6 research outputs found

    ΠŸΡ€ΠΎΠ³Ρ€Π°ΠΌΠΌΠ½ΠΎΠ΅ обСспСчСниС для Π°Π²Ρ‚ΠΎΠΌΠ°Ρ‚ΠΈΠ·ΠΈΡ€ΠΎΠ²Π°Π½Π½ΠΎΠ³ΠΎ распознавания ΠΈ ΠΎΡ†ΠΈΡ„Ρ€ΠΎΠ²ΠΊΠΈ Π°Ρ€Ρ…ΠΈΠ²Π½Ρ‹Ρ… Π΄Π°Π½Π½Ρ‹Ρ… оптичСских наблюдСний полярных сияний

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    One of the main tools for recording auroras is the optical observation of the sky in automatic mode using all-sky cameras. The results of observations are recorded in special mnemonic tables, ascaplots. Ascaplots provide daily information on the presence or absence of cloud cover and auroras in various parts of the sky and are traditionally used to study the daily distribution of auroras in a given spatial region, as well as to calculate the probability of their observation in other regions in accordance with the level of geomagnetic activity. At the same time, the processing of ascaplots is currently carried out manually, which is associated with significant time costs and a high proportion of errors due to the human factor. To increase the efficiency of ascaplot processing, we propose an approach that automates the recognition and digitization of data from optical observations of auroras. A formalization of the ascaplot structure is proposed, which is used to process the ascaplot image, extract the corresponding observation results, and form the resulting data set. The approach involves the use of machine vision algorithms and the use of a specialized mask - a debug image for digitization, which is a color image in which the general position of the ascaplot cells is specified. The proposed approach and the corresponding algorithms are implemented in the form of software that provides recognition and digitization of archival data from optical observations of auroras. The solution is a single-user desktop software that allows the user to convert ascaplot images into tables in batch mode, available for further processing and analysis. The results of the computational experiments have shown that the use of the proposed software will make it possible to avoid errors in the digitization of ascaplots, on the one hand, and significantly increase the speed of the corresponding computational operations, on the other. Taken together, this will improve the efficiency of processing ascaplots and conducting research in the relevant area.Одним ΠΈΠ· основных инструмСнтов рСгистрации полярных сияний являСтся оптичСскоС наблюдСниС нСбосвода Π² автоматичСском Ρ€Π΅ΠΆΠΈΠΌΠ΅ с ΠΏΠΎΠΌΠΎΡ‰ΡŒΡŽ ΠΊΠ°ΠΌΠ΅Ρ€ всСго Π½Π΅Π±Π°. Π Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹ наблюдСний Ρ„ΠΈΠΊΡΠΈΡ€ΡƒΡŽΡ‚ΡΡ Π² ΡΠΏΠ΅Ρ†ΠΈΠ°Π»ΡŒΠ½Ρ‹Ρ… мнСмоничСских Ρ‚Π°Π±Π»ΠΈΡ†Π°Ρ…, аскаплотах. Аскаплоты ΠΏΡ€Π΅Π΄ΠΎΡΡ‚Π°Π²Π»ΡΡŽΡ‚ ΡΡƒΡ‚ΠΎΡ‡Π½ΡƒΡŽ ΠΈΠ½Ρ„ΠΎΡ€ΠΌΠ°Ρ†ΠΈΡŽ ΠΎ Π½Π°Π»ΠΈΡ‡ΠΈΠΈ ΠΈΠ»ΠΈ отсутствии ΠΎΠ±Π»Π°Ρ‡Π½ΠΎΠ³ΠΎ ΠΏΠΎΠΊΡ€ΠΎΠ²Π° ΠΈ полярных сияний Π² Ρ€Π°Π·Π»ΠΈΡ‡Π½Ρ‹Ρ… частях нСбосвода ΠΈ Ρ‚Ρ€Π°Π΄ΠΈΡ†ΠΈΠΎΠ½Π½ΠΎ ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΡƒΡŽΡ‚ΡΡ для исслСдования суточного распрСдСлСния полярных сияний Π² Π·Π°Π΄Π°Π½Π½ΠΎΠΌ Ρ€Π΅Π³ΠΈΠΎΠ½Π΅, Π° Ρ‚Π°ΠΊΠΆΠ΅ для расчСта вСроятности ΠΈΡ… наблюдСния Π² Π΄Ρ€ΡƒΠ³ΠΈΡ… Ρ€Π΅Π³ΠΈΠΎΠ½Π°Ρ… Π² соотвСтствии с ΡƒΡ€ΠΎΠ²Π½Π΅ΠΌ Π³Π΅ΠΎΠΌΠ°Π³Π½ΠΈΡ‚Π½ΠΎΠΉ активности. ΠžΠ±Ρ€Π°Π±ΠΎΡ‚ΠΊΠ° аскаплотов Π² настоящСС врСмя осущСствляСтся Π²Ρ€ΡƒΡ‡Π½ΡƒΡŽ, Ρ‡Ρ‚ΠΎ сопряТСно с сущСствСнными Π²Ρ€Π΅ΠΌΠ΅Π½Π½Ρ‹ΠΌΠΈ Π·Π°Ρ‚Ρ€Π°Ρ‚Π°ΠΌΠΈ ΠΈ высокой Π΄ΠΎΠ»Π΅ΠΉ ошибок, Π²ΠΎΠ·Π½ΠΈΠΊΠ°ΡŽΡ‰ΠΈΡ… ΠΏΠΎ ΠΏΡ€ΠΈΡ‡ΠΈΠ½Π΅ чСловСчСского Ρ„Π°ΠΊΡ‚ΠΎΡ€Π°. Для ΠΏΠΎΠ²Ρ‹ΡˆΠ΅Π½ΠΈΡ эффСктивности ΠΎΠ±Ρ€Π°Π±ΠΎΡ‚ΠΊΠΈ аскаплотов Π°Π²Ρ‚ΠΎΡ€Π°ΠΌΠΈ ΠΏΡ€Π΅Π΄Π»ΠΎΠΆΠ΅Π½ ΠΏΠΎΠ΄Ρ…ΠΎΠ΄, ΠΎΠ±Π΅ΡΠΏΠ΅Ρ‡ΠΈΠ²Π°ΡŽΡ‰ΠΈΠΉ Π°Π²Ρ‚ΠΎΠΌΠ°Ρ‚ΠΈΠ·Π°Ρ†ΠΈΡŽ распознавания ΠΈ ΠΎΡ†ΠΈΡ„Ρ€ΠΎΠ²ΠΊΠΈ Π΄Π°Π½Π½Ρ‹Ρ… оптичСских наблюдСний полярных сияний. ΠŸΡ€Π΅Π΄Π»ΠΎΠΆΠ΅Π½Π° формализация структуры аскаплота, примСняСмая для ΠΎΠ±Ρ€Π°Π±ΠΎΡ‚ΠΊΠΈ Π΅Π³ΠΎ изобраТСния, Π° Ρ‚Π°ΠΊΠΆΠ΅ ΠΈΠ·Π²Π»Π΅Ρ‡Π΅Π½ΠΈΠ΅ ΡΠΎΠΎΡ‚Π²Π΅Ρ‚ΡΡ‚Π²ΡƒΡŽΡ‰ΠΈΡ… Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚ΠΎΠ² наблюдСний ΠΈ Ρ„ΠΎΡ€ΠΌΠΈΡ€ΠΎΠ²Π°Π½ΠΈΠ΅ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚ΠΈΡ€ΡƒΡŽΡ‰Π΅Π³ΠΎ Π½Π°Π±ΠΎΡ€Π° Π΄Π°Π½Π½Ρ‹Ρ…. ΠŸΠΎΠ΄Ρ…ΠΎΠ΄ прСдусматриваСт использованиС Π°Π»Π³ΠΎΡ€ΠΈΡ‚ΠΌΠΎΠ² машинного зрСния (Π² частности, Π² Π΄Π°Π½Π½ΠΎΠΌ случаС ΠΈΠΌΠ΅Π΅Ρ‚ мСсто ΠΏΡ€ΠΈΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ Π°Π»Π³ΠΎΡ€ΠΈΡ‚ΠΌΠ° классификации ΠΏΠΎ ΠΏΡ€Π°Π²ΠΈΠ»Π°ΠΌ) ΠΈ ΠΏΡ€ΠΈΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ спСциализированной маски – ΠΎΡ‚Π»Π°Π΄ΠΎΡ‡Π½ΠΎΠ³ΠΎ изобраТСния для ΠΎΡ†ΠΈΡ„Ρ€ΠΎΠ²ΠΊΠΈ, ΠΏΡ€Π΅Π΄ΡΡ‚Π°Π²Π»ΡΡŽΡ‰Π΅Π³ΠΎ собой Ρ†Π²Π΅Ρ‚Π½ΠΎΠ΅ ΠΈΠ·ΠΎΠ±Ρ€Π°ΠΆΠ΅Π½ΠΈΠ΅, Π² ΠΊΠΎΡ‚ΠΎΡ€ΠΎΠΌ Π·Π°Π΄Π°Π½ΠΎ ΠΎΠ±Ρ‰Π΅Π΅ полоТСния ячССк аскаплотов. ΠŸΡ€Π΅Π΄Π»ΠΎΠΆΠ΅Π½Π½Ρ‹ΠΉ ΠΏΠΎΠ΄Ρ…ΠΎΠ΄ ΠΈ ΡΠΎΠΎΡ‚Π²Π΅Ρ‚ΡΡ‚Π²ΡƒΡŽΡ‰ΠΈΠ΅ Π°Π»Π³ΠΎΡ€ΠΈΡ‚ΠΌΡ‹ Ρ€Π΅Π°Π»ΠΈΠ·ΠΎΠ²Π°Π½Ρ‹ Π² Ρ„ΠΎΡ€ΠΌΠ΅ ΠΏΡ€ΠΎΠ³Ρ€Π°ΠΌΠΌΠ½ΠΎΠ³ΠΎ обСспСчСния для распознавания ΠΈ ΠΎΡ†ΠΈΡ„Ρ€ΠΎΠ²ΠΊΠΈ Π°Ρ€Ρ…ΠΈΠ²Π½Ρ‹Ρ… Π΄Π°Π½Π½Ρ‹Ρ… оптичСских наблюдСний полярных сияний. РСшСниС прСдставляСт собой ΠΎΠ΄Π½ΠΎΠΏΠΎΠ»ΡŒΠ·ΠΎΠ²Π°Ρ‚Π΅Π»ΡŒΡΠΊΠΎΠ΅ Π½Π°ΡΡ‚ΠΎΠ»ΡŒΠ½ΠΎΠ΅ ΠΏΡ€ΠΎΠ³Ρ€Π°ΠΌΠΌΠ½ΠΎΠ΅ обСспСчСниС, ΠΏΠΎΠ·Π²ΠΎΠ»ΡΡŽΡ‰Π΅Π΅ ΠΏΠΎΠ»ΡŒΠ·ΠΎΠ²Π°Ρ‚Π΅Π»ΡŽ Π² ΠΏΠ°ΠΊΠ΅Ρ‚Π½ΠΎΠΌ Ρ€Π΅ΠΆΠΈΠΌΠ΅ Π²Ρ‹ΠΏΠΎΠ»Π½ΡΡ‚ΡŒ ΠΏΡ€Π΅ΠΎΠ±Ρ€Π°Π·ΠΎΠ²Π°Π½ΠΈΠ΅ ΠΈΠ·ΠΎΠ±Ρ€Π°ΠΆΠ΅Π½ΠΈΠΉ аскаплотов Π² Ρ‚Π°Π±Π»ΠΈΡ†Ρ‹, доступныС для ΠΏΠΎΡΠ»Π΅Π΄ΡƒΡŽΡ‰Π΅ΠΉ ΠΎΠ±Ρ€Π°Π±ΠΎΡ‚ΠΊΠΈ ΠΈ Π°Π½Π°Π»ΠΈΠ·Π°. Π Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹ ΠΏΡ€ΠΎΠ²Π΅Π΄Π΅Π½Π½Ρ‹Ρ… Π²Ρ‹Ρ‡ΠΈΡΠ»ΠΈΡ‚Π΅Π»ΡŒΠ½Ρ‹Ρ… экспСримСнтов ΠΏΠΎΠΊΠ°Π·Π°Π»ΠΈ, Ρ‡Ρ‚ΠΎ ΠΏΡ€ΠΈΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ ΠΏΡ€Π΅Π΄Π»ΠΎΠΆΠ΅Π½Π½ΠΎΠ³ΠΎ ΠΏΡ€ΠΎΠ³Ρ€Π°ΠΌΠΌΠ½ΠΎΠ³ΠΎ обСспСчСния ΠΏΠΎΠ·Π²ΠΎΠ»ΠΈΡ‚ ΠΈΠ·Π±Π΅ΠΆΠ°Ρ‚ΡŒ ошибок ΠΏΡ€ΠΈ ΠΎΡ†ΠΈΡ„Ρ€ΠΎΠ²ΠΊΠ΅ аскаплотов, с ΠΎΠ΄Π½ΠΎΠΉ стороны, ΠΈ сущСствСнно ΠΏΠΎΠ²Ρ‹ΡΠΈΡ‚ΡŒ ΡΠΊΠΎΡ€ΠΎΡΡ‚ΡŒ ΡΠΎΠΎΡ‚Π²Π΅Ρ‚ΡΡ‚Π²ΡƒΡŽΡ‰ΠΈΡ… Π²Ρ‹Ρ‡ΠΈΡΠ»ΠΈΡ‚Π΅Π»ΡŒΠ½Ρ‹Ρ… ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΠΉ, с Π΄Ρ€ΡƒΠ³ΠΎΠΉ. Π’ совокупности это ΠΏΠΎΠ·Π²ΠΎΠ»ΠΈΡ‚ ΠΏΠΎΠ²Ρ‹ΡΠΈΡ‚ΡŒ ΡΡ„Ρ„Π΅ΠΊΡ‚ΠΈΠ²Π½ΠΎΡΡ‚ΡŒ ΠΎΠ±Ρ€Π°Π±ΠΎΡ‚ΠΊΠΈ аскаплотов ΠΈ провСдСния исслСдований Π² ΡΠΎΠΎΡ‚Π²Π΅Ρ‚ΡΡ‚Π²ΡƒΡŽΡ‰Π΅ΠΉ области

    Robust Table Detection and Structure Recognition from Heterogeneous Document Images

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    We introduce a new table detection and structure recognition approach named RobusTabNet to detect the boundaries of tables and reconstruct the cellular structure of each table from heterogeneous document images. For table detection, we propose to use CornerNet as a new region proposal network to generate higher quality table proposals for Faster R-CNN, which has significantly improved the localization accuracy of Faster R-CNN for table detection. Consequently, our table detection approach achieves state-of-the-art performance on three public table detection benchmarks, namely cTDaR TrackA, PubLayNet and IIIT-AR-13K, by only using a lightweight ResNet-18 backbone network. Furthermore, we propose a new split-and-merge based table structure recognition approach, in which a novel spatial CNN based separation line prediction module is proposed to split each detected table into a grid of cells, and a Grid CNN based cell merging module is applied to recover the spanning cells. As the spatial CNN module can effectively propagate contextual information across the whole table image, our table structure recognizer can robustly recognize tables with large blank spaces and geometrically distorted (even curved) tables. Thanks to these two techniques, our table structure recognition approach achieves state-of-the-art performance on three public benchmarks, including SciTSR, PubTabNet and cTDaR TrackB2-Modern. Moreover, we have further demonstrated the advantages of our approach in recognizing tables with complex structures, large blank spaces, as well as geometrically distorted or even curved shapes on a more challenging in-house dataset.Comment: Accepted by Pattern Recognition on 27 Aug. 202

    Improving data management through automatic information extraction model in ontology for road asset management

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    lRoads are a critical component of transportation infrastructure, and their effective maintenance is paramount in ensuring their continued functionality and safety. This research proposes a novel information management approach based on state-of-the-art deep learning models and ontologies. The approach can automatically extract, integrate, complete, and search for project knowledge buried in unstructured text documents. The approach on the one hand facilitates implementation of modern management approaches, i.e., advanced working packaging to delivery success road management projects, on the other hand improves information management practices in the construction industry
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