Multiresolution bioinspired cross-polarized imaging and biostatistics of lung cancer tissue samples

Summarization: The novelty of this study consists in the development of a technique for efficient discrimination of lung tissues pathologies consisting of squamous carcinomas, at varying grade, stage, including necrotic tissues. Polarimetric measurements using a home-built Whole Slide Imaging (WSI) polarized light imaging system, operating under diffuse reflectance, were obtained. Images were acquired, under diffuse reflectance imaging, then processed through wavelet decomposition, statistically analyzed and compared using Pearson correlation coefficient analysis. The outcome of this study indicates that cross-polarized polarimetric wavelet analysis of samples is proved superior with respect the polarization per se analysis, providing therefore enhanced discrimination. The novel observations of this study can be applied towards the implementation of bioinspired vision systems as well as for further enhancement of the quality of imaging systems and devices in the areas of Whole-Slide Imaging (WSI) in conjunction to virtual Microscopy (VM) and imaging of margins.Παρουσιάστηκε στο: 2017 IEEE International Conference on Imaging Systems and Technique

Integration of bioinspired vision principles towards the design of autonomous guidance, navigation, and control systems

Summarization: In this study, key-characteristics of different bioinspired vision systems are presented, and their importance in the design of autonomous navigation systems is highlighted. Two paradigms reflecting authors' research efforts in the design of vision systems, mimicking the human and animal retina, are presented. The first paradigm relates to the development of novel polymer nanostructures and nanoantennas aimed at integrating polarization principles with CMOS designs, mimicking bioinspired retina systems. The second paradigm relates to the development and testing of a novel neuromorphic spike event-based polarimetric Dynamic Vision Sensor (DVS), for dynamic imaging of a scene, with enhanced temporal contrast and high object discrimination. The outcome of this study indicates that integration of several bioinspired vision principles, such as polarization of light and neuromorphic detection, play an important role in the design of innovative bioinspired nanomaterials and neuromorphic vision architectures.Παρουσιάστηκε στο: 9th International Conference on Information, Intelligence, Systems and Application

Address-Event Signal Processing: Silicon Retina, Cochlea and Olfaction A Review

© 2021 Tayarani-Najaran and Schmuker. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). https://creativecommons.org/licenses/by/4.0/The nervous systems converts the physical quantities sensed by its primary receptors into trains of events that are then processed in the brain. The unmatched efficiency in information processing has long inspired engineers to seek brain-like approaches to sensing and signal processing. The key principle pursued in neuromorphic sensing is to shed the traditional approach of periodic sampling in favor of an the event-driven scheme that mimicks sampling as it occurs in the nervous system, where events are preferably emitted upon the change of the sensed stimulus. In this paper we highlight the advantages and challenges of event-based sensing and signal processing in the visual, auditory and olfactory domains. We also provide a survey of the literature covering neuromorphic sensing and signal processing in all three modalities. Our aim is to facilitate research in event-based sensing and signal processing by providing a comprehensive overview of the research performed previously as well as highlighting conceptual advantages, current progress and future challenges in the field.Peer reviewe