onstrates the following:
1. The definition's functionality employing HumanUI for the custom user interface.
2. Color based segmentation in manual and auto modes.
3. The evaluation of the definition's ability to handle different point cloud data sets.
This definition performs color based segmentation in two modes.
A manual mode, that implements the Delta-E CIE 2000 color difference formula, for targeted feature detection. An auto mode, that employs a simple RGB Color Range algorithm for quicker preliminary results.
RGB to XYZ to CIELab conversion and Delta-E scripts were based on Colormine's project code from github. Results have been compared and verified with the results of http://colormine.org/color-converter and http://colormine.org/delta-e-calculator/Cie2000.
Each stored class is charted and can be accessed through the UI, as shown at 2:30, where Delta-E CIE 2000, in CieLab color space, output results were found to be in perceptive conformity with human eyes, far superior to the preliminary RGB implementation.
Initial definition versions could process highly subsampled clouds in acceptable timings. Further research showed that employing the multithread processing of Volvox components, bundling the Delta E formula with the RGB to CIE lab color conversion script, per color segmentation calculations for a one million points point cloud would go down from 23 (c# script component) and 8 (vb script component) seconds to approx. 1 second (volvox script cloud component), thus allowing the segmentation of less subsampled point clouds.
I would like to thank Heumann A. and Zwierzycki M. who provided direct support with HumanUI and Volvox. Also Grasshopper3d forum users Maher S. and Segeren P., who contributed with Rhino viewport manipulation scripts.
More on Volvox:
http://papers.cumincad.org/cgi-bin/works/Show?_id=ecaade2016_171&sort=DEFAULT&search=ecaade%20volvox&hits=2629
http://www.food4rhino.com/app/volvox
http://duraark.eu/
HumanUI:
http://www.food4rhino.com/app/human-ui?page=1&ufh=&etx=
ColorMine:
https://github.com/THEjoezack/ColorMine…
arq, que se celebrará entre el 28 de Enero y el 1 de Febrero de 2013 en el Colegio de Arquitectos de Granada.
El taller está destinado a arquitectos, artistas y diseñadores, tanto como profesionales, como estudiantes de grado y posgrado, que, sin necesidad de haber tenido ningún contacto previo con entornos de programación o herramientas informáticas de dibujo paramétrico o generativo, están interesados en probar y experimentar con las opciones que nos pueden ofrecer a los diseñadores.
El taller está dividido en tres bloques:
Curso intensivo: del 28 de Enero al 30 de Febrero, en horario de mañana, de 10 a 14. Taller de proyectos: del 28 de Enero al 30 de Febrero, por la tarde, de 16 a 20; y el 31 de Febrero, durante todo el día.
Presentaciones: viernes 1 de Febrero, mañana y tarde.
Utilizaremos Grasshopper, el editor algorítmico asociado al software de modelado tridimensional y dibujo Rhinoceros, por su facilidad de aprendizaje, al tratarse de un entorno gráfico, facilidad de adquisición, al ser gratuito y haber disponible una versión de prueba de Rhinoceros también gratuita, y amplia difusión en los últimos años. Y lo emplearemos tanto como modelador, como conector entre otros softwares y varias disciplinas. Por este motivo, también utilizaremos algunos de sus plug-ins, como Geco, para análisis ambiental, Elk, para enlazarlo con OpenStreetMap o Kangaroo, para simulación de sistemas físicos.
Lo único que necesitas es un ordenador portátil (si no pudieras conseguir), hacer el ingreso con el importe correspondiente y mandarnos tus datos y el recibo bancario del ingreso a smartlabgranada@gmail.com. Puedes ver los detalles en el apartado de Inscripción. El resto del material, tanto software como hardware, lo ponemos nosotros.
Nuestro acercamiento a estas herramientas es entusiasta acerca del potencial creativo que pueden ofrecer a diseñadores y artistas, pero también crítico y especulativo. Nos alejamos tanto de una posición puramente formalista, como del estricto funcionalismo, a los que desde los últimos años frecuentemente se ha asociado a esta disciplina.…
Added by Miguel Vidal at 8:42am on January 19, 2013
mers considering extreme sports reject mainstream retailers and like to check out small stores rather of at chains plus malls. Several smaller retailers discuss trends in sports shoe sales. http://skateszone.com/
Though athletic shoes and sports stores and from doorways retailers have reported somewhat uptick in footwear sales due to the increase in extreme sports, the particular beneficiaries inside the trend are independent surf and skate niche stores.
Some West Coast surf and skate shops stated teenagers and even more youthful Generation Xers are not only rejecting traditional sports, but they're also shunning mainstream retailers and malls meant for smaller niche shops transporting hard-to-come-by brands.
Eddie Miyoshi, district manager at Atomic Garage, a 3-store chain situated in Gardena, Calif., stated the soaring recognition of skateboard footwear has boosted the retailer's total footwear business 20-thirty percent this year, rather of '95.
Skate footwear presently represent 80-90 % of Atomic Garage's shoe sales, while couple of years back, Dr. Martens and Timberland drove the retailer's footwear business.
Like many retailers, Miyoshi pointed to Airwalk since the trend's catalyst.
However, if Airwalk broadened its distribution to larger chains, which are frequently located in malls, only a few skate shoe customers adopted. Rather, many youthful males have switched for your skate shops for additional elusive brands like Etnies, Duffs, and Electricity Footwear by Circus. By refusing to market bigger retailers or sports stores, these brands are increasing their cachet among youthful consumers.
"Kids don't want stuff which have been within the shops,In . Miyoshi added.
Searching ahead, Miyoshi forecasted skate shoe sales will remain strong through spring '97 provided "the [hot] vendors don't auction other [non-particularly shop] retailers."
"Skaters and non-skaters are rebelling against mainstream retailers so on to surf and skate shops for many looks," echoed Mark Richards, co-online sources Val Surf, a 3-store chain situated in North Hollywood, Calif. Soaring sales of skate footwear have driven total footwear receipts up 25 percent this year rather of '95.
"The quantity of that increase might be connected while using exposure of maximum games? I am unsure. [Skate footwear] may also be actually the think about the moment,In . Richards acknowledged. And in relation to getting this right look, youthful customers can be very picky.
"Skateboard footwear is a huge category for people, but we're not able to own the brands, Etnies, Duffs, Electricity and Nice, simply because they won't sell us," stated Mark Anderson, buyer at Chick's Sports, a six-store chain in Covina, Calif. "We have people coming every single day requesting them." Consequently, skate footwear have consistently ongoing to obtain about 5 % of Chick's overall footwear business. http://skateszone.com/the-top-8-best-skateboards-for-beginners-reviews-2017/
Nonetheless, some outdoors, niche sports and sports retailers are noting the growing recognition and coverage of maximum sports will receive a modest impact on footwear sales. Trailrunning footwear and approach/outdoors crosstrainers will be the two groups benefiting the very best inside the recognition. Like the skate shoe business, some retailers realize that styling instead of function frequently drives sales of individuals footwear.
"At this time the merchandise is a lot more visual than function," stated Chet James, gm of Super Jock 'N Jill, Dallas, speaking about trailrunning footwear. Still, James noted the current hype over adventure sports helps draw more customer traffic. "The marketing campaigns and media help bring growing figures of people in, nonetheless they frequently occasions day an issue that increases results on their own account,Inch he conceded.
John Wilkinson, executive vp inside the 85-store chain Track 'N Trail, Eldorado Hillsides, Calif., stated the shop has "seen some activity in approach footwear," but he requested the amount of consumers depend in it commercially sport. And, instead of accelerating total footwear business, Wilkinson speculated elevated sales of approach footwear and trailrunners are gnawing away at traditional hiking shoe and boot volume.
But Dan Bazinet, president of Overland Exchanging, a 34-store chain situated in Westford, Mass., believes the company-new looks have breathed existence for the wilting hiking boot category. "[Approach-type footwear] don't represent the lion's participate the hiking market, nonetheless they have elevated the hiking business and provided us extra sales," Bazinet stated.
He designated Timberland's Treeline Series and Rockport's Leadville line as strong performers. Unsurprisingly, he noted the company-new looks are attractive to youthful consumer base than traditional hikers.
For that month of June, sales of men's hikers were up 49 percent at Overland, rather of June '95, while sales of women's hikers were up 17 % for that month. Bazinet also attributed elevated sales that shops walked inside the hiking business, departing that business for that specialists.
Some retailers draw a good example concerning the hiking boom of two yrs ago combined with the current extreme sport phenomenon. "Plenty of bigger chains will get a specific percent in the industry while [extreme] sports remain a fad because they are selling cost-point type gear," described Steven Carre, assistant hard goods buyer at Adventure 16, a six-store chain situated in Hillcrest.
"However individuals [true enthusiasts] will say `we need real gear' and may shown up at us. That will help us after a while. What Size Skateboard good for an 3 4 5 6 7 8 9 10 11 12 13 14 year old
…
y having to make custom size windows, and instead of having to re-draw them each and every time, I thought I would utilize the power of Grasshopper to create all the scalable line work and dimensioning, so that now all I have to do is type the dimensions in a neat and tidy Human UI window, hit 'BAKE!!!', and poof!
The GUI has the ability to parameterize width, height, depth, stile width, top rail thickness, bottom rail thickness, glass stop size, glass stop reveals on both the interior and exterior sides. This definition also has the ability to change the glass stop profile curve. In it's current state, the curve's preview is turned off, but one could turn it on, bake it, alter it, or create a whole new curve and set the curve that way.
Most of you seasoned Grasshoppers will probably look at my definition, and think to yourselves, "what a tangled mess!", and you know what? It probably could be rewritten a whole lot cleaner and more efficient. But as it stands now, it works pretty good. The only issue that I'm still trying to figure out, is that when I hit the 'BAKE!!!' button, it bakes the curves 10 times, and the dimensions 6 times. I know it has to do with the way the data is brought into HumanUI, but I can't figure it out. The easy temporary fix is to just bake all the iterations, and then once back in Rhino, select all duplicates, and delete.
Once the window has been baked into Rhino, the only thing I have to draw in is the rectangles in the vertical and horizontal section views, as that is really simple to do and we vary glass thicknesses and offsets a ton, I feel it's just easier to finalize in Rhino.
Then, it's just a matter of opening up a new layout, add my title block, add a 1-detail view, and my annotations, and it's complete. Takes me all of five minutes to do a job that used to take me 30 minutes to an hour!
Requisites:
-Fab Tools GH plug-in (for the Advanced Bake component)
-Human UI GH plug-in (for the GUI)
Disclaimer: I am a complete Grasshopper noob. If this definition can be improved/expanded/made better in any way, please feel free to contribute. I look forward to any and all feedback and constructive criticism! Thank you!…
Added by Ryan Greever at 7:08am on November 21, 2016
sinergetici associati alla compresenza simultanea di differenti strumenti di analisi e digital design all'interno di un processo di progettazione in svolgimento. I partecipanti utilizzeranno Grasshopper (modellatore parametrico per Rhino): l'uso di questo editor grafico di algoritmi si integra alla perfezione con gli strumenti di modellazione di Rhinoceros 3D espandendo le possibilità di corstruire modelli parametrici altamente complessi. Per generare una complessità simile saranno utilizzati collegamenti live ai diversi programmi elencati di seguito: . Autodesk Ecotect Analysis via GECO . FEA software GSA via SSI Durante questi intensi 3 giorni, i partecipanti impareranno il workflow dei plug-ins con l'aiuto di esempi esplorando una panoramica dei differenti software, le possibilità di testare le performances di un progetto o l'uso di strumenti addizionali non legati ad un singolo sistema (es. accentuazione, formazione, reazione parametrica) [english text] The focus of the workshop is to integrate and correlate the synergistic effect associated with simultaneous presence of different digital design- and analysis tools in an ongoing design process. The main attention is set on easy to handle interface , which should be used at a early stage of conceptual design to respond to external and internal influences in a intelligent and sustainable way. Participants will use the software Grasshopper as a parametric modeling plug-in for Rhino. The usage of this graphical algorithm editor tightly integrated with Rhino's 3-D modeling tools open up the possibility to construct highly parametrical complex models. To generate this complexity we will use live linkages to several programs listed below: . Autodesk Ecotect Analysis via GECO . FEA software GSA via SSI In this 3 intense days, the participants should learn the workflow of the plug-ins with the help of examples and get an overview of the different software's, there possibilities for evaluating the performance of a design or the usage of additional tools to be not chained to a single system . (e.g. parametrical accentuation, parametrical formation, parametrical reaction) [.] Dettagli : Istruttori: Thomas Grabner & Ursula Frick from [uto]. lingua del corso: inglese (saranno disponibili tutor di supporto ma è richiesta una conoscenza di base della lingua unglese).
Quote d'iscrizione (min 12 max 20 posti): educational* : € 280.00 + iva professional: € 450.00 + iva * studenti, docenti, ricercatori, dottorandi e laureati fino a un anno dalla data di laurea OFFERTA EARLY BIRD SPECIAL: le prime 5 domande di iscrizione pervenute entro il 31 Dicembre 2011 avranno diritto ad una quota di iscrizione scontata del 20% Quote d'iscrizione E.B. SPECIAL: E.B. SPECIAL educational* : € 224.00+ iva E.B. SPECIAL professional: € 360.00+ iva. ulteriori info, dettagli e iscrizioni: http://www.co-de-it.com/wordpress/nexus-advanced-grasshopper-workshop-with-uto.html…
d the workshop PDF from this link: http://goo.gl/bcvRNH Download event poster from this link: http://goo.gl/Q0KWCM Brief: Cairo is filled with barriers controlling people movements, suppressing them as well as detaining green and public spaces to the extent that most people have been taking these spaces for granted. Public spaces have been for a while the periphery of our daily life. We will explore in this workshop how we can manipulate and alter people’s perception and direct their attention to how these spaces are integral for city life. This exploration will be backed up by intensive technical tutorials introducing computational design and fabrication techniques and tools mainly Rhino, Grasshopper, Geco and Ecotect. Not only will this be the typical technical workshop, but rather you will also have the chance to be guided step by step on how these tools are used through out different design stages in a real world scenario. Design prototypes will be produced through 3D printing, the main workshop output will be a fabricated one to one functional model for one of the designs using our new in-house CNC machine. Tutors (check the PDF for bio): Olga Kovrikova, MArch DIA Alexandr Kalachev, MArch DIA Karim Soliman, MArch DIA Islam Ibrahim, MArch DIA Sherif Tarabishy, B.Sc. AAST Application: Application deadline 1 September 2013 ** For students (undergrad / Master), teachers and PhD proof of status is required (university ID with a date or a certificate of enrollment) to apply for the students package. Packages (choose one of the following in the application form): 1. Standard registration Course fee is 4250 EGP For Students 3500 EGP 2. Early bird registration discounted fee For Professionals 3750 EGP For Students 3000 EGP ** Early bird offer ends on 14 August 2013 3. Group registrations discounted fee (5 or more) For Students 20% off - You will have to fill out an application form here: http://goo.gl/0QxAga - You will need to submit your CV and Short Portfolio (max. 10 MB) to info@morph-d.com, email subject: “Morphing Norms Application” (we will decide if you are eligible for an early bird discount or not based on the date of your email submission) - We will confirm receiving emails from all applicants. Successful applicants will be contacted 5 days after each deadline (early bird/final) and will have to confirm participation within 3 days, if they fail to do so, places will be given to others on the waiting list. - A maximum of 30 applicants will be selected.
…
difference consists of.
An Evolutionary Solver/Genetic Algorithm is an implementation of Metaheuristics. Metaheuristics tend to be flexible solvers, applicable to a wide variety of problems, fairly easy to implement, but slow. Other examples of Metaheuristic algorithms would be Random Search, Scatter Search, Simulated Annealing and do on. These algorithms are often modelled on physical or biological processes.
Simulated Annealing for example simulates the physical process of annealing (who'd have thunk it), which is basically the slow cooling of a material which allows it to settle into a crystalline lattice, i.e. a low energy distribution of all the atoms. I'm currently adding an SA solver to Galapagos, and in fact just yesterday managed to get the first successful run: http://www.youtube.com/watch?v=VWtYLv-4oP0
Metaheuristics are especially useful for those cases where little is known about the problem ahead of time. If the problem search-space is mathematically well defined (differentiable, especially), then you can use more targeted algorithms such as the Newton-Raphson method, Pareto-search or Uphill search. You can still use these methods on non-differentiable search-spaces, but it involves sampling the local region to death to get an estimate of the differential. This can be a very costly enterprise, especially in high dimensional search-spaces. In a two-dimensional search-space you'll need 3 to get a lame estimate and 4 to get a halfway decent estimate and 8 to get a good estimate. In three-dimensional search space you already need 26 samples, and the number of samples grows exponentially with higher dimensions.
If you have a specific problem you're trying to solve, Metaheuristics are probably not the best solution, even though they may be easiest to program. Rhino uses something akin to Newton-Raphson for certain problems and that's fast enough to run in real-time.
Divide-and-Conquer algorithms are also quite popular. Sometimes they are called Binary-Search or Tree-Search algorithms as well. Their basic premise is to sample the search-space at a few intervals (but enough to capture the needed detail), then find two neighbours with promising values and sample again in between these two. Then repeat. Each new iteration typically doubles accuracy, which is great because then you only need ~30 ~40 iterations to get an answer as good as possible with double-precision floating point accuracy. However not all problems lend themselves well to this sort of search and in higher dimensions it starts getting slow with disconcerting alacrity.
--
David Rutten
david@mcneel.com
Poprad, Slovakia…
Added by David Rutten at 1:54am on August 15, 2011
.
For my project I want to make a sphere or spherical-like shape and pack it with circles of varying sizes. The circles all have to touch each other and thus on a point where three circles 'sort of' meet, there can only be three circles. This is shown in the second picture I have attached, a 2D circle packing made by Daniel Piker. So basically what I want to achieve is having the second picture projected on a 3d surface, that I can also edit. Also I would like to be able to change the size and amount of the circles that populate the surface. This means that I would be able to say 'there should be 30 circles with a radius of 2, 40 circles with a radius of 3 and 50 circles with a radius of 4, put them on this particular shape'.
As I've just started the project I haven't done so much research yet. What I have found is for example this Kangaroo definition of circle packing in 2D: http://www.grasshopper3d.com/group/kangaroo/forum/topics/circle-packing-definition?xg_source=activity
It is very beautiful and does exactly what I want to achieve, except that it is in two dimensions. I also have to say that I feel pretty confident working with both Grasshopper and Rhino, but not really with Kangaroo. I have used it a few times but not extensively.
So what I'm wondering is, how could I best approach this project? I looked into the concept of 'circle packing' and I noticed that it can be approached very mathematically. As I am an architecture student I don't know much about the math behind the geometry (although I do think it is very interesting) and thus I'm wondering if I will be able to achieve what I want to achieve. Also, do you think I could best approach the project in Kangaroo and do you think it is realistic for me to think I could finish the project? I'm just trying to see if I'm not going to try to tackle a problem that is very difficult to solve even for skilled mathematicans or something. Sorry for the long and perhaps vague read, but I would be very happy with any sort of input you might have on my problem!
Thanks in advance!
…
Il corso ha una durata di 21+3 ore, dove le 3 ore extra rappresentano la prima lezione, già disponibile per coloro che ne faranno richiesta.
Il corso viene fatto in collaborazione con l’Accademia Italiana Inrender
Modalità:
Il corso sarà trasmesso in streaming in diretta nei giorni indicati, ma sarà possibile accedervi anche fuori da determinato orario. La lezione prevede la spiegazione della logica di Grasshopper e esempi pratici di utilizzo. Gli studenti verranno invitati a partecipare ponendo domande e chiedendo chiarimenti su aspetti ritenuti interessanti o non appieno compresi.
Gli esercizi svolgeranno una parte particolarmente rilevante all’interno del percorso di studio: anzichè acquisire solo concetti teorici, gli studenti avranno un approccio più mirato e pratico alla modellazione generativa e parametrica.
Caratteristiche del corso:
- Lezioni in diretta streaming- Riassunto in pdf degli argomenti trattati- Esercizi e correzione esercizi relativi alle tematiche trattate- Contatto diretto con il docente per la durata del corso- Registrazioni e file delle lezioni disponibili sul sito per un anno dal termine del corso.- Certificazione rilascita da un ART (Authorized Rhinoceros Trainer)
Corso Grasshopper online: 21 ore Calendario: ogni martedì e giovedì dalle 18.30 alle 21.30
Grasshopper è un prodotto gratuito sviluppato dalla McNeel per la modellazione di superfici matematiche NURBS attraverso l’uso di relazioni tra algoritmi
Il corso tratterà gli argomenti di base da cui sviluppare un approccio generativo tramite le funzioni dell’applicativo
Per info sul programma e modalità, visita la nostra pagina
http://www.mandarinoblu.com/wp-content/uploads/2017/03/venezia.jpg 450w" sizes="(max-width: 300px) 100vw, 300px" />
http://www.mandarinoblu.com/wp-content/uploads/2011/09/ART.jpg 330w" sizes="(max-width: 300px) 100vw, 300px" />
http://www.mandarinoblu.com/wp-content/uploads/2017/03/serpentine.jpg 350w" sizes="(max-width: 300px) 100vw, 300px" />
Contatti
Contatta il docente e rivolgi a lui tutte le tue domande.…