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The use of Smartphones (SPs)with Android Operating System (AOS) has reached unprecedented popularity. This is due to the many features that these devices offer as Internet connection, storage of information as well as the ability to perform diverse online transactions. As a result, these devices have become the main target of malware attacks that try to exploit the security vulnerabilities of AOS...
This article deals with the detection of prominent objects in images. As opposed to the standard approaches based on sliding windows, we study a fundamentally different solution by formulating the supervised prediction of a bounding box as an image retrieval task. Indeed, given a global image descriptor, we find the most similar images in an annotated dataset, and transfer the object bounding boxes...
This paper presents a novel strategy for object detection applied on a Quadrotor micro aerial vehicle (MAV) navigating in unknown urban environments. The Quadrotor is required to fly across a window and complete a transferring flight between an outdoor position to a final point inside a building. To achieve this goal, three main tasks must be accomplished; the first one involves the identification...
This live demonstration is related to ISCAS track “Imagers and Vision Processing”. It showcases the Gaussian pyramid with a CMOS vision sensor with a 176 × 120 pixel array in standard 0.18 μm CMOS technology. The sensing elements are 3T-APS with in-pixel ADC and CDS. The Gaussian pyramid is extracted concurrently with a double-Euler switched-capacitor network on the same substrate, giving RMSE errors...
Lane marking detection provides key information for scene understanding in structured environments. Such information has been widely exploited in Advanced Driving Assistance Systems and Autonomous Vehicle applications. This paper presents an enhanced lane marking detection approach intended for low-level perception. It relies on a multi-kernel detection framework with hierarchical weights. First,...
Road detection is one of the key issues of scene understanding for Advanced Driving Assistance Systems (ADAS). Recent approaches has addressed this issue through the use of different kinds of sensors, features and algorithms. KITTI-ROAD benchmark has provided an open-access dataset and standard evaluation mean for road area detection. In this paper, we propose an improved road detection algorithm...
Neuromimetic algorithms, such as the HMAX algorithm, have been very successful in image classification tasks. However, current implementations of these algorithms do not scale well to large datasets. Often, target-specific features or patches are “learned” ahead of time and then correlated with test images during feature extraction. In this paper, we develop a novel method for selecting a single set...
In this paper, it is presented an automated classification based on S-transform as feature extraction tool and Decision Tree as algorithm classifier. The signals generated according to mathematical models, including complex disturbances, have been used to design and test this approach, where noise is added to the signals from 40dB to 20dB. Finally, several disturbances, simple and complex, have been...
This paper introduces an architecture of a switched-capacitor network for Gaussian pyramid generation. Gaussian pyramids are used in modern scale- and rotation-invariant feature detectors or in visual attention. Our switched-capacitor architecture is conceived within the framework of a CMOS-3D-based vision system. As such, it is also used during the acquisition phase to perform analog storage and...
This paper introduces a two-tier CMOS-3D architecture for generation of Gaussian pyramids, detection of extrema, and calculation of spatial derivatives in an image. Such tasks are included in modern feature detectors, which in turn can be used for operations like object detection, image registration or tracking. The top tier of the architecture contains the image acquisition circuits in an array of...
An automated classification based on S-transform as feature extraction tool and Artificial Neural Network as algorithm classifier is presented. The signals generated according to mathematical models have been used to obtain experimental results in two stages, first, with a data set with only simple disturbances and, later, including complex disturbances, more usual in real electrical systems. In both...
This paper presents a prototype vision-enabled sensor node based on a commercial vision system of reduced size and power consumption. The wireless infrastructure for the deployment of a distributed smart camera network based on these nodes is provided by commercial motes. The smart camera, based on a low-power bio-inspired processing scheme, enables in-node image processing and vision tools. This...
An automated classification system based on Wavelet transform as a feature extraction tool in combination with Artificial Neural Network as algorithm classifier is presented. Perturbed signals generated according to mathematical models have been used to obtain experimental results in two stages, first, with a data set with simple disturbances and, later, including complex disturbances, more usual...
Technological aspects of the 3D integration of a multilayer combined mixed-signal and digital sensor-processor array chip is described. The 3D integration raises the question of signal routing, power distribution, and heat dissipation, which aspects are considered systematically in the digital processor array layer as part of the multi layer structure. We have developed a linear programming based...
The architecture and the design details of a multilayer combined mixed-signal and digital sensor-processor array chip is shown. The processor layers are fabricated with 3D integration technology, and the sensor layer is integrated via bump bonding technology. The chip is constructed of a 320 x 240 sensor array layer, closely coupled with a 160 x 120 mixed-signal processor array layer, a digital frame...
Multiresolution modelling has been widely accepted as a good approach in order to reach a compromise between quality and performance in the rendering of complex geometries. Adaptive simplification techniques that preserve visually outstanding features have also been explored. However, the presence of external factors, such as lights or movement, may also influence visual attention. The goal of this...
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