scholarly journals Postprocessing for Skin Detection

2021 ◽  
Vol 7 (6) ◽  
pp. 95
Author(s):  
Diego Baldissera ◽  
Loris Nanni ◽  
Sheryl Brahnam ◽  
Alessandra Lumini

Skin detectors play a crucial role in many applications: face localization, person tracking, objectionable content screening, etc. Skin detection is a complicated process that involves not only the development of apposite classifiers but also many ancillary methods, including techniques for data preprocessing and postprocessing. In this paper, a new postprocessing method is described that learns to select whether an image needs the application of various morphological sequences or a homogeneity function. The type of postprocessing method selected is learned based on categorizing the image into one of eleven predetermined classes. The novel postprocessing method presented here is evaluated on ten datasets recommended for fair comparisons that represent many skin detection applications. The results show that the new approach enhances the performance of the base classifiers and previous works based only on learning the most appropriate morphological sequences.

Author(s):  
Damian Walford Davies

Ronald Lockley (1903–2000), distinguished naturalist, pioneering conservationist, author in multiple genres, and paradigmatic modern ‘island dweller’, played a crucial role in defining our sense of Welsh and wider archipelagic ‘islandness’. Drawing on ‘nissology’—a dynamic ‘research frontier’ that brings together the arts, sciences, and social sciences to scrutinize not only islands ‘in their own terms’, but also the complex cultural condition of islandness—this chapter offers an analysis of how Welsh island space is mediated through Lockley’s plethora of discourses, from autobiographical narratives of island existence to definitive field studies and scientific papers, to works of popular anthropology, social history, and the novel Seal Woman (1974). It demonstrates how Lockley’s construction of a series of relational Welsh identities is linked to wider British and global archipelagic locations of culture.


Materials ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1098
Author(s):  
Agata Blacha-Grzechnik

For many years, the research on conjugated polymers (CPs) has been mainly focused on their application in organic electronics. Recent works, however, show that due to the unique optical and photophysical properties of CPs, such as high absorption in UV–Vis or even near-infrared (NIR) region and efficient intra-/intermolecular energy transfer, which can be relatively easily optimized, CPs can be considered as an effective light-activated source of versatile and highly reactive singlet oxygen for medical or catalytic use. The aim of this short review is to present the novel possibilities that lie dormant in those exceptional polymers with the extended system of π-conjugated bonds.


Author(s):  
Mohamed El-Agroudy ◽  
Hatem Abou-Senna ◽  
Essam Radwan

In the case of the low-density city, empirical evidence continuously demonstrates that transit investment is not a magic bullet. Desirable outcomes are not guaranteed and are often dependent on development density and other urban characteristics. Mobility-as-a-service (MaaS) presents a new approach: a digital platform providing access to multi-modal travel alternatives and totally comprehensive integrated trip-making, planning, and payment services. Review of the literature highlights shortcomings in traditional transportation planning by examining aspects of multi-modal planning such as adoption, parterships, operations, integration, capacity implications, and impact analyses. To enhance the practice of multi-modal planning, the following experiment evaluates various performance measures and inter-modal interactions on International Drive in Orlando, Florida, U.S., via D- and I-optimal experimental designs in a simulated MaaS network. Alternative scenarios are developed comparing varied modal shares across five travel modes: personal vehicles, transit, ridesourcing (or ride-hailing), micro-mobility, and walking. The modal effects are analyzed to highlight the strengths and weakness of each mode under a variety of congestion conditions. While transit enjoys the lowest impact per person, ridesourcing demonstrates adverse effects across all measures. Based on the novel interactions of transit and ridesourcing with directional demand, strategies are outlined for optimizing ridesourcing-transit integration to reduce route travel time, queuing, and overall network delay. The performance impacts of curbside facilities are also discussed for improved multi-modal integration at the street level. These findings are applied to propose a framework for effective planning and implementation of mobility services in low-density cities, focused on operations, city-level connectivity, and curbside management.


2020 ◽  
Vol 9 (S1-Dec2020) ◽  
pp. 63-66
Author(s):  
Saranya Lakshmanan ◽  
P Nagaraj

Nature and literature are interwoven. Without natural world, the beauty of words cannot be celebrated. So far in literature the exquisiteness of nature is being taken into deliberation. Trees play a crucial role in our planet but they are taken for granted by humans for their sophisticated life. It is easy to plant tree saplings but it is very difficult to protect a tree. Trees play an important role for human survival. Still people are not concerned to protect or conserve forest because they are connected with machines than with nature. Every individuals run behind the technical advancement that they will protest in virtual media to safeguard nature but not in reality. Trees do communicate but human fails to understand. This study unfurls the dark destroying side of nature through the Pulitzer Prize winning novel The Overstory by Robert Powers.


Author(s):  
Dibya Jyoti Bora

HE stain images play a crucial role in the medical imaging process. Often these images are regarded as of golden standards by physicians for the quality and accuracy. These images are fuzzy by nature, and hence, traditional hard-based techniques are not able to deal with this. Thereby, a decrease in the accuracy of the analysis process may be experienced. Preprocessing of these images is utmost needed so that the fuzziness may be removed to a satisfactory level. A new approach for tackling this problem is introduced in this chapter. The proposed technique is soft computing-based advanced adaptive ameliorated CLAHE. The experimental results demonstrate the superiority of the proposed approach than the other traditional techniques.


Author(s):  
Hongwei Bao

This chapter examines the construction of Chinese gay identity in a popular queer online fiction titled Beijing Story. Drawing on the Derridian notion of “hauntology”, I propose to read the novel as a social critique of postsocialist China in the context of globalization and neoliberalism. I highlight the intersections between sexuality, masculinity, and class in the narrative, and the potential productivity of paying more attention to the issue of class in queer subject formation in contemporary China. I also emphasize the crucial role of the transnational, as well as historical forms of homoeroticism and recent historical memories of revolution and reconstruction, in constructing contemporary gay identity in China. In doing so, I critically assess the role of “queer Marxism” (Liu 2015) in a transnational Chinese context.


Author(s):  
Giulio Rosati ◽  
Damiano Zanotto

This paper deals with a novel approach to the design of cable-driven systems. This kind of robots possesses several desirable features that distinguish them from common manipulators, such as: low-inertia, cost-effectiveness, safety, easy reconfiguration and transportability. One key-issue that arises from the unilateral actuation is the design for workspace optimization. Most previous researches on cable-driven systems design focused their attention on workspace analysis for existing devices. Conversely, we introduce a new approach for improving workspace by design, introducing movable pulley-blocks rather than increasing the number of cables. By properly moving the pulley-blocks, the end-effector can be always maintained in the best part of the working space, thus enhancing robot capabilities without the need for additional cables. Furthermore, the eventuality of cable interference is strongly reduced. In this paper, the novel design concept is applied to different planar point-mass cable-driven robots, with one or more translating pulley-blocks. The maximum feasible isotropic force, along with the power dissipation and the effective mass at the end-effector are employed to compare the performances of different configurations.


2019 ◽  
Vol 277 ◽  
pp. 01003 ◽  
Author(s):  
Baobing Zhang ◽  
Zhengwen Huang ◽  
Babak H. Rahi ◽  
Qicong Wang ◽  
Maozhen Li

Most existing multi-person tracking approaches are affected by lighting condition, pedestrian pose change abruptly, scale changes, realtime processing to name a few, resulting in detection error, drift and other issues. To cope with this challenge, we propose an enhanced multi-person framework by introducing a new observation model, which adaptively updates fully online to avoid the loss of sample diversity and learning in a semi-supervised manner. We fuse prior information for tracking decision, meanwhile extracted knowledge from current frame is used to assist to make tracking decision, which can be viewed as a transfer learning strategy, and both aspects can ameliorate the tendency to drift. The new approach does not need any calibration or batch processing. Experimental results show that the approach yields comparable or better performance in comparison with the state-of-the-arts, which do calibration or batch processing.


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