Photo Coverage Research Articles

ASSESSMENT OF ACCURACY LEVELS AND PRECISION BASE MAP GEOMETRY FROM PROCESSING RESULTS AERIAL PHOTOGRAPHY DATA FOR AT MINING SECTOR UTILIZATION

Orthophoto is an aerial photo with a photographic recording process with the support of a detector or a film detector that has corrected its geometric errors using Digital Elevation Model (DEM) data. DEM data is a digital elevation model that represents the surface topography and Ground Control Point (GCP) or ground control points as a location point that is known or identified in real space on the ground surface. This can be used for mapping purposes without any scale inconsistencies throughout the photo coverage, and for getting a high-resolution scale map, that is corrected referring to geometric accuracy, which aims to be utilized in the mining sector as a base map on a large scale. From the results of the aerial photo data processing, the geometric accuracy of class I is at a scale of 1:500, which is used as a base map for the Mining Permit.

A Utility Model for Photo Selection in Mobile Crowdsensing

Existing mobile photo crowdsensing approaches focus on the participant-to-server photo pre-selection, i.e., reducing the photo redundancy from participants to a server. The server may still receive plenty of photos for a target area. Yet, another important problem is to select a proper photo subset of an area from the server to a requester. This is a challenging problem because the selected subset with a small size should attain both coverage on the PoIs - Points of Interest (i.e., photo coverage of the area) and quality on the views (i.e., view quality). In this paper, we propose a novel and generic server-to-requester photo selection approach even when there are neither photo shooting direction information nor reference photos. A utility model is designed to measure photo merits of coverage and quality by exploiting photos' spatial distribution and visual representativeness. We present two photo selection schemes, basic and PoI number-aware, to maximize the photo selection utility with multiple levels of granularity. Experimental results on real-world datasets show that our basic scheme outperforms the baselines by an average of 33% and 18.7% on photo coverage and view quality, respectively. Our PoI number-aware scheme can yield an additionally 44.8 percent improvement on the photo coverage performance.

الأطر المرئية للأحداث الإرهابية فى الصحف الإلکترونية المصرية

يهدف هذا البحث إلى تحليل و رصد التغطية المصورة للإرهاب وأحداثه بالصحف الإلکترونية المصرية من خلال تحليل مجموعة الصور الرقمية الثابتة التى نشرتها الصحف خلال فترة البحث ، و التعرف على الأطر التي استخدمتها تلک الصحف فى نشر الصور، وأسلوب عرضها و معالجتها لتلک الصور The study aims to analyze and monitor the photo coverage of terrorism and its events in the Egyptian electronic newspapers by analyzing the set of digital fixed photos published by newspapers during the research period, and to identify the visual frames that these newspapers used with photos. The study also analyzes the presentation and treatment of these photos. The study reached a set of results, the most important of which are: There is a disparity between the newspapers with regard to the interest in publishing photos, so, the Seventh Day newspaper was ranked first with 85.6%, followed by Akhbar Al-Youm newspaper with 21.4%, then Al-wafd newspaper in the last place a newspaper with 19.8%. With regard to photos locations accompanying the text, the locations varied with respect to the text in the newspapers. Photos placed below the text were ranked first with 43.3%, followed by pictures on the top of the text by 42.4%, then the photos in the middle of the text were ranked by 14.2%. There are many types of photos in newspapers sample; news photos came first, followed by photos of topics, then humanized photos then personal photos, finally, infograph photos come in a small percentage. The frames included in the photos varied in the electronic newspapers sample, and that a single photo may included more than one frame. We found that the security/legal frame was ranked first, followed by the technical frame, then the support frame in the third rank, followed by the loss frame in the fourth rank, then the frame of human interest, then came in the sixth rank the conspiracy frame, and finally the historical context frame in the seventh rank.

A Pilot Study on Remote Sensing and Citizen Science for Archaeological Prospection

Cost-effective techniques for systematic archaeological prospection are essential to improve the efficiency of preventive archaeology and the preservation of cultural heritage. Web Mapping Services, such as Microsoft Bing Maps, provide imagery covering extensive areas at high resolution. These can, in some cases, reveal cropmarks of buried historical structures. Given that archaeological prospection is not generally the priority of most common Web Mapping Services, the conditions under which images are acquired are not always suitable for the appearance of cropmarks. Therefore, their detection is typically serendipitous. This pilot project attempts to assess the potential to use the Microsoft Bing Maps Bird’s Eye service within a crowdsourcing platform to systematically search for archaeological cropmarks in the surroundings of the city of Rome in Italy. On this platform, which is hosted by the company Scifabric (Southampton, UK) and based on PyBossa, an Open Source framework for crowdsourcing, members of the public are invited to interpret oblique air photo tiles of Bing Maps Bird’s Eye. While the project is still on-going, at least one seamless coverage of tiles in the area of interest has been interpreted. For each tile, the Bing Maps Bird’s Eye service provides oblique air photo coverage in up to four possible orientations. As of 5 July 2020, 18,765 of the total 67,014 tasks have been completed. Amongst these completed tasks, positive detections of cropmarks were recorded once for 1447 tasks, twice for 57 tasks, and three or more times for 10 tasks. While many of these detections may be erroneous, some correspond with archaeological cropmarks of buried remains of buildings, roads, aqueducts, and urban areas from the Roman period, as verified by comparison with archaeological survey data. This leads to the conclusion that the Bing Maps Bird’s Eye service contains a wealth of information useful for archaeological prospection, and that to a certain extent citizen researchers could help to mine this information. However, a more thorough analysis would need to be carried out on possible false negatives and biases related to the varying ease of interpretation of residues of different archaeological structures from multiple historical periods. This activity forms the first part of a research project on the systematic prospection of archaeological cropmarks. The ultimate aim is to reach a critical mass of training data through crowdsourcing which can be augmented and used as input to train a machine learning algorithm for automatic detection on a larger scale.

Efficient photo crowdsourcing with evolving POIs under delay-tolerant network environment

In a disaster or battlefield zone, rescue workers, soldiers, and other survivors (referred to as nodes) may need to survey damages and send images to the command and control center (the server) in a hop-by-hop fashion in the absence of any communication infrastructure. The server considers some area/landmark as the point of interest (POI) and distributes a request to the nodes to collect more information about them. Nodes take photos of POIs and share them with each other using the store and forward paradigm, also called Delay-tolerant Networks (DTNs), to send the photos to the server. Due to the highly intermittent contact characteristics of nodes in a DTN network and bandwidth and storage limitations, redundant photos need to be removed in this forwarding technique, whereas photos that cover different angles and views of the POIs need to be shared. Another challenge is that, over time, some server-listed POIs may not be of importance anymore, whereas some new POIs might be of more interest. In this work, we propose a scheme that is able to dynamically update the list of POIs based on the current photo metadata, with reduced consumption of the bandwidth, energy, and storage at DTN nodes by sending only important photos of POIs. In the performance evaluation, we show the scalability of our approach, and also show that it provides the same level of photo coverage but consumes much less energy and bandwidth than other related schemes.

ZICOS - A new project for neutrinoless double beta decay using Zirconium complex in organic liquid scintillator

A liquid scintillator containing 96Zr has been developed for ZICOS experiment. We will use 180 tons of liquid scintillator with 64 % photo coverage of 20 inch photomultiplier. In order to reach the sensitivity [math] ≥ 1027 years, we have to achieve 50 % enrichment of 96 Zr and reduce 95 % of 208Tl decay backgrounds. Using Monte Carlo simulation, we could reduce 93 % of 208Tl background with 78 % efficiency for 0νββ signal using difference of Cherenkov hit pattern. For the separation of Cherenkov and scintillation signals, we measured the timing pulse shape of Zr loaded liquid scintillator using FADC digitizer, and we found an inconsistent pulse shape at the rising time with the template of scintillation. Also the event rate with an inconsistent pulse shape seems to have a directionality.

Identifying and Removing the Silences of Roma Culture in Polish School Texts

The Roma are the largest and, some scholars would argue, the most marginalized group in Europe, an observation evident in an examination of school texts for Polish children. Using the concept of the “geographies of silence,” we discuss the nature of text and graphical silences and the reasons behind the paucity of text, photo, and map coverage. We conclude by presenting photos that could be used in future texts to better inform Polish youth about a much-neglected part of their culture.

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Nonprofit Communications ReportVolume 17, Issue 6 p. 2-2 Articles Get Photo Coverage First published: 10 May 2019 https://doi.org/10.1002/npcr.31203Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat No abstract is available for this article. Volume17, Issue6June 2019Pages 2-2 RelatedInformation

Recognition and tracking of moving objects in the images captured by UAV intelligently in earth observation operations

Today, drone is used for different purposes. Among these, security through detecting and tracking moving vehicles that have violated traffic rules, developing photo coverage from vast and high-risk areas, helping out deprived areas, and so on can be mentioned. In this paper, a new method is presented for detecting and tracking moving objects from moving platforms. The process itself consists of two parts: (1) identifying the path range that the object moves, which helps eliminate excess margins and increase the speed of operations and (2) identifying moving objects inside the path range and tracking them with a new method, which helps increase the accuracy in this regard. The approach presented to the selected video is applied to a frame as large as (1280 × 720) and has yielded very satisfactory results. Thus, the ability to identify the given moving objects in this method is 66% and 75% in very crowded scenes and in very quiet scenes, respectively. However, the power of the conventional methods in this regard is about 21% and 50% in the scenes with very busy backgrounds and in the scenes with very quiet backgrounds, respectively.

Waiting for a hypothetical asylum: The photographic coverage of the Maximilian Park in Brussels

Abstract This article investigates the photographic coverage of the migration crisis in Belgium. It focuses on an event that captured the attention of the Belgian media in September 2015. At the end of the summer, hundreds of Syrian and Iraqi refugees, waiting for a hypothetical asylum in Belgium, suddenly set up a camp in the middle of the Maximilian Park, which is located in the heart of Brussels, near the Immigration Office. Up to 1000 people slept there until the camp was dismantled in early October. These events generated a wave of citizen solidarity and constant political agitation over regularization of the refugees. Technical, thematic and contextual analysis of the photographic coverage of the Maximilian Park in four Belgian newspapers (two ‘popular’ titles and two ‘quality papers’) helps not just to understand how what happened there is to be distinguished from other pictures and stereotypes of refugees, but also how these images express and feed longer crisis narratives at both Belgian and European levels. We observed that the photo coverage of the quality newspapers focused on the refugees and the living conditions in the park (while the tabloid newspapers largely ignored them). Instead of showing the refugees as a threat or as distant foreigners facing a new interlocutor (the volunteers of the park), those pictures chose to get as close as possible to the refugees’ daily life and their difficult living conditions. In doing so, however, the pictures presented to the readers seemed far from the tendency to universalize ‘the refugee’ and do not question photojournalism as a form of humanism.

Enhanced photon traps for Hyper-Kamiokande

Hyper-Kamiokande, the next generation large water Cherenkov detector in Japan, is planning to use approximately 80,000 20-inch photomultiplier tubes (PMTs). They are one of the major cost factors of the experiment. We propose a novel enhanced photon trap design based on a smaller and more economical PMT in combination with wavelength shifters, dichroic mirrors, and broadband mirrors. GEANT4 is utilized to obtain photon collection efficiencies and timing resolution of the photon traps. We compare the performance of different trap configurations and sizes. Our simulations indicate an enhanced photon trap with a 12-inch PMT can match a 20-inch PMT's collection efficiency, however at a cost of reduced timing resolution. The photon trap might be suitable as detection module for the outer detector with large photo coverage area.

ZICOS - New project for neutrinoless double beta decay experiment using zirconium complex in liquid scintillator

A liquid scintillator containing a tetrakis (isopropyl acetoacetato) zirconium has been developed for new project of neutrinoless double beta decay experiment (ZICOS experiment). We have synthesized a tetrakis (isopropyl acetoacetato) zirconium, which have high solubility (over 31.2 wt.%) in anisole. We measured the performance of liquid scintillator containing 10 wt.% concentration of a tetrakis (isopropyl acetoacetato) zirconium, and obtained 48.7 ± 7.1% of the light yield of BC505 and the energy resolution of 4.1 ± 0.6% at 3.35 MeV assuming 40% photo coverage of the photomultiplier, respectively. We also estimated that ZICOS experiment should be sensitive to (mν) < 0.1 eV assuming gA = 1.25, gpp = 1.11 and QRPA model, if a radius of the inner detector is 1.5 m and the detector is filled with this liquid scintillator with an enriched 96Zr nucleus and we can reduce 208 Tl backgrounds to be one tenth order of magnitude of KamLAND-Zen using Cherenkov lights.

Development of a liquid scintillator containing a zirconium β-keto ester complex for the ZICOS experiment

A liquid scintillator containing a zirconium β-keto ester complex has been developed for the ZIrconium Complex in Organic Scintillator (ZICOS) neutrinoless double beta decay experiment. We are aiming to develop a detector which has a good energy resolution (4% at 2.5 MeV), a large light yield (60% that of BC505) and a low background rate (0.1 counts/tonne⋅year) with several tonnes of 96Zr isotope, so we have investigated the zirconium β-keto ester complexes tetrakis(isopropyl acetoacetato)zirconium and tetrakis(ethyl acetoacetato)zirconium, which have high solubility (over 10 wt.%) in anisole. We measured the performance of liquid scintillators containing these zirconium β-keto ester complexes and obtained 40% of the light yield of BC505 and energy resolution of 4.1% at 2.5 MeV assuming 40% photo coverage of the photomultiplier in the ZICOS detector. Thus we almost achieved our initial goal. Preliminary investigations indicate that tetrakis(diethyl malonato)zirconium will give us no quenching of the light yield and an energy resolution of 2.9% at 2.5 MeV. This will be a suitable complex for the ZICOS experiment, if it has a large solubility.

Obama and Romney photos receive equal treatment

This research examines photographs of candidates in the 2012 presidential general election to understand how newspapers presented Obama and Romney. Significant differences existed in regard to behavior, context and perspective, but photo coverage was balanced on the whole.

The Indian Newspapers and American Presidential Election 2016: A Content Analysis of Photo Coverage

The Indian Newspapers and American Presidential Election 2016: A Content Analysis of Photo Coverage

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Special Events GaloreVolume 16, Issue 1 p. 7-7 Articles Get Photo Coverage First published: 21 December 2015 https://doi.org/10.1002/speg.30257Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat No abstract is available for this article. Volume16, Issue1January 2016Pages 7-7 RelatedInformation

Where have all the people gone? Enhancing global conservation using night lights and social media.

Conservation prioritization at large scales is complex, combining biological, environmental, and social factors. While conservation scientists now more often aim to incorporate human-related factors, a critical yet unquantified challenge remains: to identify which areas people use for recreation outside urban centers. To address this gap in applied ecology and conservation, we developed a novel approach for quantifying human presence beyond populated areas by combining social media "big data" and remote sensing tools. We used data from the Flickr photo-sharing website as a surrogate for identifying spatial variation in visitation globally, and complemented this estimate with spatially explicit information on stable night lights between 2004 and 2012, used as a proxy for identifying urban and industrial centers. Natural and seminatural areas attracting visitors were defined as areas both highly photographed and non-lit. The number of Flickr photographers within protected areas was found to be a reliable surrogate for estimating visitor numbers as confirmed by local authority censuses (r = 0.8). Half of all visitors' photos taken in protected areas originated from under 1% of all protected areas on Earth (250 of -27 000). The most photographed protected areas globally included Yosemite and Yellowstone National Parks (USA), and the Lake and Peak Districts (UK). Factors explaining the spatial variation in protected areas Flickr photo coverage included their type (e.g., UNESCO World Heritage sites have higher visitation) and accessibility to roads and trails. Using this approach, we identified photography hotspots, which draw many visitors and are also unlit (i.e., are located outside urban centers), but currently remain largely unprotected, such as Brazil's Pantanal and Bolivia's Salar de Uyuni. The integrated big data approach developed here demonstrates the benefits of combining remote sensing sources and novel geo-tagged and crowd-sourced information from social media in future efforts to identify spatial conservation gaps and pressures in real time, and their spatial and temporal variation globally.

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News Photos about Sichuan Earthquake: Effects of Political Ideology and Organizational Goal

This paper analyzes how and why some books published by various organizations in different regions of China select photos to record and commemorate the Sichuan earthquake happened on May 12, 2008. A comparison of the photo coverage by the official Chinese news media and the slightly more marketoriented media is done.

DECENTRALIZED MULTI-ROBOT PLANNING TO EXPLORE AND PERCEIVE

In a recent French robotic contest, the objective was to develop a multi-robot system able to autonomously map and explore an unknown area while also detecting and localizing objects. As a participant in this challenge, we proposed a new decentralized Markov decision process (Dec-MDP) resolution based on distributed value functions (DVF) to compute multi-robot exploration strategies. The idea is to take advantage of sparse interactions by allowing each robot to calculate locally a strategy that maximizes the explored space while minimizing robots interactions. In this paper, we propose an adaptation of this method to improve also object recognition by integrating into the DVF the interest in covering explored areas with photos. The robots will then act to maximize the explored space and the photo coverage, ensuring better perception and object recognition.