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- =='''INTERPLAY OF IMAGES AND FILTERS''' == ...did images look so bright? Until Professor Boutin introduced the topic of "Filters" in her ece 438 class,i had never thought of images the way i do now,before3 KB (426 words) - 06:03, 14 October 2009
- %%%%%%%%%%%%%%%%%%%%%%%%%%% CODE FOR THE AVERAGE & EDGE DETECTOR FILTERS %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%787 B (108 words) - 06:06, 14 October 2009
- This page will explore the use of some non-linear filters for face-enhancement, such as the Perona-Malik filter that preserve sharpne235 B (33 words) - 22:21, 6 December 2009
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2 KB (316 words) - 00:15, 30 November 2015
- == ''' Digital Filters: An Introduction ''' == ...filters over analog ones is that digital filters can satisfy criteria for filters far better than analog ones. This slecture hopes to share characteristics i6 KB (897 words) - 16:44, 7 December 2017
Page text matches
- :"Designing Perceptually-Based Image Filters in the Modulation Domain"5 KB (656 words) - 14:36, 4 May 2011
- [[Category: Filters]] ==Types of Filters==462 B (55 words) - 17:27, 23 April 2013
- ==[[ECE 301 Fall 2007 mboutin Filter Types|Types of Filters]]==264 B (30 words) - 13:07, 9 December 2008
- ...frequency of a filter (<math>\omega_c > 0</math>). (For instance, lowpass filters are nonzero in the range <math>\omega \in [-\omega_c, \omega_c]</math>.)2 KB (406 words) - 11:08, 12 November 2010
- ...438_Fall_2009_mboutin_plotCSFTofbasicfilters|Plot of CSFT of some basic 2D filters]]7 KB (1,067 words) - 12:05, 25 June 2010
- ...of signals and systems. They are of special importance when implementing filters. These equations are of the form:2 KB (401 words) - 17:16, 21 April 2013
- ...frequency of a filter (<math>\omega_c > 0</math>). (For instance, lowpass filters are nonzero in the range <math>\omega \in [-\omega_c, \omega_c]</math>.)1 KB (178 words) - 19:31, 23 November 2008
- ...continuous time filters (represented in Laplace space) into discrete time filters (represented in z space), and vice versa. To do this, you can use the follo3 KB (537 words) - 17:27, 3 December 2008
- I was just wondering how people are implimenting the filters. It seems that you need a 2D convolution function. So you can take the 2d f10 KB (1,738 words) - 22:44, 7 April 2008
- * DT implementation of CT systems/filters5 KB (643 words) - 11:55, 6 August 2009
- * [[DT implementation of CT filters]]1 KB (118 words) - 01:11, 30 July 2009
- * Of course, filters are not ideal in the real world, and instead of a constant A in the pass-ba ==Filters in MATLAB==7 KB (1,251 words) - 11:54, 21 September 2012
- ...d signal must be quanitized before discretization. This is because digital filters are limited in what numbers they can represent. This depends on the number ...periodic with respect to <math>2\pi</math>. This is because discrete time filters are periodic with respect to <math>2\pi</math>. The reason can be seen belo8 KB (1,452 words) - 06:49, 16 September 2013
- The problem with analog low pass filters is that higher the order, the more resistors, capacitors, and op-amps are r5 KB (840 words) - 19:08, 22 September 2009
- =='''INTERPLAY OF IMAGES AND FILTERS''' == ...did images look so bright? Until Professor Boutin introduced the topic of "Filters" in her ece 438 class,i had never thought of images the way i do now,before3 KB (426 words) - 06:03, 14 October 2009
- %%%%%%%%%%%%%%%%%%%%%%%%%%%% CODE FOR THE AVERAGE & EDGE DETECTOR FILTERS %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%782 B (107 words) - 06:01, 14 October 2009
- %%%%%%%%%%%%%%%%%%%%%%%%%%% CODE FOR THE AVERAGE & EDGE DETECTOR FILTERS %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%787 B (108 words) - 06:06, 14 October 2009
- ...FFT of Lena looks like.</u></big><br><br> We will look at some simple 3X3 filters that are then convolved with the original image to create a filtered image. <big><u>Let's look at a few other filters briefly:</u></big>8 KB (1,397 words) - 11:23, 18 March 2013
- =DSFT of some basic filters=1 KB (163 words) - 12:50, 26 November 2014
- This page will explore the use of some non-linear filters for face-enhancement, such as the Perona-Malik filter that preserve sharpne235 B (33 words) - 22:21, 6 December 2009
- ...of things to create a digital sound, modification of images and designing filters,to name a few.Lectures are little difficult to understand,but if one pays a ...al applications. For example we would learn the math behind digital image filters in class, then in lab we would apply them to real digital images in MATLAB17 KB (3,004 words) - 08:11, 15 December 2011
- ...ets of a fixed number of samples. These frames are sent through a bank of filters which divide the original frequency spectrum of the signal into 32 sub-band6 KB (1,003 words) - 14:33, 11 December 2009
- ...nderstanding of boundary conditions, and examples of linear and non-linear filters. Examples of Image Filters:5 KB (811 words) - 16:19, 19 December 2009
- ...k that I did, incorporated the understanding of average and edge detecting filters which I got to know in details in ECE 438.2 KB (296 words) - 12:59, 16 April 2010
- ...k that I did, incorporated the understanding of average and edge detecting filters which I got to know in details in ECE 438.<br><br>2 KB (299 words) - 14:54, 16 April 2010
- 1 –Image Processing: Morphology, Filters, Color, Shape2 KB (279 words) - 10:11, 10 August 2010
- ...g of continuous-time signals. Discrete-time nonlinear systems: median-type filters, threshold decomposition. System design examples such as the compact disc p3 KB (394 words) - 07:08, 4 May 2010
- <br> It's a pretty cool filter!!!And pretty effective too: a lot of filters have too many side rings that cause a distortion in the signal when the sig <br> We then created a whole set of low pass filters with <math> \omega = \frac{i }{N}2\pi </math> , for <math>i \in \{ 013 KB (2,348 words) - 13:25, 2 December 2011
- *[[ECE_438_Fall_2009_mboutin_plotCSFTofbasicfilters|Plot of some basic image filters]]9 KB (1,221 words) - 11:00, 22 December 2014
- ...filer with band-pass characteristics (Filter B). The behavior of these two filters will be further studied when we return from Fall Break. Enjoy your time off867 B (122 words) - 16:21, 8 October 2010
- Today in the lecture, we continued talking about filters and filter design using the transfer function. It seems like many students1 KB (174 words) - 03:53, 21 October 2010
- ...peat periodically every <math>2 \pi</math> when considering discrete-time filters.2 KB (260 words) - 12:42, 22 October 2010
- ...ive outputs of these two systems as the inputs to a pair of length two FIR filters with impulse response, g1[n] and g2[n] respectively, as shown in the diagra That is, determine length-2 FIR filters g1[n] and g2[n] so that output is the input delayed by one (for any input).3 KB (479 words) - 10:42, 11 November 2011
- a. Note that systems g1 and g2 are Length-2 FIR filters which are of the form –4 KB (643 words) - 04:31, 1 November 2010
- Q4. Given the impulse response, compute the transfer function of filters.3 KB (462 words) - 10:42, 11 November 2011
- *[[ECE_438_Fall_2009_mboutin_plotCSFTofbasicfilters|Plot of some basic image filters]]808 B (107 words) - 10:56, 29 November 2010
- ...from Vuvuzelas, we need to implement a couple of high frequency band-stop filters. The audio signal will go through the filters connected in series and the output will be a much better audio signal with3 KB (409 words) - 08:53, 11 November 2013
- *[[ECE_301_Fall_2007_mboutin_Filter_Types|Types of filters]]6 KB (818 words) - 06:12, 16 September 2013
- ...CE 301 Bouton Notes|sampling and conversion between CT/DT signals]]. Filters are also used to sort the main trend of the signal from the noise (common i ...on the changes and only stimulate when necessary. This work requires filters for the biological signals as well systems to interpret these signals. &nbs17 KB (2,368 words) - 10:53, 6 May 2012
- ...approximation of an ideal filter, we moved on to another way of designing filters in today's lecture. More specifically, we saw how one could shift and windo1 KB (164 words) - 06:30, 11 September 2013
- ...ilter is not separable, we were able to write it as a sum of two separable filters.2 KB (213 words) - 06:32, 11 September 2013
- Today we studied more filters. In particular, we saw how to sharpen using an unsharp mark. *[[ECE_438_Fall_2009_mboutin_plotCSFTofbasicfilters|plot of the filters I discussed in class]]1 KB (163 words) - 06:32, 11 September 2013
- *[[ECE_438_Fall_2009_mboutin_plotCSFTofbasicfilters|plot of the filters I discussed in class]]1 KB (157 words) - 06:33, 11 September 2013
- Therefore the filter can be separate into two 1-D filters.3 KB (355 words) - 13:42, 4 December 2011
- ...inter-recalibration can further benefit from probabilistic noise-reducing filters such as the Bayesian or Kalman filter.8 KB (1,176 words) - 15:15, 1 May 2016
- '''3.Filters'''1 KB (174 words) - 11:34, 11 March 2013
- ** 2-D Filters2 KB (246 words) - 07:21, 26 February 2014
- I was just wondering how people are implimenting the filters. It seems that you need a 2D convolution function. So you can take the 2d f10 KB (1,756 words) - 08:05, 9 April 2013
- ::↳ 2-D Filters2 KB (278 words) - 07:26, 26 February 2014
- ::↳ 2-D Filters10 KB (1,726 words) - 07:26, 26 February 2014
- 1. Use the signal generators and filters in the lab to generate and filter noise and various types of periodic signa14 KB (2,228 words) - 12:03, 15 January 2014
- We need a high pass filter that filters our everything below 60 Hz.6 KB (1,018 words) - 12:18, 30 September 2013
- *[[ECE_438_Fall_2009_mboutin_plotCSFTofbasicfilters|Plot of some basic image filters]]4 KB (471 words) - 19:34, 9 February 2015
- ...pling, or comparison with a threshold in your design, precisely define all filters, sampling times, and threshold values. ...pling, or comparison with a threshold in your design, precisely define all filters, sampling times, and threshold values.15 KB (2,507 words) - 01:05, 5 November 2013
- ...pling, or comparison with a threshold in your design, precisely define all filters, sampling times, and threshold values. ...pling, or comparison with a threshold in your design, precisely define all filters, sampling times, and threshold values.17 KB (2,710 words) - 10:07, 5 November 2013
- ...ilter is not separable, we were able to write it as a sum of two separable filters. ...E_438_Fall_2009_mboutin_plotCSFTofbasicfilters|Plot of CSFT of basic image filters]].3 KB (367 words) - 07:27, 15 November 2013
- ...9_mboutin_plotCSFTofbasicfilters|Plot of frequency response of basic image filters]]2 KB (240 words) - 07:14, 22 November 2013
- Therefore the filter can be separate into two 1-D filters.4 KB (518 words) - 00:11, 11 December 2013
- ...tering at this point, so let's apply a filter to the centroids matrix that filters out any sets of centroids that do not appear in at least 5 consecutive fram11 KB (1,762 words) - 09:42, 13 February 2014
- We need a high pass filter that filters out signals below the frequency 60Hz.3 KB (564 words) - 06:24, 10 October 2014
- ...9_mboutin_plotCSFTofbasicfilters|Plot of frequency response of basic image filters]]2 KB (246 words) - 12:37, 1 December 2014
- Therefore the filter can be decomposed to two 1-D filters. Therefore the filter can be separated into two 1-D filters.10 KB (1,181 words) - 16:07, 2 December 2014
- *Frequency response (filters)8 KB (1,126 words) - 11:37, 8 May 2015
- ...By changing the number of samples used (window length) we can develop such filters that<br /> the Quality index is constant, Constant Q Transform!4 KB (655 words) - 23:26, 22 November 2015
- Therefore the filter can be decomposed to two 1-D filters. Therefore the filter can be separated into two 1-D filters.10 KB (1,157 words) - 22:56, 2 December 2015
- ...e, a process called Gaussian smoothing. Laplacian filters being derivative filters, are sensitive to noise and thus this process comes in handy, although it r2 KB (258 words) - 04:20, 28 November 2016
- | [[Digital Filters: An Overview on Design Points and Considerations]]3 KB (421 words) - 16:18, 10 December 2017
- The image below is when the two filters results are added together to create an accurate representation of all of t7 KB (1,184 words) - 20:31, 23 April 2017
- ...nd cutoff values to achieve the exact filter response desired. Very simple filters, such as the HPF and LPF discussed in 438 are critical to achieve a particu When using four or more filters on my modern computer, the computing experience begins to get umbearable as6 KB (1,048 words) - 16:58, 24 April 2017
- ...ted to only adjusting your picture brightness and contrast, and apply some filters to it before you upload it to your Instagram. NO! It’s far more than that5 KB (799 words) - 20:12, 9 December 2017
- ...ted to only adjusting your picture brightness and contrast, and apply some filters to it before you upload it to your Instagram. NO! It’s far more than that5 KB (799 words) - 00:59, 4 December 2017
- == ''' Digital Filters: An Introduction ''' == ...filters over analog ones is that digital filters can satisfy criteria for filters far better than analog ones. This slecture hopes to share characteristics i6 KB (897 words) - 16:44, 7 December 2017
- ...s; design of finite impulse response and infinite impulse response digital filters; processing of random signals. Speech processing; vocal tract models and ch12 KB (1,702 words) - 20:48, 9 April 2018
- ...he intensity at different frequency, it can be extremely useful when using filters. For example, when receiving a signal from FM radio, it is very hard to det3 KB (555 words) - 22:02, 2 December 2018
- ...ilters, <math>h_0[n]</math> and <math>h_1[n]</math>, and the two synthesis filters, <math>f_0[n]</math> and <math>f_1[n]</math>,form a Quadrature Mirror Filte4 KB (738 words) - 15:34, 19 February 2019
- ...w pass filter is two-fold. Firstly, it is one of the simpler (and popular) filters to implement at this scale. Secondly, the low-pass filter is versatile enou Traditionally, low pass filters have been used on images taken in space to smoothen out noise from sharp li7 KB (1,006 words) - 19:22, 7 April 2019
- ...l let you analyze visual Fourier Transforms, intelligently apply frequency filters, and gain a better understanding of some of the many applications of this t Congratulations! You just applied Fourier Transforms and filters to real-world applications! If you want, go ahead and try recording your vo6 KB (1,077 words) - 20:29, 7 April 2019
- ...ff frequency of <math>\frac{1}{2T_2}</math> for <math>x_2[n]</math>. These filters ensure that no aliasing occurs during the initial sampling of <math>x(t)</m16 KB (2,611 words) - 14:11, 12 November 2019
- be used to draw conclusions about LTI systems and digital filters. This topic assumes some basic knowledge of the z-transform and signal proc ==Z Transform and Digital Filters==6 KB (1,040 words) - 00:57, 2 December 2019
- Different filters have different usages: they can be used to smooth images, sharpening images ...n probably is the most widely known edge detection method. The process and filters are shown below:4 KB (624 words) - 09:11, 6 December 2019
- ...hese could be used in class demonstrations to describe how the vocal tract filters input signals.5 KB (849 words) - 02:10, 10 December 2019
- ...ses, bandwidth is limited by filters, such as the one in a car radio, that filters out frequencies that are not very close to, say, 104.5 Megahertz. In the im4 KB (707 words) - 23:06, 6 December 2020
- ...g can be prevented with a variety of anti-aliasing tools, such as low-pass filters that filter out high frequencies.3 KB (444 words) - 23:32, 6 December 2020
- ...y techniques have been created to reconstruct images. These reconstruction filters enable the restoration of some data in images. An example of reverse aliasi4 KB (610 words) - 00:55, 7 December 2020