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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');
3D Cross view- To view, sit back from your monitor 2 feet and place your index finger about 10 inches in front of your eyes and focus on your finger. This will cause your eyes to go comfortably cross eyed. Keep that same cross eyed focus and notice there are now 3 photos in the back ground. Do not let your eyes leave the cross eye as you look at the middle picture which has appeared. Now increase or decrease how much your eyes are cross eyed until the image pops into 3D. Your eyes will want to leave the cross eye, but fight that urge. This is an acquired skill and takes practice. Stop if it's uncomfortable.
This fine shanty, designed and built by Supreme Structures, is a classic that will soon feel like part of the family. It has interior beams, plenty of window, a bench and three ice holes and covers. Let’s call it a new home away from home.
Update: This shanty has been SOLD!
Turtle inflatable structure. A temporary, pop up structure ideal for concerts, gigs, performances, theaters, festivals and shows. It can also be used as a pop up shop, bar or catering space. #EvolutionDome #Venue #Stage #Festival #Alternative #Theater #CateringSpace #PopUpShop #PopUpBar #ShowSpace #Inflatable #Temporary #Structure #Awning
11-1-2016
Structure Fire
105 Josephine Rd, Garner
Polenta Elementary School
Mobile Unit
Cleveland FD, Clayton FD, 50-210 FD, 50-210 EMS, Johnston Co Fire Marshal.
11-1-2016
Structure Fire
105 Josephine Rd, Garner
Polenta Elementary School
Mobile Unit
Cleveland FD, Clayton FD, 50-210 FD, 50-210 EMS, Johnston Co Fire Marshal.
11-1-2016
Structure Fire
105 Josephine Rd, Garner
Polenta Elementary School
Mobile Unit
Cleveland FD, Clayton FD, 50-210 FD, 50-210 EMS, Johnston Co Fire Marshal.
The largest building in the area, the former ore separating bin at the Ibex Mine was built stout (16x16s, I think?)
11-1-2016
Structure Fire
105 Josephine Rd, Garner
Polenta Elementary School
Mobile Unit
Cleveland FD, Clayton FD, 50-210 FD, 50-210 EMS, Johnston Co Fire Marshal.
Tintagel Castle (Cornish: Dintagel, meaning "fort of the constriction") is a medieval fortification located on the peninsula of Tintagel Island, adjacent to the village of Tintagel in Cornwall, England, in the United Kingdom. The site was possibly occupied in the Romano-British period, as an array of artefacts dating to this period have been found on the peninsula, but as yet no Roman era structure has been proven to have existed there. It subsequently saw settlement during the Early Medieval period, when it was probably one of the seasonal residences of the regional king of Dumnonia. A castle was built on the site by Richard, Earl of Cornwall in the 13th century, during the Later Medieval period, after Cornwall had been subsumed into the kingdom of England. It later fell into disrepair and ruin. Archaeological investigation into the site began in the 19th century as it became a tourist attraction, with visitors coming to see the ruins of Richard's castle. In the 1930s, excavations revealed significant traces of a much earlier high status settlement, which had trading links with the Mediterranean during the Late Roman period.
11-1-2016
Structure Fire
105 Josephine Rd, Garner
Polenta Elementary School
Mobile Unit
Cleveland FD, Clayton FD, 50-210 FD, 50-210 EMS, Johnston Co Fire Marshal.
Caption/ALT TEXT: 2D chemical structure depiction of heroin
Created by NIDA
For more information on heroin, visit: nida.nih.gov/drug-topics/heroin
For more information on the chemical structure of heroin, visit: pubchem.ncbi.nlm.nih.gov/compound/Heroin
Palm House humidity
Kew's Palm House was built between 1844-48, designed by Decimus Burton and built by Richard Turner.
Kew began as an exotic garden for Lord Capel John of Tewkesbury. It was enlarged and extended by Augusta, Dowager Princess of Wales (widow of Frederick, Prince of Wales) - this extension included various structures designed by Sir William Chambers. In 1840 the gardens were adopted as a national botanical garden. Under Kew's director, William Hooker, the gardens were increased to 75 acres and the pleasure grounds, or arboretum, extended by 270 acres, and later to its present size (300 acres). The first curator was botanist John Smith (1798–1888).
11-1-2016
Structure Fire
105 Josephine Rd, Garner
Polenta Elementary School
Mobile Unit
Cleveland FD, Clayton FD, 50-210 FD, 50-210 EMS, Johnston Co Fire Marshal.
I used this to blog about the work breakdown structure, read on here: www.7aleva.com/2012/12/work-breakdown-structure.html
9-23-2016
Structure Fire
SouthMeade Dr
Thanksgiving FD, Archer Lodge FD, Wilson's Mills FD, JCEMS, Fire Marshal
11-1-2016
Structure Fire
105 Josephine Rd, Garner
Polenta Elementary School
Mobile Unit
Cleveland FD, Clayton FD, 50-210 FD, 50-210 EMS, Johnston Co Fire Marshal.
Inflatable structure by Hans Walter Muller
for an architecture exhibition at Arc En Rêve / Bordeaux, July 2012
Studio Ad Hoc / HWM