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Author | Steven Silva, Dennys Paillacho., David Soque, María Guerra & Jonathan Paillacho | ||||
Title | Autonomous Intelligent Navigation For Mobile Robots In Closed Environments. | Type | Conference Article | ||
Year | 2021 | Publication | The 2nd International Conference on Applied Technologies (ICAT 2020), diciembre 2-4. Communications in Computer and Information Science | Abbreviated Journal | |
Volume | 1388 | Issue | Pages | 391-402 | |
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Call Number | cidis @ cidis @ | Serial | 187 | ||
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Author | Charco, J.L., Sappa, A.D., Vintimilla, B.X., Velesaca, H.O. | ||||
Title | Camera pose estimation in multi-view environments:from virtual scenarios to the real world | Type | Journal Article | ||
Year | 2021 | Publication | In Image and Vision Computing Journal. (Article number 104182) | Abbreviated Journal | |
Volume | Vol. 110 | Issue | Pages | ||
Keywords | Relative camera pose estimation, Domain adaptation, Siamese architecture, Synthetic data, Multi-view environments | ||||
Abstract | This paper presents a domain adaptation strategy to efficiently train network architectures for estimating the relative camera pose in multi-view scenarios. The network architectures are fed by a pair of simultaneously acquired images, hence in order to improve the accuracy of the solutions, and due to the lack of large datasets with pairs of overlapped images, a domain adaptation strategy is proposed. The domain adaptation strategy consists on transferring the knowledge learned from synthetic images to real-world scenarios. For this, the networks are firstly trained using pairs of synthetic images, which are captured at the same time by a pair of cameras in a virtual environment; and then, the learned weights of the networks are transferred to the real-world case, where the networks are retrained with a few real images. Different virtual 3D scenarios are generated to evaluate the relationship between the accuracy on the result and the similarity between virtual and real scenarios—similarity on both geometry of the objects contained in the scene as well as relative pose between camera and objects in the scene. Experimental results and comparisons are provided showing that the accuracy of all the evaluated networks for estimating the camera pose improves when the proposed domain adaptation strategy is used, highlighting the importance on the similarity between virtual-real scenarios. |
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Language | English | Summary Language | English | Original Title | |
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Call Number | cidis @ cidis @ | Serial | 147 | ||
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Author | Mehri, A, Ardakani, P.B., Sappa, A.D. | ||||
Title | MPRNet: Multi-Path Residual Network for Lightweight Image Super Resolution. | Type | Conference Article | ||
Year | 2021 | Publication | In IEEE Winter Conference on Applications of Computer Vision WACV 2021, enero 5-9, 2021 | Abbreviated Journal | |
Volume | Issue | Pages | 2703-2712 | ||
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Call Number | cidis @ cidis @ | Serial | 148 | ||
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Author | Mehri, A, Ardakani, P.B., Sappa, A.D. | ||||
Title | LiNet: A Lightweight Network for Image Super Resolution | Type | Conference Article | ||
Year | 2021 | Publication | 25th International Conference on Pattern Recognition (ICPR), enero 10-15, 2021 | Abbreviated Journal | |
Volume | Issue | Pages | 7196-7202 | ||
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Call Number | cidis @ cidis @ | Serial | 149 | ||
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Author | Rivadeneira R.E., Sappa A.D., Vintimilla B.X., Nathan S., Kansal P., Mehri A et al. | ||||
Title | Thermal Image Super-Resolution Challenge – PBVS 2021. | Type | Conference Article | ||
Year | 2021 | Publication | In IEEE/CVF Conference on Computer Vision and Pattern Recognition Workshops, CVPRW 2021., junio 19 – 25, 2021 | Abbreviated Journal | |
Volume | Issue | Pages | 4354-4362 | ||
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Call Number | cidis @ cidis @ | Serial | 151 | ||
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Author | Luis C. Herrera, Leslie del R. Lima, Nayeth I. Solorzano, Jonathan S. Paillacho & Dennys Paillacho. | ||||
Title | Metrics Design of Usability and Behavior Analysis of a Human-Robot-Game Platform. | Type | Conference Article | ||
Year | 2021 | Publication | The 2nd International Conference on Applied Technologies (ICAT 2020), diciembre 2-4. Communication in Computer and Information Science | Abbreviated Journal | |
Volume | 1388 | Issue | Pages | 164-178 | |
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Call Number | cidis @ cidis @ | Serial | 191 | ||
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Author | Jacome-Galarza L.-R., Realpe Robalino M.-A., Paillacho Corredores J., Benavides Maldonado J.-L. | ||||
Title | Time series in sensor data using state of the art deep learning approaches: A systematic literature review. | Type | Conference Article | ||
Year | 2022 | Publication | VII International Conference on Science, Technology and Innovation for Society (CITIS 2021), mayo 26-28. Smart Innovation, Systems and Technologies. | Abbreviated Journal | |
Volume | 252 | Issue | Pages | 503-514 | |
Keywords | time series, deep learning, recurrent networks, sensor data, IoT. | ||||
Abstract | IoT (Internet of Things) and AI (Artificial Intelligence) are becoming support tools for several current technological solutions due to significant advancements of these areas. The development of the IoT in various technological fields has contributed to predicting the behavior of various systems such as mechanical, electronic, and control using sensor networks. On the other hand, deep learning architectures have achieved excellent results in complex tasks, where patterns have been extracted in time series. This study has reviewed the most efficient deep learning architectures for forecasting and obtaining trends over time, together with data produced by IoT sensors. In this way, it is proposed to contribute to applications in fields in which IoT is contributing a technological advance such as smart cities, industry 4.0, sustainable agriculture, or robotics. Among the architectures studied in this article related to the process of time series data we have: LSTM (Long Short-Term Memory) for its high precision in prediction and the ability to automatically process input sequences; CNN (Convolutional Neural Networks) mainly in human activity recognition; hybrid architectures in which there is a convolutional layer for data pre-processing and RNN (Recurrent Neural Networks) for data fusion from different sensors and their subsequent classification; and stacked LSTM Autoencoders that extract the variables from time series in an unsupervised way without the need of manual data pre-processing.Finally, well-known technologies in natural language processing are also used in time series data prediction, such as the attention mechanism and embeddings obtaining promising results. |
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Call Number | cidis @ cidis @ | Serial | 152 | ||
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Author | Rubio, G.A., Agila, W.E | ||||
Title | A fuzzy model to manage water in polymer electrolyte membrane fuel cells | Type | Journal Article | ||
Year | 2021 | Publication | In Processes Journal. (Article number 904) | Abbreviated Journal | |
Volume | Vol. 9 | Issue | Issue 6 | Pages | |
Keywords | PEM fuel cell, fuzzy, neural network, electrical response, flooding, drying. | ||||
Abstract | In this paper, a fuzzy model is presented to determine in real-time the degree of dehydration or flooding of a proton exchange membrane of a fuel cell, to optimize its electrical response and consequently, its autonomous operation. By applying load, current and flux variations in the dry, normal, and flooded states of the membrane, it was determined that the temporal evolution of the fuel cell voltage is characterized by changes in slope and by its voltage oscillations. The results were validated using electrochemical impedance spectroscopy and show slope changes from 0.435 to 0.52 and oscillations from 3.6 mV to 5.2 mV in the dry state, and slope changes from 0.2 to 0.3 and oscillations from 1 mV to 2 mV in the flooded state. The use of fuzzy logic is a novelty and constitutes a step towards the progressive automation of the supervision, perception, and intelligent control of fuel cells, allowing them to reduce their risks and increase their economic benefits. | ||||
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Call Number | cidis @ cidis @ | Serial | 153 | ||
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Author | Rafael E. Rivadeneira, Angel Domingo Sappa, Vintimilla B. X. and Hammoud R. | ||||
Title | A Novel Domain Transfer-Based Approach for Unsupervised Thermal Image Super- Resolution. | Type | Journal Article | ||
Year | 2022 | Publication | Sensors | Abbreviated Journal | Sensors |
Volume | Vol. 22 | Issue | Issue 6 | Pages | |
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Call Number | cidis @ cidis @ | Serial | 170 | ||
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Author | Patricia L. Suárez, Angel D. Sappa, Boris X. Vintimilla | ||||
Title | Cycle generative adversarial network: towards a low-cost vegetation index estimation | Type | Conference Article | ||
Year | 2021 | Publication | IEEE International Conference on Image Processing (ICIP 2021) | Abbreviated Journal | |
Volume | 2021-September | Issue | Pages | 2783-2787 | |
Keywords | CyclicGAN, NDVI, near infrared spectra, instance normalization. | ||||
Abstract | This paper presents a novel unsupervised approach to estimate the Normalized Difference Vegetation Index (NDVI).The NDVI is obtained as the ratio between information from the visible and near infrared spectral bands; in the current work, the NDVI is estimated just from an image of the visible spectrum through a Cyclic Generative Adversarial Network (CyclicGAN). This unsupervised architecture learns to estimate the NDVI index by means of an image translation between the red channel of a given RGB image and the NDVI unpaired index’s image. The translation is obtained by means of a ResNET architecture and a multiple loss function. Experimental results obtained with this unsupervised scheme show the validity of the implemented model. Additionally, comparisons with the state of the art approaches are provided showing improvements with the proposed approach. | ||||
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Call Number | cidis @ cidis @ | Serial | 164 | ||
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