Edge detection from images is one of the most important concerns in digital image and video processing. Edge detection is very useful in computer vision for extracting meaningful information from images. Real time edge detection is implemented on the platform that consists of the TMS320DM6437 DSP, camera, TV tuner, Display and canny edge detection algorithm. The main goal of our technique is to...

Software specializers and hardware accelerators share the common goal of decreasing the runtime of an operation while being parameterizable and abstracting away underlying optimizations from users. The competition for reconfigurable hardware resources among candidate hardware accelerators means that tuning must take place at an application level and not at an operation level as is the case for ...

Recently, several designs of single fed circularly polarized microstrip antennas have been studied. Relatively, a few designs for achieving circular polarization using triangular microstrip antenna are available. Typically existing design of single fed circularly polarized triangular microstrip antennas include the use of equilateral triangular patch with a slit or a horizontal slot on the patc...

A coherent study of tuning properties of resonantcap IMPATT oscillator at Ka-band has been carried out by mechanical and electronic means. It is experimentally observed that output power of IMPATT oscillator passes through a maximum, with an optimum combination of cap diameter and cap height. An empirical relation is obtained between cap diameter and wavelength of the optimised resonant cap osc...

In this paper we discuss an application of CMOS photo-sensor array chip using pulse frequency modulation (PFM) to sub-retinal implantation to recover human vision. PFM with integration mode as photo-sensing circuit is used to realize enough dynamic range and compatibility with signals in real retina. To effectively stimulate the retinal cells, we have designed a PFM circuit with limited bandwid...

The installation of a 3rd harmonic Landau accelerator module is planned at BESSY II to improve the beam lifetime. The passive cavity shall provide an accelerating voltage up to 500 kV for beam currents from 10 to 500 mA. A CESR Phase-III cavity [1], scaled to 1.5 GHz, will be used. The cavity design provides strong damping of higher-order modes by ferrite loads on the beam tubes. A new module, ...

The 28 MHz accelerating system consists of a quarter wave cavity driven by an inductively coupled 100kW tetrode amplifer and 1kW solid state driver amplifer. 40dB of rf feedback closed around the cavity and amplifers reduces small perturbations within the loop by a factor of 100, and reduces the time required to shift the phase at transition by a factor of 10, limited by the saturation of the d...

Packing high-dimensional data into comprehensible visualizations is difficult. A number of techniques exist to composite multiple layers of data. However, these techniques require a lot of parameter manipulation to achieve an image in which each layer can be segmented from the others over the entire surface. We propose an interactive, multi-view system for creating multi-layer composites and se...

Mr. Romer: One comment of Alan Blinder’s that we want to respond to concerns the question of how much emphasis the central bank should put on unemployment. Alan wasn’t clear, at least to me, about the distinction between stabilization on the one hand and erring on the side of low unemployment on the other. Nothing we’ve said implies that Alan Greenspan’s role as a fine-tuner is not very importa...

This paper presents a channel-select filter that employs an active-RC bi-quad structure for TV-tuner application. A design method to optimize the IIP3 of the bi-quad is developed. Multi-band selection and gain adjustment are implemented using switching resistors in the resistor array and capacitors in the capacitor array. Q-factor degradation is compensated by a tuning segmented resistor. A fee...