scholarly journals Remote sensing data retouching based on image inpainting algorithms in the forgery generation problem

2020 ◽  
Vol 44 (5) ◽  
pp. 763-771
Author(s):  
A.V. Kuznetsov ◽  
M.V. Gashnikov

We investigate image retouching algorithms for generating forgery Earth remote sensing data. We provide an overview of existing neural network solutions in the field of generation and inpainting of remote sensing images. To retouch Earth remote sensing data, we use imageinpainting algorithms based on convolutional neural networks and generative-adversarial neural networks. We pay special attention to a generative neural network with a separate contour prediction block that includes two series-connected generative-adversarial subnets. The first subnet inpaints contours of the image within the retouched area. The second subnet uses the inpainted contours to generate the resulting retouch area. As a basis for comparison, we use exemplar-based algorithms of image inpainting. We carry out computational experiments to study the effectiveness of these algorithms when retouching natural data of remote sensing of various types. We perform a comparative analysis of the quality of the algorithms considered, depending on the type, shape and size of the retouched objects and areas. We give qualitative and quantitative characteristics of the efficiency of the studied image inpainting algorithms when retouching Earth remote sensing data. We experimentally prove the advantage of generative-competitive neural networks in the construction of forgery remote sensing data.

Author(s):  
M. P. Romanchuk

An important task in the processing of Earth remote sensing data is the automation of the decoding process of aerospace images, in particular the detection and recognition of objects in military decoding. In the article the directions of automation of decryption of photos are considered and promising from them is selected, which is based on the use of neural networks of deep learning, and also analyzed the technical problems that arise during the creation of algorithms and the deployment of trained models on a variety of mobile devices. The important role of deep-instruction software frameworks in the process of training of neural network models is aimed at facilitating development and deployment. The changes in the popularity of software frameworks in recent years have been analyzed and the need to analyze their dynamically changing capabilities has been analyzed. The most widely used software frameworks for the implementation of deep learning approaches, their advantages and disadvantages for solving tasks of thematic decryption on accessible computational resources are explored. The types of computational graphs, which use the software of deep learning, and programming languages, with the help of which it is allowed to create and deploy models of neural networks are considered. The analysis of the frameworks according to selected criteria was performed: distributed execution, architecture optimization, reflection of the learning process, joint support and portability. As a result, the software framework to be used in conducting research is highlighted, and the conclusion is drawn about the predominant framework for industrial use in the course of in-depth training of the neural network for the processing of Earth remote sensing data.


2021 ◽  
Vol 3 ◽  
pp. 180-185
Author(s):  
Y. M. Kenzhegaliyev ◽  
◽  
◽  

The goal -is to explore ways of using Earth remote sensing data for efficient land use. Methods - detailed information on current location of certain types of agricultural crops in the study areas has been summarized, which opens up opportunities for the effective use of cultivated areas. It was revealed that the basis of the principle of the method under consideration is the relationship between the state and structure of vegetation types with its reflective ability. It has been determined that information on the spectral reflective property of the vegetation cover in the future can help replace more laborious methods of laboratory analysis. For classification of farmland, satellite images of medium spatial resolution with a combination of channels in natural colors were selected. Results - a method for identifying agricultural plants by classification according to the maximum likelihood algorithm was considered. The commonly used complexes of geoinformation software products with modules for special image processing allow displaying indicators in the form of raster images. It is shown that the use of Earth remote sensing data is the most relevant solution in the field of crop recognition and makes it possible to simplify the implementation of such types of work as the analysis of the intensity of land use, the assessment of the degree of pollution with weeds and determination of crop productivity. Conclusions - the research results given in the article indicate that timely information on the current location of certain types of agricultural crops in the studied territories significantly simplifies the implementation of the tasks and increases the resource potential of agricultural lands. In turn, the timing of the survey and the state of environment affect the spectral reflectivity of vegetation.


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