connected filters

... which fit into X. Clearly this distorts the connected components and is not a connected filter. The opening-by-reconstruction ρ(X|X ◦ B) preserves all connected components of X into which at least ... 73 Attribute Filters I Introduced by Breen and Jones in 1996. Examples: area openings/closings, attribute openings, shape filters How do they work? Binary image : 1. compute attribute for e...

Ngày tải lên: 24/04/2014, 13:44

... in some way. Analog (electronic) filters can be used for these same tasks; however, digital filters can achieve far superior results. The most popular digital filters are described and compared ... with either analog or digital filters. Which is better? Analog filters are cheap, fast, and have a large dynamic range in both amplitude and frequency. Digital filters, in comparison, are...

Ngày tải lên: 13/09/2012, 09:50

... The point is, this is just theoretical squabbling; consider these filters equal in this parameter. The biggest difference in these filters is execution speed. Using a recursive algorithm (described ... understand this Chapter 15- Moving Average Filters 283 FIGURE 15-4 Frequency response of the Blackman window and Gaussian filter kernels. Both these filters provide better stopband atte...

Ngày tải lên: 13/09/2012, 09:50

... 285 CHAPTER 16 h[i] ' sin(2B f C i ) i B Windowed-Sinc Filters Windowed-sinc filters are used to separate one band of frequencies from another. They are very stable, ... convolution, windowed-sinc filters are easy to program, but slow to execute. Chapter 18 shows how the FFT can be used to dramatically improve the computational speed of these filters. Strategy of ... Signal Proce...

Ngày tải lên: 13/09/2012, 09:50

... 297 CHAPTER 17 Custom Filters Most filters have one of the four standard frequency responses: low-pass, high-pass, band-pass or band-reject. This chapter presents a general method of designing digital filters ... 17-9 Example of using three optimal filters. These signals result from filtering the waveform in Fig. 17-7 with the filters in Fig. 17-8. Each of these three filters is op...

Ngày tải lên: 13/09/2012, 09:50

... filters. Recursive filters are also called Infinite Impulse Response (IIR) filters, since their impulse responses are composed of decaying exponentials. This distinguishes them from digital filters ... performance of digital filters. The ability to provide an exact linear phase is a clear advantage of digital filters. Fortunately, there is a simple way to modify recursive filters...

Ngày tải lên: 13/09/2012, 09:50

... panels and arrays. Grid Grid - - connected PV system connected PV system • • Operate in parallel with and interconnected with the Operate in parallel with and interconnected with the electric utility ... VIỆT-PHÁP PFIEV Khoa Điện-Điện Tử 2002 – 2007. Diagram of grid -connected photovoltaic system. 5 Grid Grid - - connected PV system connected PV system • • A bi A bi - - directional...

Ngày tải lên: 26/04/2013, 08:26

... Energy & Environment Foundation. All rights reserved. Life cycle assessment of 50 kW p grid connected solar photovoltaic (SPV) system in India A. F. Sherwani 1 , J. A. Usmani 2 , Varun 3 ,

Ngày tải lên: 05/09/2013, 15:28

... CHAPTER 5 Finite Impulse Response Filters 5.1 INTRODUCTION From the previous two chapters, we have become familiar with the magnitude response ... Design, by B. A. Shenoi Copyright © 2006 John Wiley & Sons, Inc. 249 258 FINITE IMPULSE RESPONSE FILTERS 0 0.5 Normalized frequency 1 1.5 2 4 Phase response of type I FIR filter 3 2 1 0 Phase angle ... z −N H(z −1 ) (5.24) so we have the fo...

Ngày tải lên: 29/09/2013, 21:20

... reciprocals of the poles of the Chebyshev I filters.” 210 INFINITE IMPULSE RESPONSE FILTERS 4.2.7 Design of Chebyshev II Lowpass Filters Given ω p , A p , ω s , A s and the maximum value in the passband, ... B. A. Shenoi Copyright © 2006 John Wiley & Sons, Inc. 186 MAGNITUDE APPROXIMATION OF ANALOG FILTERS 195 7.0 6.0 4.0 5.0 1.0 3.0 2.0 0 0 0.2 0.4 0.6 0.8 1.0 n = 1 2 6 5 4 3 7 8 9...

Ngày tải lên: 29/09/2013, 21:20