WO2020000271A1 - 一种基于无人机的数据处理的方法及装置 - Google Patents
一种基于无人机的数据处理的方法及装置 Download PDFInfo
- Publication number
- WO2020000271A1 WO2020000271A1 PCT/CN2018/093173 CN2018093173W WO2020000271A1 WO 2020000271 A1 WO2020000271 A1 WO 2020000271A1 CN 2018093173 W CN2018093173 W CN 2018093173W WO 2020000271 A1 WO2020000271 A1 WO 2020000271A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- feature
- dimensional gabor
- gabor
- dimensional
- expression
- Prior art date
Links
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/40—Extraction of image or video features
Definitions
- the present invention relates to the field of computers, and in particular, to a method and device for data processing based on unmanned aerial vehicles.
- the hyperspectral image obtained by imaging a feature on hundreds of bands with a hyperspectral sensor contains triple information about the feature's radiation, space, and spectrum, making the feature identification and classification more effective. It is the current remote sensing imaging technology. Research hotspots. However, hyperspectral sensors are susceptible to the influence of clouds. At the same time, the situation of same-spectrum heterospectrum and same-spectrum foreign matter in hyperspectral images widely exists, resulting in low accuracy of classification directly using the original hyperspectral image.
- the embodiment of the invention discloses a method for data processing based on unmanned aerial vehicles.
- the feature fusion is performed by using a hyperspectral image and laser detection and measurement data containing the geometrical information of the ground feature to improve the classification accuracy of the ground feature.
- a first aspect of the embodiments of the present invention discloses a method for processing data based on an unmanned aerial vehicle.
- the method includes:
- Supervised classification is performed according to the fusion expression feature and a support vector machine with a radial basis kernel function RBF kernel.
- a second aspect of the invention discloses a device, the device including:
- Acquisition unit for synchronously acquiring hyperspectral images and laser detection and measurement LiDAR data
- An extraction unit for extracting amplitude features of LiDAR data using a two-dimensional Gabor filter bank to obtain two-dimensional Gabor feature expressions
- the extraction unit is further configured to use a three-dimensional Gabor filter bank to perform amplitude feature extraction on the hyperspectral image and express the three-dimensional Gabor feature;
- a connecting unit configured to connect the two-dimensional Gabor amplitude feature and the three-dimensional Gabor amplitude feature to obtain a target Gabor feature expression
- a dimensionality reduction unit configured to perform dimensionality reduction processing on the target Gabor feature expression and the hyperspectral image by using a principal component analysis algorithm KPCA of a kernel function;
- An acquisition unit configured to obtain a fusion expression feature according to a target Gabor feature expression and a hyperspectral image after the dimensionality reduction process
- a classification unit is configured to perform supervised classification according to the fused expression feature and a support vector machine with a radial basis kernel function RBF kernel.
- a third aspect of the present invention discloses a server, where the server includes:
- a processor coupled to the memory
- the processor calls the executable program code stored in the memory to execute the method according to any one of the first aspects of the present invention.
- the fourth aspect of the present invention discloses a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, wherein the computer program causes a terminal to execute the method according to any one of the first aspect of the present invention. .
- the hyperspectral image and the LiDAR data are collected and stored; the two-dimensional Gabor filter and the three-dimensional Gabor filter are used to extract the amplitude features of the LiDAR data and the hyperspectral image, respectively, to obtain similarity and complementarity.
- Texture features connect the two types of extracted texture features, use KPCA algorithm to extract the features of the connected texture features, connect the extracted features with the original hyperspectral data after dimensionality reduction to obtain the final fusion feature, and use the support Vector machines perform supervised classification.
- the advantage of this method is to use Gabor features to extract the texture features of heterogeneous data, so that the original heterogeneous data can be fused in the texture feature space.
- the feature expression of the effective spectral information of the original hyperspectral image is added. Finally, the spectrum and texture are fused.
- the three major features of elevation and elevation improve the recognition accuracy of ground features.
- FIG. 1 is a schematic flowchart of a method for processing data based on a drone according to an embodiment of the present invention
- FIG. 2 is a schematic flowchart of another UAV-based data processing method disclosed by an embodiment of the present invention.
- FIG. 3 is a schematic structural diagram of a UAV-based data processing device disclosed by an embodiment of the present invention.
- FIG. 4 is a schematic structural diagram of another unmanned aerial vehicle-based data processing device disclosed by an embodiment of the present invention.
- FIG. 5 is a schematic diagram of a physical structure of a UAV-based data processing device disclosed in an embodiment of the present invention.
- the embodiment of the invention discloses a method and a device for data processing, and improves the classification accuracy of a feature by performing a feature fusion of a hyperspectral image and a laser detection and measurement data including the feature geometrical information of the feature. Each of them will be described in detail below.
- the invention is a feature extraction and fusion classification technology and system using a drone hyperspectral image and laser detection and measurement data (Light Detection and Ranging, LiDAR).
- Hyperspectral images obtained by imaging hypersurfaces over hundreds of bands with hyperspectral sensors contain triple information about surface radiation, space, and spectrum, making the identification and classification of surface objects more efficient.
- hyperspectral sensors are susceptible to the influence of clouds.
- clouds the same-spectrum and same-spectrum foreign matter in hyperspectral images are widespread, resulting in low accuracy of classification directly using original hyperspectral images.
- the elevation information contained in it has spatial correlation. It mainly uses two-dimensional spatial feature extraction methods; two-dimensional spatial feature extraction mainly uses filters in different directions to express the characteristics of LiDAR data. Specifically, it first extracts the spatial features in each direction, and then superimposes the spatial features in different directions.
- two-dimensional Gabor and two-dimensional Local Binary Pattern (LBP) are two typical spatial feature extraction methods.
- LBP Local Binary Pattern
- the traditional two-dimensional spatial feature extraction method cannot fully extract its spatial-spectral joint information; the three-dimensional spatial-spectrum feature extraction method examines the spatial-spectral structure relationship between different pixels , Can combine spatial features and spectral features to express hyperspectral images.
- the spatial-spectrum joint feature extraction method makes full use of the spatial, radiative, and spectral information about the ground features in the hyperspectral image, and can obtain identification information that reflects the multi-faceted characteristics of the ground features, which improves the ability to distinguish features.
- 3D Gabor is a typical spatial-spectrum joint feature extraction method. By selecting and fusing a series of 3D Gabor features, representative features reflecting the spatial-spectrum joint structure of hyperspectral images can be obtained.
- KPCA Kernel Principal Component Analysis
- FIG. 1 is a schematic flowchart of a data processing method based on a drone according to an embodiment of the present invention.
- the data processing method may include the following steps.
- the original hyperspectral image and LiDAR data of the ground scene and target are acquired synchronously, and the data is stored in real time. It can be understood that the collected data can be stored locally or distributed.
- a spectral image with a spectral resolution in the order of 10 l is called a hyperspectral image.
- Hyperspectral sensors namely imaging spectrometers, mounted on different space platforms, simultaneously image the target area in the ultraviolet, visible, near-infrared, and mid-infrared regions of the electromagnetic spectrum with dozens to hundreds of continuous and subdivided spectral bands . While obtaining surface image information, it also obtains its spectral information, so that the combination of spectrum and image is achieved. Its biggest feature is the combination of imaging technology and spectral detection technology. While imaging the spatial characteristics of the target, each spatial pixel is dispersed to form dozens or even hundreds of narrow bands for continuous spectral coverage.
- the data formed in this way can be described graphically using "three-dimensional data blocks".
- x and y represent two-dimensional plane pixel information coordinate axes
- the third dimension ( ⁇ axis) is a wavelength information coordinate axis.
- the hyperspectral image combines the image information and spectral information of the sample.
- the image information can reflect the external quality characteristics such as the size, shape, and defects of the sample. Because different components have different spectral absorptions, the image will reflect a certain defect at a particular wavelength, and the spectral information can fully reflect the sample. Differences in internal physical structure and chemical composition.
- the two-dimensional Gabor feature extraction of LiDAR data includes: Let the original LiDAR data image be I LiDAR ⁇ R X ⁇ Y , where X, Y are the spatial dimensions of the image. Convolution operation is performed on the 2D Gabor filter bank generated in step (1) with the image I LiDAR , and an absolute value operation is performed on the result, that is,
- the coordinates of the spatial-spectrum joint domain of a pixel in a multi-band image are (x, y, b), and b represents a certain band of the image.
- the coordinates of the spatial-spectrum joint domain of a pixel in a multi-band image are (x, y, b), and b represents a certain band of the image.
- design four different frequency amplitudes ⁇ f s , s 1,2, ..., 4 ⁇ , 13 different directions
- the three-dimensional Gabor feature extraction of the hyperspectral image includes: setting the original hyperspectral image as I HSI ⁇ R X ⁇ Y ⁇ B , where B is the spectral dimension of the hyperspectral image. Convolution operation is performed on the 3D Gabor filter bank generated in step (2) with the image I HSI , and an absolute value operation is performed on the result, that is,
- the Gabor feature based on KPCA dimensionality reduction is fused with the original hyperspectral image.
- KPCA algorithm has a high spectral dimension, large redundancy between bands, and heterogeneity.
- the dimensions are compressed to K dimensions (K ⁇ B) by using the KPCA algorithm to obtain I KPCA ⁇ R X ⁇ Y ⁇ K and N KPCA ⁇ R X ⁇ Y ⁇ K.
- x i is the i-th feature vector
- y i is the class label of x i
- ⁇ i ,, b are the desired model parameters.
- the hyperspectral image and LiDAR data are collected and stored; the two-dimensional Gabor filter and the three-dimensional Gabor filter are used to extract the amplitude features of the LiDAR data and the hyperspectral image, respectively.
- To obtain similar and complementary texture features connect the two types of extracted texture features, use KPCA algorithm to extract the texture features after connection, and connect the extracted features with the original hyperspectral data after dimensionality reduction
- the final fusion features are obtained and supervised classification using support vector machines.
- the advantage of this method is to use Gabor features to extract the texture features of heterogeneous data, so that the original heterogeneous data can be fused in the texture feature space.
- the feature expression of the effective spectral information of the original hyperspectral image is added. Finally, the spectrum and texture are fused.
- the three major features of elevation and elevation improve the recognition accuracy of ground features.
- FIG. 2 is a schematic flowchart of a data processing method based on a drone according to an embodiment of the present invention. As shown in FIG. 2, the method may include the following steps.
- the fusion process includes: connecting the two-dimensional Gabor amplitude feature and the three-dimensional Gabor amplitude feature to obtain a target Gabor feature expression (that is, a texture feature expression);
- S205 Perform supervised classification according to the fusion expression feature and a support vector machine with a radial basis kernel function RBF kernel.
- the Gabor feature can be used to extract the texture features of the heterogeneous data, so that the original heterogeneous data can be fused in the texture feature space.
- the feature expression of the effective spectral information of the original hyperspectral image is added.
- FIG. 3 is a schematic structural diagram of a UAV-based data processing device disclosed in an embodiment of the present invention.
- the structure described in FIG. 3 may include:
- An acquisition unit 301 which is used for synchronously acquiring hyperspectral images and laser detection and measurement LiDAR data;
- An extraction unit 302 configured to perform amplitude feature extraction on LiDAR data using a two-dimensional Gabor filter bank to obtain a two-dimensional Gabor feature expression
- the extraction unit 302 is further configured to use a three-dimensional Gabor filter bank to perform amplitude feature extraction on the hyperspectral image to express the three-dimensional Gabor feature;
- a connecting unit 303 configured to connect the two-dimensional Gabor amplitude feature and the three-dimensional Gabor amplitude feature to obtain a target Gabor feature expression
- a dimensionality reduction unit 304 configured to perform a dimensionality reduction process on the target Gabor feature expression and the hyperspectral image by using a principal component analysis algorithm KPCA of a kernel function;
- An obtaining unit 305 configured to obtain a fusion expression feature according to the target Gabor feature expression and the hyperspectral image after the dimensionality reduction process
- a classification unit 306 is configured to perform supervised classification according to the fused expression features and a support vector machine with a radial basis kernel function RBF kernel.
- FIG. 3 can be used to execute the methods described in S101-S107.
- FIG. 4 is a schematic structural diagram of another UAV-based data processing device disclosed by an embodiment of the present invention.
- the apparatus shown in FIG. 4 includes:
- An acquisition unit 401 which is used to realize synchronous data acquisition and storage of hyperspectral images and LiDAR data through a drone;
- a generating unit 402 configured to generate a two-dimensional Gabor filter and a three-dimensional Gabor filter
- An extraction unit 403, configured to perform Gabor feature extraction on the LiDAR data and the hyperspectral image using the generated two-dimensional and three-dimensional Gabor filters;
- a fusion unit 404 configured to fuse the extracted Gabor features to obtain a texture feature expression of a feature
- a dimensionality reduction unit 405 is configured to perform a dimensionality reduction processing on the target Gabor feature expression and the hyperspectral image by using a principal component analysis algorithm KPCA of a kernel function, and according to the target Gabor feature expression and hyperspectral after the dimensionality reduction processing.
- a classification unit 406 is configured to perform supervised classification according to the fused expression features and a support vector machine with a radial basis kernel function RBF kernel.
- terminal described in FIG. 4 can execute the methods described in S201-S205.
- FIG. 5 is a schematic structural diagram of another unmanned aerial vehicle-based data processing device disclosed in an embodiment of the present invention.
- the device may include: at least one processor 510, such as a CPU, and a memory. 520, at least one communication bus 530, an input device 540, and an output device 550.
- the communication bus 530 is used to implement a communication connection between these components.
- the memory 520 may be a high-speed RAM memory, or may be a non-volatile memory (non-volatile memory), for example, at least one magnetic disk memory.
- the memory 520 may optionally be at least one storage device located far from the foregoing processor 510.
- the processor 510 stores a set of program codes, and the processor 510 calls the program codes stored in the memory 520 for executing the methods shown in S101 to S107, and may also execute the methods shown in steps S201 to S205.
- a computer-readable storage medium stores a computer program.
- the processor executes the methods shown in lines S101 to S107.
- the method shown in steps S201 to S205 may also be performed.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Theoretical Computer Science (AREA)
- Image Analysis (AREA)
Abstract
Description
Claims (10)
- 一种基于无人机的数据处理的方法,其特征在于,所述方法包括:同步采集高光谱图像和激光探测与测量LiDAR数据;利用二维Gabor滤波器组对LiDAR数据进行幅值特征提取以获取二维Gabor特征表达;利用三维Gabor滤波器组对所述高光谱图像进行幅值特征提取以三维Gabor特征表达;将所述二维Gabor幅值特征与所述三维Gabor幅值特征进行连接以获取目标Gabor特征表达;利用核函数的主成分分析算法KPCA分别对所述目标Gabor特征表达和所述高光谱图像进行降维处理;根据经过降维处理后的目标Gabor特征表达和高光谱图像获取融合表达特征;根据所述融合表达特征和基于带径向基核函数RBF核的支持向量机进行监督分类。
- 根据权利要求1所述的方法,其特征在于,所述LiDAR数据图像为I LiDAR∈R X×Y,其中X,Y为图像的空间维度;所述二维Gabor滤波器组是根据4个不同频率{u m,m=1,2,...,4}、6个不同方向{θ n,n=1,2,...,6}以及第一预设公式获取的;其中,第一公式为:其中,z=x cosθ n+y sinθ n;所述利用二维Gabor滤波器组对LiDAR数据进行幅值特征提取以获取二维Gabor特征表达,包括:将所述二维Gabor滤波器组与图像I LiDAR进行卷积操作,并对结果取绝对值运算以得到24个二维Gabor幅值特征;将所述24个二维Gabor幅值特征进行连接以得到LiDAR数据的二维Gabor特征表达。
- 根据权利要求2所述的方法,其特征在于,所述高光谱图像为I HSI∈R X×Y×B,其中B为高光谱图像的光谱维度,其中X,Y为图像的空间维度;其中,第二公式为:其中,u=f ssinφ tcosθ t,v=f ssinφ tsinθ t,w=f scosφ t;所述利用三维Gabor滤波器组对所述高光谱图像进行幅值特征提取以三维Gabor特征表达,包括:将所述二维Gabor滤波器组与图像I HSI进行卷积操作,并对结果取绝对值运算以得到52个三维Gabor幅值特征;将所述52个三维Gabor幅值特征进行连接以得到高光谱图像的三维Gabor特征表达。
- 一种基于无人机的数据处理的装置,其特征在于,所述装置包括:采集单元,用于同步采集高光谱图像和激光探测与测量LiDAR数据;提取单元,用于利用二维Gabor滤波器组对LiDAR数据进行幅值特征提取以获取二维Gabor特征表达;所述提取单元,还用于利用三维Gabor滤波器组对所述高光谱图像进行幅 值特征提取以三维Gabor特征表达;连接单元,用于将所述二维Gabor幅值特征与所述三维Gabor幅值特征进行连接以获取目标Gabor特征表达;降维单元,用于利用核函数的主成分分析算法KPCA分别对所述目标Gabor特征表达和所述高光谱图像进行降维处理;获取单元,用于根据经过降维处理后的目标Gabor特征表达和高光谱图像获取融合表达特征;分类单元,用于根据所述融合表达特征和基于带径向基核函数RBF核的支持向量机进行监督分类。
- 根据权利要求7所述的装置,其特征在于,所述高光谱图像为I HSI∈R X×Y×B,其中B为高光谱图像的光谱维度,其中X,Y为图像的空间维度;其中,第二公式为:其中,u=f ssinφ tcosθ t,v=f ssinφ tsinθ t,w=f scosφ t;所述提取单元,具体用于:将所述二维Gabor滤波器组与图像I HSI进行卷积操作,并对结果取绝对值运算以得到52个三维Gabor幅值特征;将所述52个三维Gabor幅值特征进行连接以得到高光谱图像的三维Gabor特征表达。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CN2018/093173 WO2020000271A1 (zh) | 2018-06-27 | 2018-06-27 | 一种基于无人机的数据处理的方法及装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CN2018/093173 WO2020000271A1 (zh) | 2018-06-27 | 2018-06-27 | 一种基于无人机的数据处理的方法及装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2020000271A1 true WO2020000271A1 (zh) | 2020-01-02 |
Family
ID=68985546
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2018/093173 WO2020000271A1 (zh) | 2018-06-27 | 2018-06-27 | 一种基于无人机的数据处理的方法及装置 |
Country Status (1)
Country | Link |
---|---|
WO (1) | WO2020000271A1 (zh) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113658063A (zh) * | 2021-07-28 | 2021-11-16 | 中国科学院西安光学精密机械研究所 | 一种用于aotf型光谱成像仪的自动数据修正方法及系统 |
CN113850572A (zh) * | 2021-11-29 | 2021-12-28 | 泰德网聚(北京)科技股份有限公司 | 一种数据集约化管理转分发的方法 |
CN114187479A (zh) * | 2021-12-28 | 2022-03-15 | 河南大学 | 一种基于空谱特征联合的高光谱图像分类方法 |
CN114511781A (zh) * | 2022-01-28 | 2022-05-17 | 中国人民解放军空军军医大学 | 无人机搭载多光谱相机对伪装人员识别的方法、装置及介质 |
CN114529503A (zh) * | 2021-12-17 | 2022-05-24 | 南京邮电大学 | 改进Gabor与HOG的自适应加权多特征融合的植物叶片识别方法 |
CN114637876A (zh) * | 2022-05-19 | 2022-06-17 | 中国电子科技集团公司第五十四研究所 | 基于矢量地图特征表达的大场景无人机图像快速定位方法 |
CN114972294A (zh) * | 2022-06-13 | 2022-08-30 | 南京大学 | 一种基于Gabor滤波器的肺部超声图像条纹特征的识别方法 |
CN117809193A (zh) * | 2024-03-01 | 2024-04-02 | 江西省林业科学院 | 一种无人机高光谱影像与地物高光谱数据融合方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104036289A (zh) * | 2014-06-05 | 2014-09-10 | 哈尔滨工程大学 | 一种基于空间-光谱特征和稀疏表达的高光谱图像分类方法 |
CN106022391A (zh) * | 2016-05-31 | 2016-10-12 | 哈尔滨工业大学深圳研究生院 | 一种高光谱图像特征的并行提取与分类方法 |
CN106529484A (zh) * | 2016-11-16 | 2017-03-22 | 哈尔滨工业大学 | 基于类指定多核学习的光谱和激光雷达数据联合分类方法 |
CN107451614A (zh) * | 2017-08-01 | 2017-12-08 | 西安电子科技大学 | 基于空间坐标与空谱特征融合的高光谱分类方法 |
CN107480620A (zh) * | 2017-08-04 | 2017-12-15 | 河海大学 | 基于异构特征融合的遥感图像自动目标识别方法 |
-
2018
- 2018-06-27 WO PCT/CN2018/093173 patent/WO2020000271A1/zh active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104036289A (zh) * | 2014-06-05 | 2014-09-10 | 哈尔滨工程大学 | 一种基于空间-光谱特征和稀疏表达的高光谱图像分类方法 |
CN106022391A (zh) * | 2016-05-31 | 2016-10-12 | 哈尔滨工业大学深圳研究生院 | 一种高光谱图像特征的并行提取与分类方法 |
CN106529484A (zh) * | 2016-11-16 | 2017-03-22 | 哈尔滨工业大学 | 基于类指定多核学习的光谱和激光雷达数据联合分类方法 |
CN107451614A (zh) * | 2017-08-01 | 2017-12-08 | 西安电子科技大学 | 基于空间坐标与空谱特征融合的高光谱分类方法 |
CN107480620A (zh) * | 2017-08-04 | 2017-12-15 | 河海大学 | 基于异构特征融合的遥感图像自动目标识别方法 |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113658063A (zh) * | 2021-07-28 | 2021-11-16 | 中国科学院西安光学精密机械研究所 | 一种用于aotf型光谱成像仪的自动数据修正方法及系统 |
CN113658063B (zh) * | 2021-07-28 | 2023-05-26 | 中国科学院西安光学精密机械研究所 | 一种用于aotf型光谱成像仪的自动数据修正方法及系统 |
CN113850572A (zh) * | 2021-11-29 | 2021-12-28 | 泰德网聚(北京)科技股份有限公司 | 一种数据集约化管理转分发的方法 |
CN114529503A (zh) * | 2021-12-17 | 2022-05-24 | 南京邮电大学 | 改进Gabor与HOG的自适应加权多特征融合的植物叶片识别方法 |
CN114187479A (zh) * | 2021-12-28 | 2022-03-15 | 河南大学 | 一种基于空谱特征联合的高光谱图像分类方法 |
CN114511781A (zh) * | 2022-01-28 | 2022-05-17 | 中国人民解放军空军军医大学 | 无人机搭载多光谱相机对伪装人员识别的方法、装置及介质 |
CN114637876A (zh) * | 2022-05-19 | 2022-06-17 | 中国电子科技集团公司第五十四研究所 | 基于矢量地图特征表达的大场景无人机图像快速定位方法 |
CN114972294A (zh) * | 2022-06-13 | 2022-08-30 | 南京大学 | 一种基于Gabor滤波器的肺部超声图像条纹特征的识别方法 |
CN117809193A (zh) * | 2024-03-01 | 2024-04-02 | 江西省林业科学院 | 一种无人机高光谱影像与地物高光谱数据融合方法 |
CN117809193B (zh) * | 2024-03-01 | 2024-05-17 | 江西省林业科学院 | 一种无人机高光谱影像与地物高光谱数据融合方法 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2020000271A1 (zh) | 一种基于无人机的数据处理的方法及装置 | |
Chen et al. | An end-to-end shape modeling framework for vectorized building outline generation from aerial images | |
US11244197B2 (en) | Fast and robust multimodal remote sensing image matching method and system | |
Paisitkriangkrai et al. | Semantic labeling of aerial and satellite imagery | |
US20170294027A1 (en) | Remote determination of quantity stored in containers in geographical region | |
Liu et al. | Data analysis in visual power line inspection: An in-depth review of deep learning for component detection and fault diagnosis | |
Zhang et al. | RCNN-based foreign object detection for securing power transmission lines (RCNN4SPTL) | |
WO2019047248A1 (zh) | 高光谱遥感图像的特征提取方法及装置 | |
CN109101977B (zh) | 一种基于无人机的数据处理的方法及装置 | |
Tatar et al. | A robust object-based shadow detection method for cloud-free high resolution satellite images over urban areas and water bodies | |
EP3751514B1 (en) | Method and system for impurity detection using multi-modal imaging | |
Polewski et al. | A voting-based statistical cylinder detection framework applied to fallen tree mapping in terrestrial laser scanning point clouds | |
Chawda et al. | Extracting building footprints from satellite images using convolutional neural networks | |
Blomley et al. | 3D semantic labeling of ALS point clouds by exploiting multi-scale, multi-type neighborhoods for feature extraction | |
Aryal et al. | Mobile hyperspectral imaging for material surface damage detection | |
Parmehr et al. | Mapping urban tree canopy cover using fused airborne lidar and satellite imagery data | |
Yang et al. | Infrared and visible image fusion based on infrared background suppression | |
Jing et al. | Island road centerline extraction based on a multiscale united feature | |
Vakalopoulou et al. | Simultaneous registration, segmentation and change detection from multisensor, multitemporal satellite image pairs | |
Shit et al. | An encoder‐decoder based CNN architecture using end to end dehaze and detection network for proper image visualization and detection | |
Teo et al. | Object-based land cover classification using airborne lidar and different spectral images | |
Gupta | A survey of techniques and applications for real time image processing | |
Baiocchi et al. | Artificial neural networks exploiting point cloud data for fragmented solid objects classification | |
Ouerghemmi et al. | Urban vegetation mapping by airborne hyperspetral imagery; feasibility and limitations | |
Chen et al. | Spectral Query Spatial: Revisiting the Role of Center Pixel in Transformer for Hyperspectral Image Classification |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 18923885 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 18923885 Country of ref document: EP Kind code of ref document: A1 |
|
32PN | Ep: public notification in the ep bulletin as address of the adressee cannot be established |
Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 08/04/2021) |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 18923885 Country of ref document: EP Kind code of ref document: A1 |