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Working towards arbitrarily high precision structured light scanning. Plots are with 4, 8, 16, and 32 bins.
Why does the spectral center (weighted average bin) "hum" as you do a frequency sweep?
Update: it "hums" because the spectral center is one of the worst ways to do frequency estimation! web.archive.org/web/20071011064215/http://home.comcast.ne...
w = 512;
timeSteps = 64;
img = repmat(1:w, timeSteps, 1) / w;
img = img .* repmat((1:timeSteps)', 1, w);
img = cos(img * pi);
subplot(1, 3, 1);
image(img * 256);
xlabel('Position');
ylabel('Time');
colormap(gray(256));
axis square;
fftOut = fft(img);
goodBins = (timeSteps / 2) + 1;
amplitude = abs(fftOut((1:goodBins), :)) / timeSteps;
subplot(1, 3, 2);
image(amplitude * 256);
axis square;
xlabel('Position');
ylabel('FFT bin amplitude');
weightedSum = sum(repmat((1:goodBins)', 1, w) .* amplitude);
weightedAverage = weightedSum ./ (sum(amplitude) * timeSteps / 2);
subplot(1, 3, 3);
plot(weightedAverage);
axis square;
axis tight;
xlabel('Position');
ylabel('Spectral Center');
The ambassador visited the hospital located inside the Matlab Health Research Centre where he spent some time touring the diarrhoea, and maternal and child health wards.
Norwegian Ambassador HE Ms Sidsel Bleken and Norwegian Institute of Public Health officials visited Matlab Health Research Centre to learn more about Hepatitis E Vaccine HEV study led by icddr,b senior scientist Dr K Zaman, and different maternal and child health services and Matlab hospital. The visitors also went to the field to see how community health research workers are engaged in routine HDSS data collection in the villages. Photos: Rabiul Hasan
Scherk's surface is defined by exp(z)cos(x)-cos(y)=0. If z is treated as a complex number rather than a real and multiplied by exp(it) the solution to Re(exp(z)cos(x)-cos(y))=0 performs this curious dance act. The color denotes the imaginary part.
This set works nicely as a slideshow.
Rendered in Matlab using isosurfaces.
Black bars drawn recursively on a grid.
Although I often create images like this in Processing, I made this one in Matlab.
El jueves 17 de octubre, de 10 a 13.30 horas, en la Escuela de Ingeniería de Telecomunicación y Electrónica de la ULPGC, se va a celebrar un Seminario de Matlab, a cargo de Loren Shure, coautora de varios productos de MathWorks donde ha trabajado en los últimos 30 años.
Más información: www.ulpgc.es/noticia/seminario-matlab-cargo-loren-shure-c...
9. September 2017: Damit die Software Matlab die Messdaten dem jeweiligen Rad zuordnen kann, wird der Messbox die Radnummer zugeordnet.
Zum Artikel: extraenergy.org/main.php?language=de&category=product...
Foto: Angela Budde, www.ExtraEnergy.org
summer training institute for engineering students in Lucknow on JAVA, Embedded System, .NET, MATLAB. PLC SCADA, Industrial Automation, VLSI Design, CATIA, ANSYS, AutoCAD, Solidworks, Staad Pro at iNext Technology
SONY A580 broadband
DT 3.5-5.6/18-55 SAM II; 18mm @ f/11
Tiffen Yellow 15 filter
Single image IRG composition with Matlab
Matlab Upazila, Chandpur District, Bangladesh.
Photo credit: Rob Hope/REACH
If you use one of our photos, please credit it accordingly and let us know. You can reach us via Flickr or at reach@water.ox.ac.uk
Norwegian Ambassador HE Ms Sidsel Bleken and Norwegian Institute of Public Health officials visited Matlab Health Research Centre to learn more about Hepatitis E Vaccine HEV study led by icddr,b senior scientist Dr K Zaman, and different maternal and child health services and Matlab hospital. The visitors also went to the field to see how community health research workers are engaged in routine HDSS data collection in the villages. Photos: Rabiul Hasan
Scherk's surface is defined by exp(z)cos(x)-cos(y)=0. If z is treated as a complex number rather than a real and multiplied by exp(it) the solution to Re(exp(z)cos(x)-cos(y))=0 performs this curious dance act. The color denotes the imaginary part.
This set works nicely as a slideshow.
Rendered in Matlab using isosurfaces.
El jueves 17 de octubre, de 10 a 13.30 horas, en la Escuela de Ingeniería de Telecomunicación y Electrónica de la ULPGC, se va a celebrar un Seminario de Matlab, a cargo de Loren Shure, coautora de varios productos de MathWorks donde ha trabajado en los últimos 30 años.
Más información: www.ulpgc.es/noticia/seminario-matlab-cargo-loren-shure-c...
Country boats wade through water hyacinths in Matlab Upazila, Chandpur District
Photo credit: Rob Hope/REACH
If you use one of our photos, please credit it accordingly and let us know. You can reach us via Flickr or at reach@water.ox.ac.uk
Scherk's surface is defined by exp(z)cos(x)-cos(y)=0. If z is treated as a complex number rather than a real and multiplied by exp(it) the solution to Re(exp(z)cos(x)-cos(y))=0 performs this curious dance act. The color denotes the imaginary part.
This set works nicely as a slideshow.
Rendered in Matlab using isosurfaces.
Same photo as
www.flickr.com/photos/thomasfournier/243248064
but reprocessed by some homemade effects that I tried to implement with Matlab and that works surprinsingly good. If you're interested in these effects (it basically increases the contrast), please contact me...
"University of Texas at Austin"
"University of Texas School of Architecture"
"UT Austin"
"UTSOA"
"Additive Manufacturing"
"Matlab"
"Materials Lab"
"Student works"
"Spring 2014"
"University of Texas at Austin"
"University of Texas School of Architecture"
"UT Austin"
"UTSOA"
"Additive Manufacturing"
"Matlab"
"Materials Lab"
"Student works"
"Spring 2014"
London Voronoi partitioned by postcode, colored by the relative sizes of the polygons. Parks and rivers can be seen by the lower density of postcodes.
Curated by Kuth/Ranieri (Byron Kuth, Elizabeth Ranieri, Juta Cinco, Eliza Koshland) and UTSOA (Sydney Mainster, Charlton Lewis, Travis Cook, Jen Wong, Rachel Bullock, Dan Zou, Lana Denkeler, Mehreen Charania, Eric Lam, James Spence).
Photographed by Selina Ortiz, School of Architecture Visual Resources Collection Photography TA
"University of Texas at Austin"
"University of Texas School of Architecture"
"UT Austin"
"UTSOA"
"Additive Manufacturing"
"Matlab"
"Materials Lab"
"Student works"
"Spring 2014"
This project uses 360' panorama image to create a planet-like image. The project was intended to do simple border synthesis but add more fun to it.
Basically, the project has 3 main parts:
- panorama
- border synthesis
- stereo graphic projection
Panorama:
A set of 360'-view images are needed to create 360’ panorama. I decided to use Hugin software so that I can focus more to the extension part of the panorama. Moreover, it gave better results compared to my stitching Matlab program. Top left image is the result from Hugin using Equirectangular projection.
Stereo Graphic Projection:
Stereo graphic projection is a projection from sphere to 2D plane. In this case, I used south pole of the sphere to be projected to the center of the image (other point in the sphere can also be used but it will not give planet-like image). Another projection that yields similar result is polar transform. They are slightly different.
The sphere represents 360’ horizontally and 180’ vertically. Since the vertical field of view of the camera is small, it will leave blank space like picture in the bottom left. This can be fixed by extending the border to the size we want. (Another solution would be taking more than one row of panorama images to cover 180’ view, or using Fisheye Lens)
Border Synthesis:
I used texture synthesis based on Efros paper (Texture Synthesis by Non-parametric Sampling). Sample texture must be defined. I used some texture that is near the border as the sample. Then I need to search within the sample to find a similar texture to the patch and add it to the new texture. From image in the top left, I extended the border and get image in the top right. This image is then transformed using stereo graphic projection to get a filled-space planet as in the bottom right image.
Implementation:
Besides the panorama part, it is developed using Matlab.
Results:
The Old Main image shown above has some artifacts that is caused by pavement being closed to the border. Since I used texture near the border, the synthesized image contained some parts of the pavement. However, for simple texture like grass and sky, the overall result looks good. In addition, the simple object like pole can be regenerated pretty well. But if the object is too complicated, it may fail.
Some more results are in www.flickr.com/photos/46713076@N08/sets/72157623882874321/
I call my newest invention "The Smile-O-Tron 5k".
And here is what you do: Train you system (eigenfaces) on smiling people, then take an image with serious faces, find them, project them into face space and back, and tadaa: They are smiling! Happy days!
Below you can see the reconstruction error near the actual faces.
"University of Texas at Austin"
"University of Texas School of Architecture"
"UT Austin"
"UTSOA"
"Additive Manufacturing"
"Matlab"
"Materials Lab"
"Student works"
"Spring 2014"
Mit dieser Funktion wird häufig für die Leistungsfähigkeit von MatLab geworben. Das jedem Macintosh beiliegende, kostenlose Visualisierungstool Grapher kann sie — wie man sieht — aber auch sehr nett darstellen.
"University of Texas at Austin"
"University of Texas School of Architecture"
"UT Austin"
"UTSOA"
"Additive Manufacturing"
"Matlab"
"Materials Lab"
"Student works"
"Spring 2014"
INGLE, Vinay K.; PROAKIS, John G.. Digital signal processing using MATLAB: international student edition. 2 ed. Toronto: Thomson Learning, 2007. xv, 605 p. (BookWare Companion Series; PWS BookWare companion series (Thomson)). Inclui bibliografia e índice; il. tab. quad.; 24cm. ISBN 0495244414.
Disponível em:
instructors.coursesmart.com/9780495073116. Acesso em: 5 maio 2011.
Resumo:
This supplement to any standard DSP text is one of the first books to successfully integrate the use of MATLAB® in the study of DSP concepts. In this book, MATLAB® is used as a computing tool to explore traditional DSP topics, and solve problems to gain insight. This greatly expands the range and complexity of problems that students can effectively study in the course. Since DSP applications are primarily algorithms implemented on a DSP processor or software, a fair amount of programming is required. Using interactive software such as MATLAB® makes it possible to place more emphasis on learning new and difficult concepts than on programming algorithms. Interesting practical examples are discussed and useful problems are explored. This updated second edition includes new homework problems and revises the scripts in the book, available functions, and m-files to MATLAB® V7.
Notas de conteúdo:
1. Introduction
2. Discrete-Time Signals and Systems
3. The Discrete-Time Fourier Analysis
4. The z-Transform
5. The Discrete Fourier Transform
6. Digital Filter Structures
7. FIR Filter Design
8. IIR Filter Design
9. Applications in Adaptive Filtering
10. Applications in Communications
Palavras-chave:
TEMPO DE SINAIS E SISTEMAS; ANALISE DE FOURIER; TRANSFORMADA Z-; TRANSFORMADA DE FOURIER; ESTRUTURAS DE FILTROS DIGITAIS; FILTROS FIR; FILTROS IIR; PROCESSAMENTO DE SINAIS DIGITAIS.
CDU 621.391:519.6 / I51d / 2 ed. / 2007
A man bathes in a river next to a small houseboat in rural Matlab, Bangladesh. This water is contaminated by faeces from the human and animal populations living on the banks of the river.
Scherk's surface is defined by exp(z)cos(x)-cos(y)=0. If z is treated as a complex number rather than a real and multiplied by exp(it) the solution to Re(exp(z)cos(x)-cos(y))=0 performs this curious dance act. The color denotes the imaginary part.
This set works nicely as a slideshow.
Rendered in Matlab using isosurfaces.
"University of Texas at Austin"
"University of Texas School of Architecture"
"UT Austin"
"UTSOA"
"Additive Manufacturing"
"Matlab"
"Materials Lab"
"Student works"
"Spring 2014"
Optimal Control of Conditional Value-at-Risk in Continuous Time. Miller, Yang arxiv.org/abs/1512.05015 #q-fin
Norwegian Ambassador HE Ms Sidsel Bleken and Norwegian Institute of Public Health officials visited Matlab Health Research Centre to learn more about Hepatitis E Vaccine HEV study led by icddr,b senior scientist Dr K Zaman, and different maternal and child health services and Matlab hospital. The visitors also went to the field to see how community health research workers are engaged in routine HDSS data collection in the villages. Photos: Rabiul Hasan