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  • 1
    Online Resource
    Online Resource
    Research Institute for Intelligent Computer Systems ; 2018
    In:  International Journal of Computing ( 2018-09-30), p. 171-179
    In: International Journal of Computing, Research Institute for Intelligent Computer Systems, ( 2018-09-30), p. 171-179
    Abstract: In this study, we present a novel local image descriptor, which is very efficient to compute densely, with semantic information based on visual primitives and relations between them, namely, coplanarity, cocolority, distance and angle. The designed feature descriptor covers both geometric and appearance information. The proposed descriptor has demonstrated its ability to compute dense depth maps from image pairs with a good performance evaluated by the Bad Matched Pixel criterion. Since novel descriptor is very high dimensional, we show that a compact descriptor can be sustitable. An analysis of size reduction was performed in order to reduce the computational complexity with no lose of quality by using different algorithms like max-min or PCA. This novel descriptor has a better results than state-of-the-art methods in stereo vision task. Also, an implementation in GPU hardware is presented performing time reduction using a NVIDIA R GeForce R GT640 graphic card and Matlab over a PC with Windows 10.
    Type of Medium: Online Resource
    ISSN: 2312-5381 , 1727-6209
    Language: Unknown
    Publisher: Research Institute for Intelligent Computer Systems
    Publication Date: 2018
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  • 2
    Online Resource
    Online Resource
    Institute of Electrical and Electronics Engineers (IEEE) ; 2022
    In:  IEEE Geoscience and Remote Sensing Letters Vol. 19 ( 2022), p. 1-5
    In: IEEE Geoscience and Remote Sensing Letters, Institute of Electrical and Electronics Engineers (IEEE), Vol. 19 ( 2022), p. 1-5
    Type of Medium: Online Resource
    ISSN: 1545-598X , 1558-0571
    Language: Unknown
    Publisher: Institute of Electrical and Electronics Engineers (IEEE)
    Publication Date: 2022
    detail.hit.zdb_id: 2138738-2
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  • 3
    In: Entropy, MDPI AG, Vol. 25, No. 7 ( 2023-06-28), p. 991-
    Abstract: Breast cancer is a disease that affects women in different countries around the world. The real cause of breast cancer is particularly challenging to determine, and early detection of the disease is necessary for reducing the death rate, due to the high risks associated with breast cancer. Treatment in the early period can increase the life expectancy and quality of life for women. CAD (Computer Aided Diagnostic) systems can perform the diagnosis of the benign and malignant lesions of breast cancer using technologies and tools based on image processing, helping specialist doctors to obtain a more precise point of view with fewer processes when making their diagnosis by giving a second opinion. This study presents a novel CAD system for automated breast cancer diagnosis. The proposed method consists of different stages. In the preprocessing stage, an image is segmented, and a mask of a lesion is obtained; during the next stage, the extraction of the deep learning features is performed by a CNN—specifically, DenseNet 201. Additionally, handcrafted features (Histogram of Oriented Gradients (HOG)-based, ULBP-based, perimeter area, area, eccentricity, and circularity) are obtained from an image. The designed hybrid system uses CNN architecture for extracting deep learning features, along with traditional methods which perform several handcraft features, following the medical properties of the disease with the purpose of later fusion via proposed statistical criteria. During the fusion stage, where deep learning and handcrafted features are analyzed, the genetic algorithms as well as mutual information selection algorithm, followed by several classifiers (XGBoost, AdaBoost, Multilayer perceptron (MLP)) based on stochastic measures, are applied to choose the most sensible information group among the features. In the experimental validation of two modalities of the CAD design, which performed two types of medical studies—mammography (MG) and ultrasound (US)—the databases mini-DDSM (Digital Database for Screening Mammography) and BUSI (Breast Ultrasound Images Dataset) were used. Novel CAD systems were evaluated and compared with recent state-of-the-art systems, demonstrating better performance in commonly used criteria, obtaining ACC of 97.6%, PRE of 98%, Recall of 98%, F1-Score of 98%, and IBA of 95% for the abovementioned datasets.
    Type of Medium: Online Resource
    ISSN: 1099-4300
    Language: English
    Publisher: MDPI AG
    Publication Date: 2023
    detail.hit.zdb_id: 2014734-X
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  • 4
    In: Remote Sensing, MDPI AG, Vol. 13, No. 15 ( 2021-07-24), p. 2914-
    Abstract: The principles of the transform stage of the extract, transform and load (ETL) process can be applied to index the data in functional structures for the decision-making inherent in an urban remote sensing application. This work proposes a method that can be utilised as an organisation stage by reducing the data dimension with Gabor texture features extracted from grey-scale representations of the Hue, Saturation and Value (HSV) colour space and the Normalised Difference Vegetation Index (NDVI). Additionally, the texture features are reduced using the Linear Discriminant Analysis (LDA) method. Afterwards, an Artificial Neural Network (ANN) is employed to classify the data and build a tick data matrix indexed by the belonging class of the observations, which could be retrieved for further analysis according to the class selected to explore. The proposed method is compared in terms of classification rates, reduction efficiency and training time against the utilisation of other grey-scale representations and classifiers. This method compresses up to 87% of the original features and achieves similar classification results to non-reduced features but at a higher training time.
    Type of Medium: Online Resource
    ISSN: 2072-4292
    Language: English
    Publisher: MDPI AG
    Publication Date: 2021
    detail.hit.zdb_id: 2513863-7
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  • 5
    Online Resource
    Online Resource
    Universidad Autonoma del Estado de Hidalgo ; 2023
    In:  Pädi Boletín Científico de Ciencias Básicas e Ingenierías del ICBI Vol. 11, No. Especial2 ( 2023-09-11), p. 190-195
    In: Pädi Boletín Científico de Ciencias Básicas e Ingenierías del ICBI, Universidad Autonoma del Estado de Hidalgo, Vol. 11, No. Especial2 ( 2023-09-11), p. 190-195
    Abstract: La superresolución (SR) es una técnica diseñada para aumentar la resolución espacial de una imagen digital de baja resolución (LR). A diferencia de los algoritmos basados en métodos de interpolación como método principal, los cuales en su mayoría tienden a deformar los bordes o producen imágenes con bordes irregulares; en este artículo se propone un algoritmo que preserva los bordes de la imagen original mediante los métodos de interpolación entre las sub-bandas de detalles obtenidas por medio de la Transformada Discreta Wavelet (DWT). Se realiza la descomposición wavelet utilizando tres diferentes familias: Daubechies, Symlet y Coiflet. Finalmente, todas las imágenes de sub-banda interpoladas se combinan para la generación de la imagen SR. Los resultados obtenidos demuestran un buen desempeño de acuerdo con las métricas objetivas: tiempo de ejecución, SSIM y PSNR (1.669 seg., 0.8908 y 30.61 dB respectivamente para imágenes con una superresolución de 4080x2712) y en términos subjetivos medidos por medio de la percepción visual humana de diferentes imágenes.
    Type of Medium: Online Resource
    ISSN: 2007-6363
    URL: Issue
    Language: Unknown
    Publisher: Universidad Autonoma del Estado de Hidalgo
    Publication Date: 2023
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  • 6
    Online Resource
    Online Resource
    Springer Science and Business Media LLC ; 2018
    In:  Multimedia Tools and Applications Vol. 77, No. 11 ( 2018-6), p. 13487-13511
    In: Multimedia Tools and Applications, Springer Science and Business Media LLC, Vol. 77, No. 11 ( 2018-6), p. 13487-13511
    Type of Medium: Online Resource
    ISSN: 1380-7501 , 1573-7721
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2018
    detail.hit.zdb_id: 1287642-2
    detail.hit.zdb_id: 1479928-5
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  • 7
    Online Resource
    Online Resource
    Institute of Electrical and Electronics Engineers (IEEE) ; 2019
    In:  IEEE Latin America Transactions Vol. 17, No. 08 ( 2019-8), p. 1326-1334
    In: IEEE Latin America Transactions, Institute of Electrical and Electronics Engineers (IEEE), Vol. 17, No. 08 ( 2019-8), p. 1326-1334
    Type of Medium: Online Resource
    ISSN: 1548-0992
    Language: Unknown
    Publisher: Institute of Electrical and Electronics Engineers (IEEE)
    Publication Date: 2019
    detail.hit.zdb_id: 2213968-0
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  • 8
    In: Applied Sciences, MDPI AG, Vol. 11, No. 7 ( 2021-04-02), p. 3187-
    Abstract: In this paper, a fragile watermarking scheme for color image authentication and self-recovery with high tampering rates is proposed. The original image is sub-sampled and divided into non-overlapping blocks, where a watermark used for recovery purposes is generated for each one of them. Additionally, for each recovery watermark, the bitwise exclusive OR (XOR) operation is applied to obtain a single bit for the block authentication procedure. The embedding and extraction process can be implemented in three variants (1-LSB, 2-LSB or 3-LSB) to solve the tampering coincidence problem (TCP). Three, six or nine copies of the generated watermarks can be embedded according to the variant process. Additionally, the embedding stage is implemented in a bit adjustment phase, increasing the watermarked image quality. A particular procedure is applied during a post-processing step to detect the regions affected by the TCP in each recovery watermark, where a single faithful image used for recovery is generated. In addition, we involve an inpainting algorithm to fill the blocks that have been tampered with, significantly increasing the recovery image quality. Simulation results show that the proposed framework demonstrates higher quality for the watermarked images and an efficient ability to reconstruct tampered image regions with extremely high rates (up to 90%). The novel self-recovery scheme has confirmed superior performance in reconstructing altered image regions in terms of objective criteria values and subjective visual perception via the human visual system against other state-of-the-art approaches.
    Type of Medium: Online Resource
    ISSN: 2076-3417
    Language: English
    Publisher: MDPI AG
    Publication Date: 2021
    detail.hit.zdb_id: 2704225-X
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  • 9
    In: Sensors, MDPI AG, Vol. 22, No. 14 ( 2022-07-07), p. 5113-
    Abstract: This work proposes a novel scheme for speckle suppression on medical images acquired by ultrasound sensors. The proposed method is based on the block matching procedure by using mutual information as a similarity measure in grouping patches in a clustered area, originating a new despeckling method that integrates the statistical properties of an image and its texture for creating 3D groups in the BM3D scheme. For this purpose, the segmentation of ultrasound images is carried out considering superpixels and a variation of the local binary patterns algorithm to improve the performance of the block matching procedure. The 3D groups are modeled in terms of grouped tensors and despekled with singular value decomposition. Moreover, a variant of the bilateral filter is used as a post-processing step to recover and enhance edges’ quality. Experimental results have demonstrated that the designed framework guarantees a good despeckling performance in ultrasound images according to the objective quality criteria commonly used in literature and via visual perception.
    Type of Medium: Online Resource
    ISSN: 1424-8220
    Language: English
    Publisher: MDPI AG
    Publication Date: 2022
    detail.hit.zdb_id: 2052857-7
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  • 10
    Online Resource
    Online Resource
    Universidad Autonoma del Estado de Hidalgo ; 2023
    In:  Pädi Boletín Científico de Ciencias Básicas e Ingenierías del ICBI Vol. 11, No. Especial2 ( 2023-09-11), p. 175-182
    In: Pädi Boletín Científico de Ciencias Básicas e Ingenierías del ICBI, Universidad Autonoma del Estado de Hidalgo, Vol. 11, No. Especial2 ( 2023-09-11), p. 175-182
    Abstract: Con el avance en las comunicaciones se han desarrollado procesos para la protección del contenido digital y su transmisión segura utilizando múltiples herramientas de procesamiento de información que incluyen técnicas de marcas de agua, las cuales insertan información en una señal portadora sin degradar su calidad, permitiendo verificar la integridad del contenido multimedia y la detección de manipulaciones, a partir de los cambios detectados en la marca de agua extraída. Este articulo propone un algoritmo de marca de agua frágil para la autenticación de audio digital, mediante la inserción de una marca de agua empleando la técnica del bit menos significativo (LSB) a partir del análisis de los dos primeros bits más significativos (MSB). Los resultados obtenidos demuestran que la marca de agua es imperceptible, obtenido valores promedio de SNR y NC de 43.22 dB y 0.9980 respectivamente; adicionalmente, el método propuesto es resistente a diversos ataques como muteo, clonación y sustitución de muestras.
    Type of Medium: Online Resource
    ISSN: 2007-6363
    URL: Issue
    Language: Unknown
    Publisher: Universidad Autonoma del Estado de Hidalgo
    Publication Date: 2023
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