Improving the Efficiency of Image Interpretation Using Ground Truth Terrestrial Photographs

2019 ◽  
pp. 1098-1128
Author(s):  
Gennady Gienko ◽  
Michael Govorov

Researchers worldwide use remotely sensed imagery in their projects, in both the social and natural sciences. However, users often encounter difficulties working with satellite images and aerial photographs, as image interpretation requires specific experience and skills. The best way to acquire these skills is to go into the field, identify your location in an overhead image, observe the landscape, and find corresponding features in the overhead image. In many cases, personal observations could be substituted by using terrestrial photographs taken from the ground with conventional cameras. This chapter discusses the value of terrestrial photographs as a substitute for field observations, elaborates on issues of data collection, and presents results of experimental estimation of the effectiveness of the use of terrestrial ground truth photographs for interpretation of remotely sensed imagery. The chapter introduces the concept of GeoTruth – a web-based collaborative framework for collection, storing and distribution of ground truth terrestrial photographs and corresponding metadata.

Author(s):  
Gennady Gienko ◽  
Michael Govorov

Researchers worldwide use remotely sensed imagery in their projects, in both the social and natural sciences. However, users often encounter difficulties working with satellite images and aerial photographs, as image interpretation requires specific experience and skills. The best way to acquire these skills is to go into the field, identify your location in an overhead image, observe the landscape, and find corresponding features in the overhead image. In many cases, personal observations could be substituted by using terrestrial photographs taken from the ground with conventional cameras. This chapter discusses the value of terrestrial photographs as a substitute for field observations, elaborates on issues of data collection, and presents results of experimental estimation of the effectiveness of the use of terrestrial ground truth photographs for interpretation of remotely sensed imagery. The chapter introduces the concept of GeoTruth – a web-based collaborative framework for collection, storing and distribution of ground truth terrestrial photographs and corresponding metadata.


Author(s):  
Gang Gong ◽  
Mark R. Leipnik

Remote sensing refers to the acquisition of information at a distance. More specifically, it has come to mean using aerial photographs or sensors on satellites to gather data about features on the surface of the earth. In this article, remote sensing and related concepts are defined and the methods used in gathering and processing remotely sensed imagery are discussed. The evolution of remote sensing, generic applications and major sources of remotely sensed imagery and programs used in processing and analyzing remotely sensed imagery are presented. Then the application of remote sensing in warfare and counterterrorism is discussed in general terms with a number of specific examples of successes and failures in this particular area. Next, the potential for misuse of the increasing amount of high resolution imagery available over the Internet is discussed along with prudent countermeasures to potential abuses of this data. Finally, future trends with respect to this rapidly evolving technology are included.


Monica M. Cole (Bedford College, London, U. K.). In contributing to a discussion of the use of multispectral satellite imagery in the exploration for petroleum and minerals covered by Mr Peters I wish to emphasize four points, some of which are relevant also to statements made by Dr Curran in his presentation. The first point is that remotely sensed imagery is a tool and its interpretation a technique to be used as appropriate and integrated with other techniques in mineral exploration. Mr Peters has reviewed the potential of multispectral satellite imagery and emphasized its value in initial reconnaissance studies notably for the identification of geological structures and lithologies. I would emphasize also its value at more advanced stages of exploration when reinterpretation of imagery at large scales and with reference to ground truth data can yield valuable information. My second point, which follows naturally from the first, is that effective interpretation of remotely sensed imagery requires an appreciation of the geographical environment as well as the geological environment. It is reflectances from the components of the geographical environment that produce the colours and tones seen on the colour composites generated from Landsat imagery. Except in arid areas largely devoid of plant cover, in natural terrain reflectances from vegetation dominate over those from soils and bedrock. Their contribution increases with increasing density of cover. The reflectances from different types of vegetation and from individual plant species, however, vary greatly, depending on the geometry of the canopy, the colour of foliage, the size, shape, angle, etc., of leaves, and the turgidity, water content and nutrient status of leaf cells. It is the differences in vegetation cover producing differing reflectances that permit the discrimination of lithologies and identification of structures on colour composites generated from Landsat imagery. In some areas, however, any or all of relict laterite, superficial cover, former and ephemeral drainage systems, and other physiographic features that are the legacies of geomorphological processes, complicate relations. These need to be understood for effective evaluation of imagery for geological purposes. In this context there is no substitute for field investigations, which are essential for the acquisition of ground truth data needed for effective evaluation of imagery.


In this paper we review and discuss several emerging themes in the area of image-interpretation for automated cartography and digital mapping. Our primary observations are that the detection, interpretation, and analysis of man-made structures by remotely sensed imagery requires the integration of spatial knowledge with image-analysis and interpretation techniques. General knowledge of structural and spatial layouts for man-made structures, as well as a priori map knowledge, can be expected to constrain search during image analysis. Spatial databases consisting of geographically referenced facts should form the basis of a priori knowledge necessary to perform interpretation and have a dual role as the repository of partially compiled facts acquired during scene-analysis.


2015 ◽  
pp. 12-22
Author(s):  
Waldopo Waldopo

Abstrak:Sejak diperkenalkan kepada masyarakat tahun 2012, permintaan layanan Penerimaan Peserta Didik Baru (PPDB) Online dari daerah terus bertambah. Oleh karena itu perlu dilakukan studi yang bertujuan untuk mengevaluasi kesesuaian pelaksanaan pelayanan Penerimaan Peserta Didik Baru (PPDB) Online dengan juklak dan juknisnya khususnya yang menyangkut pembiayaan, persyaratan minimal yang harus dipenuhi daerah, komitmen dari pihak yang menjalin kerjasama dalam melaksanakan tugas dan tanggung jawabnya, serta kelancaran konektivitas layanan. Studi dilaksanakan di kota Pekanbaru pada tanggal 24 sampai dengan 28 Juni 2013. Pengumpulan data dilaksanakan dengan wawancara, pengamatan lapangan, dan memeriksa dokumentasi. Responden studi adalah penanggung jawab kegiatan, supervisor, operator, tenaga teknis dari Pustekkom Kemdikbud, dan orang tua siswa. Hasil penelitian menunjukkan bahwa: (1) Layanan PPDB Online diberikan secara gratis, (2) Dinas Pendidikan Kota Pekanbaru telah memenuhi pesyaratan minimal untuk diberikan layanan PPDB Online secara gratis, (3) Pustekkom Kemdikbud dan Dinas Pendidikan Kota telah melaksanakan tugas dan tanggung jawabnya dengan baik sesuai dengan komitmen yang telah disepakati, dan (4) Konektivitas layanan belum lancar secara optimal (atau belum dapat sepenuhnya berjalan dengan lancar). Oleh karena itu, untuk mengatasi masalah konektivitas layanan PPDB Online di masa yang akan datang, disarankan agar diadakan simulasi/ujicoba layanan PPDB Online terlebih dahulu.Kata Kunci: TIK, Infrastruktur TIK, Aplikasi berbasis WEB, dan PPDB Online. Abstract:Since its introduction to public in 2012, the service request for Online Admission Application System for New Students (PPDB Online) from districts has continued to increase. It is therefore necessary to conduct a study aims to evaluate the conformity of the implementation of PPDB Online based on its guidelines, particularly regarding the financing, minimum requirements needed to fulfill by District, the commitment from related parties that in carrying out their duties and responsibilities, and the smooth connectivity of the service. The study ws conducted in the city of Pekanbaru from June 24 to June 28, 2013. The data collection was obtained by interviews, field observations, and checking the documentation. The respondents were person in charge (PIC), supervisors, operators, technical personnels from Pustekkom Kemdikbud, and parents. Data was analyzed descriptively. The results of the study indicated that (1) PPDB Online service is provided for free, (2) Educational Division at Pekanbaru City has met the minimum requirements for a free-of-charge service of PPDB Online, (3) Pustekkom Kemdikbud and Educational Division at Pekanbaru City have carried out their duties and responsibilities properly in accordance with the approved commitments , and (4) the connectivity of the service has not yet optimally implemented (or has not yet run smoothly). Therefore, to overcome the connectivity issue in PPDB Online in the future, it is suggested to conduct a simulation / testing services beforehand.Keywords: ICT, ICT Infrastructure, Web-Based Application, Online Admission Application System for New Students


2020 ◽  
Vol 2 (2) ◽  
pp. 105-111
Author(s):  
Teguh Hamdala ◽  
Shinta Esabella

This study aims to design and build a Monitoring and Evaluation (Monev) Application for Distribution of Social Funds in the Web-Based Sumbawa Regency Social Service in order to assist the Social Service in the Field of Facilitation and Social Security Facilitation in reporting or evaluating the conditions of social funds as well as monitoring changes recipient of social funds in Sumbawa Regency. Data collection methods used in this study are interviews, observation and literature studies and using spiral methods as a method of software development. This application was built using the Hypertext Propocessor (PHP) programming language and MySQL database as a Database Management System (DBMS). This application can help the Social Service in the Field of Facilitation of Protection and Social Security in reporting or evaluating the conditions of social funds while also carrying out the process of monitoring changes in recipients of social funds in Sumbawa Regency


2007 ◽  
Vol 25 (1) ◽  
pp. 47 ◽  
Author(s):  
Gennady Gienko ◽  
Michael Govorov ◽  
Brad Maguire ◽  
Youry Khmelevsky ◽  
Anatoly Gienko

This paper introduces an idea of establishing the GeoTruth Virtual Professional Community (VPC) for Image Analysis in Remote Sensing - a collaborative framework for professionals, using ground truth terrestrial photographs for interpretation and analysis of satellite and aerial imagery. The proposed utility-driven community is initially formed by members involved in developing an open-source GeoTruth Engine ? a collection of Web-based geo-data media tools, serving as a community-open participatory mechanism for collection, storage, distribution and analysis of geographically referenced landscape photographs and corresponding metadata. The paper investigates conceptual issues of collaborative networks related to establishing and evolving the GeoTruth VPC, describes basic life cycle development and operational principles, outlines possible implementation strategies for the GeoTruth framework, and finally elaborates on corresponding copyright and legal issues.


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