Consejo Superior de Investigaciones Científicas · Centro Nacional de Microelectrónica
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Se buscan candidatos para contrato predoctoral con el objetivo de realizar una tesis en el área de Tecnología Electrónica y de Comunicaciones, asociada al proyecto de investigación FLEXICS.
Convocatoria abierta. Periodo de admisión de solicitudes: hasta las 18:00h. del 22 de diciembre de 2014
Se buscan candidatos para contrato predoctoral con el objetivo de realizar una tesis en el área de los sensores de imagen 3D en tecnologías CMOS, asociada al proyecto de investigación SMART CIS3D.
Convocatoria abierta. Periodo de admisión de solicitudes: hasta las 18:00h. del 22 de diciembre de 2014
Microscopía de Rayos X: Una nueva herramienta de imagen tridimensional a alta resolución.
David Jiménez, Técnico de Karl Zeiss España especializado en Microscopía Electrónica y Nanoelectrónica.
18 Diciembre 2014
El capítulo español de la IEEE Circuits and Systems Society, presidido por la Dra. Teresa Serrano Gotarredona, investigadora del IMSE-CNM, ha recibido el premio al mejor capítulo de la sección española del IEEE en 2014. El premio fue recogido por el Dr. José M. de la Rosa, secretario del capítulo y profesor de la Universidad de Sevilla.
31 Octubre 2014

75 aniversario del Consejo Superior de Investigaciones Científicas (CSIC)

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Últimas publicaciones
Automatic ROI for remote photoplethysmography using PPG and color features  »
Remote photoplethysmography (rPPG) enables contact-less monitoring of the blood volume pulse using a regular camera, thus providing valuable information about the cardiovascular system. However, the quality of the acquired rPPG signal is strongly affected by the region of skin where the analysis is carried out and, therefore, to be confident of obtaining valid information, a pre-selection of the region-of-interest (ROI) for the PPG analysis is necessary. In this paper, we propose a method for the automatic extraction of this ROI combining the local characteristics of the PPG-signal with the color information using fuzzy logic. Results of the quality of the ROI extraction and its application on pulse rate detection are provided.

Conference Paper - 10th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications VISIGRAPP 2015
E. Calvo-Gallego and G. de Haan
A 151 dB high dynamic range CMOS image sensor chip architecture with tone mapping compression embedded in-pixel  »
This paper presents a high dynamic range CMOS image sensor that implements an in-pixel content-aware adaptive global tone mapping algorithm during image capture operation. The histogram of the previous frame of an auxiliary image, which contains time stamp information, is employed as an estimation of the probability of illuminations impinging pixels at the present frame. The compression function of illuminations, namely tone mapping curve, is calculated using this histogram. A QCIF resolution proof-of-concept prototype has been fabricated using a 0.35 μm opto-flavored standard technology. The sensor is capable of mapping scenes with a maximum intra-frame dynamic range of 151 dB (25 bits/pixel in linear representation) by compressing them to only 7 bits/pixel, while keeping visual quality in details and contrast. The in-pixel on-the-fly fully parallel tone mapping achieves high-frame rate allowing real-time high dynamic range video (120 dB at 30 frames/s).

Journal Paper - IEEE Sensors Journal, vol. 15, no. 1, pp 180-195, 2014
DOI: 10.1109/JSEN.2014.2340875   » doi
ISSN: 1530-437X
S. Vargas-Sierra, G. Liñán-Cembrano and A. Rodríguez-Vázquez
Edge-adaptive spatial video de-interlacing algorithms based on fuzzy logic  »
Since the human visual system is especially sensitive to image edges, edge-dependent spatial interpolators have been proposed in literature as a means of successfully restoring edges while avoiding the staircase effect of linear spatial algorithms. This paper addresses the application of video de-interlacing, which constitutes an indispensable stage in video format conversion. Classic edge-adaptive de-interlacing algorithms introduce annoying artifacts when the edge directions are evaluated incorrectly. This paper presents two ways of exploiting fuzzy reasoning to reinforce edges without an excessive increase in computational complexity. The performance of the proposed algorithms is analyzed by deinterlacing a wide set of test sequences. The study compares the two proposals both with each other and with other edge-adaptive de-interlacing methods reported in the recent literature.

Journal Paper - IEEE Transactions on Consumer Electronics, vol. 60, no. 3, pp. 375-383, 2014
DOI: 10.1109/TCE.2014.6937321   » doi
ISSN: 0098-3063
P. Brox, I. Baturone, S. Sánchez-Solano and J. Gutiérrez-Ríos
Demo: A prototype vision sensor for real-time focal-plane obfuscation through tunable pixelation  »
Privacy concerns are hindering the introduction of smart camera networks in prospective application scenarios like retail analytics, factory monitoring or elderly care. The idea of networked cameras pervasively collecting data generates social rejection in the face of sensitive information being tampered by hackers or misused by legitimate users. New strategies must be developed in order to ensure privacy from the very point where sensitive data are generated: the sensors. Protection measures embedded on-chip at the front-end sensor of each network node significantly reduce the number of trusted system components as well as the impact of potential software flaws. In this demonstration, we present a full-custom QVGA vision sensor that can be recongured to implement programmable pixelation of image regions at the focal plane. In particular, we show on-the-fly focal-plane face obfuscation supported by the Viola-Jones frontal face detector provided by OpenCV.

Conference Paper - IEEE/ACM Int. Conference on Distributed Smart Cameras ICDSC 2014
J. Fernández-Berni, R. Carmona-Galán, R. del Río, R. Kleihorst, W. Philips and A. Rodríguez-Vázquez
Experimental validation of a two-phase clock scheme for fine-grained pipelined circuits based on monostable to bistable logic elements  »
Research on fine-grained pipelines can be a way to obtain high-performance applications. Monostable to bistable (MOBILE) gates are very suitable for implementing gate-level pipelines, which can be achieved without resorting to memory elements. The MOBILE operating principle is implemented operating two series connected negative differential resistance devices with a clock bias. This brief describes and experimentally validates a two-phase clock scheme for such MOBILE-based ultragrained pipelines. Its advantages over other reported interconnection schemes for MOBILE gates, and also over pure CMOS two-phase counterparts, are stated and analyzed. Chains of MOBILE gates have been fabricated and the experimental results of their correct operation with a two-phase clock scheme are provided. As far as we know, this is the first working MOBILE circuit to have been reported with this interconnection architecture.

Journal Paper - IEEE Transactions on Very Large Scale Integration (VLSI) Systems, vol. 22, no. 10, pp 2238-2242, 2014
DOI: 10.1109/TVLSI.2013.2283306   » doi
ISSN: 1063-8210
J. Nuñez, M.L. Avedillo and J.M. Quintana
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