68 documents found, page 1 of 7
Computer vision for reducing food waste in an institutional canteen: A literatu...
Correia, Ana; Aidos, Clara; Caldeira, J.M.L.P.; Soares, V.N.G.J.Food waste in today's society has been the subject of growing interest and discussion, given its economic, environmental, social, and nutritional implications. Although food waste is present throughout the food supply chain, in developed countries it tends to be higher in the final stages of consumption (e.g., households and food services). This study focuses on institutional canteens, where food waste includes...
The development of a prototype solution for collecting information on cycling a...
Miguel, Joaquim; Mendonça, Pedro; Quelhas, Agnelo; Caldeira, J.M.L.P.; Soares, Vasco N.G.J.Hiking and cycling have gained popularity as ways of promoting well-being and physical activity. This has not gone unnoticed by Portuguese authorities, who have invested in infrastructure to support these activities and to boost sustainable and nature-based tourism. However, the lack of reliable data on the use of these infrastructures prevents us from recording a endance rates and the most frequent types of us...
The development of a prototype solution for detecting wear and tear in pedestri...
Rosa, Gonçalo J.M.; Afonso, João M.S.; Gaspar, Pedro Dinis; Soares, Vasco N.G.J.; Caldeira, J.M.L.P.Crosswalks play a fundamental role in road safety. However, over time, many suffer wear and tear that makes them difficult to see. This project presents a solution based on the use of computer vision techniques for identifying and classifying the level of wear on crosswalks. The proposed system uses a convolutional neural network (CNN) to analyze images of crosswalks, determining their wear status. The design i...
Development of a prototype solution for reducing soup waste in an institutional...
Correia, Ana; Aidos, Clara; Caldeira, J.M.L.P.; Soares, V.N.G.J.Food waste has gained increasing attention and debate, given its economic, environmental, social, and nutritional implications. One-third of food intended for human consumption is wasted. Although it is present at all stages of the food supply chain, it is in the final stages of consumption, such as households and food services, that the problem becomes most evident. This work builds on a previous study by the ...
A mobile application for detecting and monitoring the development stages of wil...
Videira, João; Gaspar, Pedro Dinis; Soares, V.N.G.J.; Caldeira, J.M.L.P.Wild flowers and plants appear spontaneously. They form the ecological basis on which life depends. They play a fundamental role in the regeneration of natural life and the balance of ecological systems. However, this irreplaceable natural heritage is at risk of being lost due to human activity and climate change. The work presented in this paper contributes to the conservation effort. It is based on a previous...
Detecting wear and tear in pedestrian crossings using computer vision technique...
Rosa, Gonçalo J.M.; Afonso, João M.S.; Gaspar, Pedro Dinis; Soares, V.N.G.J.; Caldeira, J.M.L.P.Pedestrian crossings are an essential part of the urban landscape, providing safe passage for pedestrians to cross busy streets. While some are regulated by timed signals and are marked with signs and lights, others are simply marked on the road and do not have additional infrastructure. Nevertheless, the markings undergo wear and tear due to traffic, weather, and road maintenance activities. If pedestrian cros...
Utilização de técnicas de visão computacional para identificar e quantificar di...
Miguel, Joaquim; Mendonça, Pedro; Caldeira, J.M.L.P.; Soares, Vasco N.G.J.Em Portugal o número de percursos cicláveis e percursos pedestres homologados tem vindo a crescer ao longo dos anos, contribuindo para valorizar territórios ao atrair um número crescente de turistas nacionais e estrangeiros para a prática de desporto na natureza. Contudo, dado que se trata de espaços de livre acesso, habitualmente não existem dados fiáveis sobre a sua taxa de utilização. Tendo em conta que, na ...
Using computer vision to collect information on cycling and hiking trails users
Miguel, Joaquim; Mendonça, Pedro; Quelhas, Agnelo; Caldeira, J.M.L.P.; Soares, V.N.G.J.Hiking and cycling have become popular activities for promoting well-being and physical activity. Portugal has been investing in hiking and cycling trail infrastructures to boost sustainable tourism. However, the lack of reliable data on the use of these trails means that the times of greatest affluence or the type of user who makes the most use of them are not recorded. These data are of the utmost importance ...
Técnicas de visão computacional para deteção de passadeiras pedonais em mau est...
Rosa, Gonçalo J.M.; Afonso, João M.S.; Soares, Vasco N.G.J.; Caldeira, J.M.L.P.Este estudo visa validar, avaliar e comparar diferentes técnicas de visão computacional para detetar passadeiras pedonais em mau estado de conservação, muitas vezes quase imperceptíveis tanto para automobilistas como para peões. Apresenta os conceitos relacionados com a temática e as soluções apontadas na literatura, discute os pontos fortes e limitações das mesmas e identifica pontos em aberto. Após esta análi...
Utilização de técnicas de visão computacional para redução do desperdício alime...
Correia, Ana; Aidos, Clara; Soares, Vasco N.G.J.; Caldeira, J.M.L.P.Na sociedade atual, o desperdício alimentar tem sido alvo de interesse e discussão crescente, face às implicações económicas, ambientais, sociais e nutricionais. Este trabalho foca-se nas cantinas institucionais, onde o desperdício alimentar engloba as refeições preparadas que não foram vendidas, bem como os alimentos servidos que sobram nos pratos após o consumo da refeição. Esta apresentação centra-se num est...