Optimal feature points for tracking multiple moving objects in active camera model

Object tracking is an important task in computer vision that is essential for higher level vision applications such as surveillance systems, human-computer interaction, industrial control, smart compression of video, and robotics. Tracking, however, cannot be easily accomplished due to challenges such as real-time processing, occlusions, changes in intensity, abrupt motions, variety of objects, and mobile platforms. In this paper, we propose a new method to estimate and eliminate the camera motion in mobile platforms, and accordingly, we propose a set of optimal feature points for accurate tracking. Experimental results on different videos show that the proposed method estimates camera motion very well and eliminate its effect on tracking moving objects. And the use of optimal feature points results in a promising tracking. The proposed method in terms of accuracy and processing time has desirable results compared to the state-of-the-art methods.     

Relation Between Mechanical Instabilities and Corrosion Sensitivity of Aluminum Body Cans Surfaces

Protection of Metals and Physical Chemistry of Surfaces - In this work we investigated the mechanical and corrosion behavior of aluminum can bodies. The results obtained show homogeneous...     

Behavior-based Autonomous Navigation and Formation Control of Mobile Robots in Unknown Cluttered Dynamic Environments with Dynamic Target Tracking

While different species in nature have safely solved the problem of navigation in a dynamic environment,this remains a challenging task for researchers around t...     

Low sensitivity to temperature compressive-strained structure quantum well laser Ga1−xInxAs1−yNy/GaAs

The objective is to exploit the properties of the GaInNAs/GaAs alloy compressive strain structure to design a laser diode likely to meet the needs of optical communications. Modelling concerns mainly the study of the potentialities of thermal stability and dynamic response offered by these new techniques of electric and optical confinement. Band structure is modelled and typical quantum well properties are illustrated. A thorough study of the structural parameters is undertaken to take into account from the design criteria the temperature sensitivity. Minimising the Auger coefficient in the order of 10⁻²⁹ cm⁶/s appears to allow achieving efficient laser diodes production.     

Illustrative Discussion of MC-Dropout in General Dataset: Uncertainty Estimation in Bitcoin

Neural Processing Letters - The past few years have witnessed the resurgence of uncertainty estimation generally in neural networks. Providing uncertainty quantification besides the predictive...     

Sliding mode audio class-D amplifier for portable devices

Audio class-D amplifiers are widely used in industrial and consumer portable electronic devices, such as mobile phones, thanks to their high efficiency. However, these amplifiers have a limited linearity due to their switching behavior and also a limited control bandwidth. To overcome these major drawbacks, this paper introduces a self-oscillating control technique based on the sliding mode theory which combines a large control bandwidth and a spread spectrum technique. A high power supply rejection, which is a crucial parameter in modules directly connected to a noisy battery, has also been achieved by introducing a variable hysteresis window. Theoretical analysis, behavioral and electrical simulations are discussed in detail in this paper. An integrated circuit using 0.13 μm CMOS process has been realized focused on mobile phone applications (0.8 W, 3.6 V and 8 Ω). The audio amplifier achieves 97 dB(A) signal-to-noise ratio, 0.02 % harmonic distortion and up to 80 dB of power supply rejection. The die area is smaller than 0.4 mm² while keeping more than 90 % efficiency at 1 W.     

A BiCMOS Current Conveyor Based Four-Quadrant Analog Multiplier

A novel circuit for an analog multiplier in BiCMOS technology is described. It is based on a two-current conveyor cell associated with a four MOSFET transconductor. This differential multiplier achieves a bandwidth of 10 MHz because of the use of high-frequency current-conveyor.