scholarly journals Quantitative Landscape Assessment Using LiDAR and Rendered 360° Panoramic Images

2020 ◽  
Vol 12 (3) ◽  
pp. 386 ◽  
Author(s):  
Rafał Wróżyński ◽  
Krzysztof Pyszny ◽  
Mariusz Sojka
Keyword(s):  
Semantic Segmentation ◽  
Assessment Method ◽  
Point Of View ◽  
Field Of View ◽  
Landscape Assessment ◽  
Field Surveys ◽  
Surface Models ◽  
Panoramic Images ◽  
American Society ◽  
Graphics Software

The study presents a new method for quantitative landscape assessment. The method uses LiDAR data and combines the potential of GIS (ArcGIS) and 3D graphics software (Blender). The developed method allows one to create Classified Digital Surface Models (CDSM), which are then used to create 360° panoramic images from the point of view of the observer. In order to quantify the landscape, 360° panoramic images were transformed to the Interrupted Sinusoidal Projection using G.Projector software. A quantitative landscape assessment is carried out automatically with the following landscape classes: ground, low, medium, and high vegetation, buildings, water, and sky according to the LiDAR 1.2 standard. The results of the analysis are presented quantitatively—the percentage distribution of landscape classes in the 360° field of view. In order to fully describe the landscape around the observer, graphs of little planets have been proposed to interpret the obtained results. The usefulness of the developed methodology, together with examples of its application and the way of presenting the results, is described. The proposed Quantitative Landscape Assessment method (QLA360) allows quantitative landscape assessment to be performed in the 360° field of view without the need to carry out field surveys. The QLA360 uses LiDAR American Society of Photogrammetry and Remote Sensing (ASPRS) classification standards, which allows one to avoid differences resulting from the use of different algorithms for classifying images in semantic segmentation. The most important advantages of the method are as follows: observer-independent, 360° field of view which simulates human perspective, automatic operation, scalability, and easy presentation and interpretation of results.

scholarly journals A Renewed Approach to the ABC Landscape Assessment Method: An Application to Muntanyes d’Ordal, Barcelona Metropolitan Area

2018 ◽  
Vol 56 ◽  
pp. 1-13 ◽  
Author(s):  
David Serrano Giné
Keyword(s):  
Metropolitan Area ◽  
Field Work ◽  
Spatial Dimension ◽  
Assessment Method ◽  
Point Of View ◽  
Landscape Assessment ◽  
Main Interest ◽  
Level Ii ◽  
Level I ◽  
Landscape Units

The aim of this paper is to describe a renewed approach to the ABC landscape assessment method, a procedure that undertakes landscape approach considering abiotic (A), biotic (B) and cultural (C) elements shaping the landscape. This new method is organized in three nested multi-scaled levels defined with high accuracy (1:10,000; 1:20,000; 1:25,000), it combines holistic and parametric approaches and it delineates landscape units from both a typological and chorological point of view. The procedure is based on field work, congruently integrates physical, cultural and perceived landscape components and focuses on the spatial dimension of landscape. Landscape units are hierarchised and classified, leading to a landscape taxonomy. An example is given for Muntanyes d’Ordal, in the Barcelona metropolitan area, with 36 units and 1,019 delineations at Level I, 8 units and 74 delineations at Level II and 14 units at Level III. Overall, 42.5% of Level I delineations are defined by biotic elements and 32.4% by anthropic elements, which shows the peri-urban nature of the area studied. The main interest and originality of the method lies in the fact that the holistic and parametric approaches are integrated using a systematic procedure that can be easily replicated anywhere so that results from different areas can be compared.

scholarly journals Absolute mortality risk assessment of COVID-19 patients: the Khorshid COVID Cohort (KCC) study

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Hamid Reza Marateb ◽  
Maja von Cube ◽  
Ramin Sami ◽  
Shaghayegh Haghjooy Javanmard ◽  
Marjan Mansourian ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Hospital Admission ◽  
Mortality Risk ◽  
Regression Models ◽  
Assessment Method ◽  
Point Of View ◽  
Statistical Point ◽  
Hazard Regression ◽  
Risk Assessment Method ◽  
Discharge From Hospital

Abstract Background Already at hospital admission, clinicians require simple tools to identify hospitalized COVID-19 patients at high risk of mortality. Such tools can significantly improve resource allocation and patient management within hospitals. From the statistical point of view, extended time-to-event models are required to account for competing risks (discharge from hospital) and censoring so that active cases can also contribute to the analysis. Methods We used the hospital-based open Khorshid COVID Cohort (KCC) study with 630 COVID-19 patients from Isfahan, Iran. Competing risk methods are used to develop a death risk chart based on the following variables, which can simply be measured at hospital admission: sex, age, hypertension, oxygen saturation, and Charlson Comorbidity Index. The area under the receiver operator curve was used to assess accuracy concerning discrimination between patients discharged alive and dead. Results Cause-specific hazard regression models show that these baseline variables are associated with both death, and discharge hazards. The risk chart reflects the combined results of the two cause-specific hazard regression models. The proposed risk assessment method had a very good accuracy (AUC = 0.872 [CI 95%: 0.835–0.910]). Conclusions This study aims to improve and validate a personalized mortality risk calculator based on hospitalized COVID-19 patients. The risk assessment of patient mortality provides physicians with additional guidance for making tough decisions.

scholarly journals Possible Assessment Method of Green Infrastructure in the Case of Small Town Keszthely, Hungary

Land Science ◽  
2020 ◽  
Vol 2 (2) ◽  
pp. p21
Author(s):  
Vera Iváncsics ◽  
Krisztina Filepné Kovács
Keyword(s):  
Green Infrastructure ◽  
Environmental Planning ◽  
Evaluation Method ◽  
Assessment Method ◽  
Policy Implications ◽  
Current Status ◽  
Field Surveys ◽  
Further Development ◽  
The Eu

Recently the planning of green infrastructure (GI) has become a general practice around metropolis (Paris, München, Budapest, etc). A complex methodology is required that goes beyond the scope of traditional green surface systems. However, there are various policy implications in the EU, the smaller towns are lagging to apply them. The paper presents a potential evaluation method through the case study of Keszthely, HU. As Keszthely at Balaton Riviera, is a popular touristic target of CEE, the environmental planning is an essential part of sustainable development. After a literature analyses of assessment methods of GI and ecosystem services, the aspects of GI have been valued on grade scales, based on field surveys and indicators. The current status of the GI was surveyed which is a base for further development and monitoring activities. The paper introduces the methodology, which contributes to preservation of ecosystems.

scholarly journals A STUDY ON THE ASPECTS OF EUROCENTRISM AND DIFFUSIONISM REPRESENTED IN FOREIGNERS’ TRAVEL RECORDS ON KOREA IN EARLY 1900s

2017 ◽  
Vol 3 ◽  
pp. 117-126
Author(s):  
Kang Sok CHO
Keyword(s):  
Motion Picture ◽  
Point Of View ◽  
Jack London ◽  
The Political ◽  
Motion Picture Film ◽  
Political Situation ◽  
The World ◽  
Close Observation ◽  
American Society ◽  
Made In

This paper deals with three different perspectives appeared in foreign visitors’ records on Korea in 1900s. Jack London was a writer who wrote novels highly critical of American society based on progressivism. However, when his progressive perspective was adopted to report the political situation of Korea in 1904, he revealed a typical perspective of orientalism. He regarded Korea and ways of living in Korea as disgusting and ‘uncivilized.’Compared with Jack London’s perspective, French poet Georges Ducrocq’s book was rather favorable. He visited Korea in 1901 and he showed affectionate attitude toward Korea and its people. However, his travel report, Pauvre et Douce Coree, can be defined as representing aesthetic orientalism. He tried to make all the ‘Korean things’ seem beautiful and nice, but it is true that this kind of view can also conceal something concrete and specific. This perspective at once beautifies Korea and also conceals the reality about Korea.E. Burton Holmes was a traveler and he often used his ‘motion-picture’ machine to record things he witnessed while travelling around worldwide countries. So, his report (travelogue) and motion picture film on Korea written and made in 1901 was based on close observation and rather objective point of view. Nonetheless, he couldn’t avoid the perspective of the colonizer’s model of the world, in other words, geographical diffusionism of western culture.

To the teaching of constitutional anomalies

1927 ◽  
Vol 23 (6-7) ◽  
pp. 672-675
Author(s):  
A. D. Surkov
Keyword(s):  
Human Body ◽  
Point Of View ◽  
Field Of View ◽  
Structural Abnormality ◽  
Body Development ◽  
Healthy State

Anomalies of human body development come into the clinician's field of view usually only when a variant of structural abnormality takes beyond the so-called healthy state the function of the improperly developing organ and sometimes others, topically or functionally related to it. In most cases, the pathogenesis of such diseases is obvious, and individual forms are of interest only from the point of view of symptomatology.

Dealing with Diversity: Mapping Multiculturalism in Sociological Terms

2005 ◽  
Vol 23 (2) ◽  
pp. 218-240 ◽  
Author(s):  
Douglas Hartmann ◽  
Joseph Gerteis
Keyword(s):  
Social Cohesion ◽  
Social Ties ◽  
Point Of View ◽  
Social Boundaries ◽  
Politics Of Recognition ◽  
Scholarly Literature ◽  
The Social ◽  
American Society ◽  
The 1960S

Since the 1960s, a variety of new ways of addressing the challenges of diversity in American society have coalesced around the term “multiculturalism.” In this article, we impose some clarity on the theoretical debates that surround divergent visions of difference. Rethinking multiculturalism from a sociological point of view, we propose a model that distinguishes between the social (associational) and cultural (moral) bases for social cohesion in the context of diversity. The framework allows us to identify three distinct types of multiculturalism and situate them in relation to assimilationism, the traditional American response to difference. We discuss the sociological parameters and characteristics of each of these forms, attending to the strength of social boundaries as well as to the source of social ties. We then use our model to clarify a number of conceptual tensions in the existing scholarly literature and offer some observations about the politics of recognition and redistribution, and the recent revival of assimilationist thought.

Comparison of two algorithms for the application of real-time image mosaicking in neuroendoscopy

2014 ◽  
Vol 121 (3) ◽  
pp. 688-699
Author(s):  
Kay Niklas Liebig ◽  
Homajoun Maslehaty ◽  
Athanasios K. Petridis ◽  
Wolfgang Konen ◽  
Martin Scholz
Keyword(s):  
Field Of View ◽  
Frame Rate ◽  
Neurosurgical Procedures ◽  
Surgical Safety ◽  
Area Of Interest ◽  
Image Mosaicking ◽  
Panoramic Images ◽  
The Creation ◽  
Endoscopic Methods

Object Neuroendoscopy is used more and more frequently in neurosurgical procedures and has become an important tool in the neurosurgical armamentarium. However, the main restriction of neuroendoscopy is the limited field of view. A better overview of the area of interest would increase surgical safety and decrease procedure-related morbidity rates. In the present study, the authors aimed to improve this restriction by using and comparing two algorithms to create endoscopic panoramic images, which increase the field of view during neuroendoscopic procedures. Methods Different endoscopic methods with or without a stand and with linear or circular endoscope movements were performed in cadaveric ventricles. Video of the endoscopy was used to create image mosaics of the lateral ventricle with the help of the Kourogi or LogSearch (LS) algorithm. In the LS algorithm, different template sizes were used. Three observers graded the quality of the image mosaic in terms of usefulness in surgery. The fastest frame rate was 3–4 frames/second. Results The LS algorithm with a larger template size showed significantly better results for the creation of image mosaics than the Kourogi algorithm in linear endoscopic movement with or without a stand. In circular endoscopic movements, the results seemed to be better with the LS algorithm but were not significantly different from those obtained with the Kourogi algorithm. In summary, image quality in the experimental paradigms was satisfying. Conclusions Results in the study showed that the creation of image mosaics is possible and reliable with the featured algorithms. Image mosaicking is an applicable device for neuroendoscopy and can increase the field of view during endoscopic procedures. Its use can increase the safety and the field of application of neuroendoscopy. However, faster frame rates will be required to create a smooth image for practical use during surgery.

Victims of the Great Depression: Self-Blame/Non-Self-Blame, Radicalism, and Pre-1929 Experiences

1977 ◽  
Vol 1 (2) ◽  
pp. 137-177 ◽  
Author(s):  
Bernard Sternsher
Keyword(s):  
New Deal ◽  
Point Of View ◽  
Second Phase ◽  
Self Blame ◽  
Distribution Of Wealth ◽  
The Great Depression ◽  
Middle Way ◽  
American Society ◽  
The Right ◽  
The New Deal

The first phase of New Deal historiography saw a clash between attackers from the right, who held that the New Deal went too far and did too much, and liberal-centrist defenders, who maintained that the New Deal was a practical, democratic middle way between left and right totalitarianisms. The second phase, from the mid-1950s to the mid-1960s, saw the triumph, among politicians as well as historians, of the liberal-centrists over the rightist critics. In the mid-1960s, radical or left historians launched an attack on the New Deal, claiming that it did not go far enough and did not do very much—that, in fact, it did very little to reduce enduring inequities in American life by effecting significant changes in the distribution of wealth, income, and power. The radical critics also went beyond the question of what the New Deal should have been—from their point of view essentially socialistic—to the question of what it could have been, insisting that it could have gone much further in reshaping American society. The liberal-centrists, who do not subscribe to the radicals’ socialistic prescription, have made substantial concessions to the radicals’ estimate of what the New Deal was by recognizing the New Deal’s limitations, but they reject the radicals’ judgment on the question of what the New Deal could have been. They continue to assert that the New Deal accomplished about as much reform as one could reasonably expect under the circumstances.

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