponding land coverage class for each piece of interest point information in the interest point data set according to a preset land coverage class; converting the interest point information into geographic space vector data; segmenting an original remote sensing image to obtain a plurality of unclassified vector polygons; overlapping the vector polygons and the geographic space vector data through address matching, endowing the land coverage classes in the geographic space vector data corresponding to the vector polygons with the vector polygons so as to complete the land coverage classification of the vector polygons. According to the system and method provided by the invention, the land coverage samples can be rapidly and accurately acquired in a large scale, so that the land coverage classification efficiency is improved.

The invention discloses a recurrent neural network-based remote sensing monitoring method and a device for ground surface abnormal phenomenons. The method comprises the steps: inputting a training front-segment sequence into an encoder constructed based on a bidirectional recurrent neural network, and obtaining a front-segment hidden state sequence for representing the global information of the training front-segment sequence; sequentially inputting the numerical value of the last moment into a decoder based on a single-layer recurrent neural network, so as to sequentially obtain predicted values corresponding to the moments in the training back-end sequence; adopting an encoder-decoder model to predict an observation location at a future moment. By the adoption of the above scheme, an overall change rule of a historical sequence can be mined and observation values at multiple moments in the future can be predicted; near-real-time anomaly monitoring and real-time monitoring and supervising are achieved, meanwhile, required data preprocessing and manually set experience parameters are few, the requirements for experience and professional backgrounds of implementers are not high, themethod is suitable for various geographic areas and land cover types, and the method is high in feasibility, robustness and prediction result accuracy.

The invention discloses a land cover mapping method, which comprises the following steps of: extracting effective information of an existing land cover product by establishing a multi-source data space consistency recognition and sample statistical screening method, and establishing a multi-source data space consistency recognition and sample statistical screening method on the basis of a remote sensing cloud calculation platform and mass remote sensing images; a machine learning algorithm is applied to correct inconsistent information among various land cover products, so that the problems of poor consistency degree and low precision of current multi-source land cover data are solved; by establishing a method for quickly extracting a large-range reliable training sample, the difficulty of insufficient training samples of cloud calculation platforms such as a Google Earth engine and the like can be effectively solved; according to the technical scheme, on-site land cover interpretation reference sample points and prior knowledge are not needed, a land cover data fusion product with high spatial resolution in a large-range region can be quickly and accurately generated, high-precision and high-efficiency land cover mapping can be effectively realized, and the method has portability.

The invention relates to a coastline dividing method and system based on a land cover utilization principle. The method comprises the steps of dividing a sandy coast formed by wave motion, dividing a powdered sand and silt coast containing silt, dividing a bedrock coast which is of a rock structure, dividing an estuary coast which is distributed in a bending manner and/or dividing an artificial coast including a wharf or a revetment or a dike or a bulwark or a salt pan, conducting connection treatment on the divided coasts, and forming coastlines. According to the coastline dividing method and system based on the land cover utilization principle, the problems that coasts have various types and purposes and are high in natural variability and artificial categorization arbitrariness, and it is difficult to accurately survey and mark out the coastlines on different types of coasts are effectively solved; dividing bases based on the coastal-zone land cover utilization principle are given out for each coast type, and the advantages of being unified in dividing standard, reliable in dividing basis and reasonable in dividing scheme are achieved. The coastline dividing method and system are simple in principle, high in implementation and capable of being widely applied to the field of coastal-zone ecological environment assessment and the like.

The invention discloses a land cover data fusion correction method. According to the method, uncertain information filtering and fine spatial resolution information extraction from a coarse spatial resolution multi-source data consistent area to a fine spatial resolution multi-source data consistent area is achieved through a generated super-pixel object in combination with a principal component analysis method; and through a method of obtaining a reliable training sample through a local sampling technology, a fine spatial resolution multi-source data inconsistent region is corrected, and fusion correction of land cover data is achieved. Compared with the prior art that only fusion correction of coarse spatial resolution multi-source data can be achieved, the technical scheme of the invention achieves fine improvement from coarse resolution to fine resolution, has portability, solves the difficulty of simultaneously improving resolution and precision in the fusion correction process of a multi-source data product, and effectively solves he problem of improving the operation efficiency of mass data.

The invention belongs to water conservation function influence evaluation, and particularly relates to a method for evaluating the influence of polar ecological retreat on a water conservation function by integrating an InVEST model and a multivariate statistical method. The method comprises the following steps: 1), performing type information division on a wetland remote sensing image, and detecting and analyzing a quantitative relationship between wetland type changes and water conservation; 2), carrying out hydrological and geomorphic classification on the wetland according to the wetland coating remote sensing data; 3), establishing an InVEST model; 4), calculating the water conservation amount before and after the spatial pattern change of a regional landscape to be evaluated by usingthe InVEST model; and 5), according to the calculation result, obtaining the degree of the shadow of the landscape space pattern change on the water conservation function by utilizing the principal component and a clustering analysis method. According to the method, an InVEST model is adopted, and the yield is evaluated by comparing the water yields before and after each change coating project isimplemented. In addition, the land cover change characteristics of the wetland are determined, and the influence of the water conservation function is evaluated by considering the land cover, the climate change and the landscape pattern. Accurate and scientific evaluation is carried out on the influence on the water conservation function in the polar ecological retreat project, valuable referenceis provided for the polar ecological retreatproject, and the result provides guidance for regional ecological restoration and ecosystem function evaluation of the government.

The invention discloses a global land utilization and land cover sequence spatialization method integrating GCAM and CA. The GCAM model and the geographic CA are combined, global 283 subareas are achieved, global land use sequence spatial data products from 2010 years to 2100 years are achieved, the spatial resolution is 1 km, and the time resolution is 5 years. By integrating the initial probability of the neural network, the neighborhood influence, the ground class transformation weight matrix of each sub-region and a planning constraint condition, the comprehensive transformation probability of the ground class of each sub-region is obtained, and the land utilization and the land coverage of each sub-region is spatialized. The method is mainly applied to the global land utilization change and coverage modeling under different development scenes in the future, has the capability of producing high-resolution global LUCC products, and promotes the research on the construction of a high-resolution land utilization model under the global scale.

The invention relates to the technical field of urban planning, in particular to an urban ecological vulnerability spatial prediction method based on GIS and CA simulation, which comprises the following steps: creating neighborhood analysis of current land cover data; creating an orthogonally distributed grid; loading ecological vulnerability space evaluation data; identifying a neighborhood ecological vulnerability space of the land for future development; dividing ecological vulnerability space levels of neighborhoods of land for future development; extracting the highest threshold data of the ecological vulnerability space of the neighborhood of the land for the future development; and building an urban ecological vulnerability spatial distribution prediction initial model based on themodel builder, deleting initial data, and completing the prediction model tool for predicting urban ecological vulnerability spatial distribution. According to the method, the defect of empirical judgment in traditional planning is avoided, the urban ecological vulnerability spatial distribution is quantitatively predicted, and the neighborhood becomes logic of the vulnerability spatial probability in the process of predicting the urban ecological vulnerability spatial distribution.

The invention belongs to the field of agricultural remote sensing, and relates to a remote sensing identification method for land cover and planting structure of a fragmented agricultural area, which adopts a machine learning algorithm to extract land utilization, does not depend on actually measured sample points, and obtains high-precision agricultural area land utilization rasterized data after automatic training. According to the method, an agricultural area and a non-agricultural area are classified through a supervision algorithm support vector machine (SVM), and then crop types are further classified and discriminated by adopting a decision tree algorithm based on obtained agricultural area classification raster data. The method does not depend on actual measurement data, classification time and economic cost are greatly reduced, and negative effects of the quality of a sample training set of a traditional machine algorithm on a classification result are effectively avoided. And meanwhile, the land utilization mapping precision required by agricultural remote sensing application is met on the premise of ensuring high classification efficiency.

The invention provides a storm surge simulation method based on WRF land cover data replacement. The storm surge simulation method comprises the following steps: S1, using ArcGIS for processing land cover data to be replaced; s2, processing land cover data in a preprocessing module in the WRF mode; s3, operating the WRF to obtain simulated wind field data; s4, establishing an SWAN wave model and an ADCIRC hydrodynamic model; s5, respectively providing the simulated wind field data after the replacement of the land cover data for the SWAN wave model and the ADCIRC hydrodynamic model; s6, inputting the wave radiation stress obtained by simulation of the SWAN model into an ADCIRC model; and S7, performing storm surge simulation by using the ADCIRC model. According to the invention, the WRF-SWAN-ADCIRC coupling model is comprehensively used, the method can be used for simulating the storm surge in the bay area of the sea mouth, outdated built-in land cover data in the WRF are replaced, andthe accuracy of storm surge simulation is improved.

The invention relates to a flood disaster loss assessment method and a simulation deduction system, and belongs to the technical field of assessment analysis simulation, and the method comprises the steps: constructing and training a flood deduction neural network model; hydrological characteristic information is collected and monitored in real time, and the precipitation of a prediction area is calculated; flood deduction is carried out; setting loss evaluation parameters; and carrying out loss evaluation calculation. According to the invention, satellite remote sensing and a sensor are comprehensively utilized to monitor data, so that the problems of information integration complexity and insufficient real-time performance of collected information are solved; a neural network deduction model is established, the flood deduction capability is continuously optimized through deep self-learning, network parameters are adjusted and optimized according to land cover data, and the loss evaluation accuracy is improved; and a Markov chain method is adopted in precipitation prediction, so that the redundant data volume is relieved, and the efficiency of deduction calculation is improved.

The invention provides an earth surface cover change intensity evaluation method and system for a polar region. The method comprises the following steps: acquiring remote sensing image data of a to-be-identified polar region; according to the remote sensing data, adopting a random forest method for classification to obtain bare rock and water body information of the polar region; according to the remote sensing data, extracting the glacier outer edge in the polar region to be identified by adopting a visual interpretation method, and identifying the glacier type by adopting a threshold value method; spatial overlay analysis is carried out on glacier areas, rock mass areas and water body areas obtained according to remote sensing image data obtained in different periods, change areas are obtained, and the earth surface cover change intensity is obtained through calculation. According to the method, the remote sensing image is used as a data source to obtain the land cover change condition of a key area, the land cover of the Antarctic coastal zone area is classified, and the land cover change intensity analysis of the polar coastal zone area is realized by combining and applying a space analysis method and a statistical analysis method.

The invention relates to a characterization method of land utilization/land cover (LULC) change, comprising following steps of: taking a static NDVI as a core, directly utilizing the NDVI as a quantitative calculation index, or deriving a new quantitative calculation index based on the NDVI, and using the NDVI as a core to characterize the land utilization/land cover (LULC) change. According to the method, the change of land utilization/land cover (LULC) can be represented, and inspiration can be provided for many applications related to land utilization such as land utilization planning, land utilization evaluation and land utilization suitability evaluation.

The invention provides a sampling point distribution method and device based on landscape heterogeneity and electronic equipment, and the method comprises the steps of collecting a satellite remote sensing image of a target region, and carrying out the clustering processing, and obtaining a land cover clustering result map of the target region; based on landscape heterogeneity of a target area, dividing the land cover clustering result map into a plurality of grids according to a first preset rule, the plurality of grids being congruent square grids; based on the landscape heterogeneity of the corresponding area in each grid, determining sampling points distributed in each grid according to a second preset rule, wherein the landscape heterogeneity is described by different indexes in the first preset rule and the second preset rule. According to the method, the device and the electronic equipment provided by the invention, the distribution of the sampling points is controlled, the sampling cost is reduced, and the sampling efficiency is improved.

The invention provides a cross-checking method and a cross-checking device for land coverage remote sensing products. The cross-checking method and the cross-checking device relate to the technical field of land coverage remote sensing. The cross-checking method for the land coverage remote sensing products defines two error indexes of a mean square root error and a correlation coefficient based on covariance, and obtains an error of each type of each variety of land coverage remote sensing products relative to real land coverage distribution through comparing three varieties of land coverageremote sensing products obtained independently. The cross-checking method for the land coverage remote sensing products improves the efficiency of checking the land coverage remote sensing products, reduces the checking cost, and can realize full coverage checking of the land coverage remote sensing products.