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I discovered this folding algorithm that produces an approximation of a parabola. This is an example of a recursive algorithm that doesn't create a fractal.
The pattern comes from the relationship between the different pleats; because of their inherent geometry and the starting conditions, certain angles are created during the folding process, which when finished form the outline of the parabola. I haven't figured out the math behind it, but it has something to do with the angle relationships that allow the paper to fold flat. It also has something to do with the fact that these pleat intersections can be treated as positive vector sums, and one of the vectors is always a constant.
Starting with a vertical pleat field, you put a horizontal pleat across it, spread the vertical pleat, and readjust the next part so it folds flat... It seems to produce a parabola, for some reason. I'd love it if somebody could figure out the math behind this...
The vertical pleats are all the same size.
Handheld, Samsung Nexus Prime, ICS
In-phone, 3 exposure combination
The Ittiam High Dynamic Range (HDR) algorithm for Mobile and Cellphone cameras, Smartphones and Tablets intelligently selects the exposures of the constituent images and combines the details using advanced de-noising, anti-ghosting and tone mapping techniques to obtain high quality HDR images. The HDR algorithm is part of Ittiam's Imaging SDK. The photograph was taken using an Android camera application based on Ittiam's Imaging SDK. All processing for this photograph was done in phone, unless explicitly noted.
For further information, please see Ittiam's HDR Algorithm Web Page
When you've written some flood fill code, everything looks like a coloring book.
Made with processing.org .
Ro m theta sigma : 5 -0.049 100 1 \ T N Xo : 98 50 100 nboot: 800 b792b316d3fc463b83c8973073cff640ca7204ae
LSN
A zoomable version can be found here.
This is a picture of a "dense" Julia set. More information can be found here.
Fed 2 / Industar 26M 52mm 2.8 lens / expired (unknown date) Kodak BW400CN film
1/500 @ f/11
The light flares in the centre appear on a few of the photo's taken with the Industar lens, internal reflections? Hrrmph.
Ro m theta sigma : 5 -0.04 100 1 \ T N Xo : 98 50 100 nboot: 800 3977d128df7641a0ef757622746645f8cc50ec97
Handheld Motorola Droid 3, GingerBread
In-phone, 6 shot panorama stitch
Colour corrected off phone
The Ittiam Panorama algorithm for Mobile and Cellphone cameras, Smartphones and Tablets performs multi-shot combinations up to a 360 degree view. It uses intelligent image registration, intensity /white balance correction, optimal seam selection and blending methods to obtain high quality panorama images. The Panorama algorithm is part of Ittiam's Imaging SDK. The photograph was taken using an Android camera application based on Ittiam's Imaging SDK. All processing for this photograph was done in phone, unless explicitly noted.
For further information, please see Ittiam's Panorama Algorithm Web Page
āFacebook Algorithmic Factoryā sheds light on invisible processes that happen inside of the Worldās largest social network. Inside of this black box, non-transparent algorithms are deciding what kind of content will become part of our reality, what will be censored or deleted, which ideas will spread and which news will gain most visibility. They also define new forms of labour and exploitation.
Credit: Vladan Joler
Muse and a phalanx of electric trombonists perform "Algorithm" to open their show at Madison Square Garden.
This is a comparison of three resizing algorithms.
Link to full size: www.flickr.com/photos/kinematic/13783164545/sizes/o/
The first is the common method of Bicubic resizing (200%) with unsharp mask of 3 pixels radius applied.
The second option is my own custom workflow of 4 algorithms combined with super resolution (which I call resolution +) and no sharpening.
The third is one used by programs like Perfect Resize and many other popular resizing tools, Lanczos resizing algorithm with RL Deconvolution sharpening.
The Lanczos is definitely an improvement over the Bicubic method, giving a much crisper cleaner resize. However RL Deconvolution does tend to over-sharpen things a touch. I might even say that it artifically sharpens things that shouldn't be sharpened (note the little white sharpened specks on the rock).
My hybrid method is still better suited reducing essentially diffraction issues and recovering details. Especially viewed at 100%, it appears not just as a resizing of the image by 200% but an actual increase in resolution without the artifacts that seen in the other two methods. Although it is a little labour intensive, with RAWTherapee workflow the hybrid method definitely yields favourable results.
It is not something that one might want to do on every image, however the effort is worth it for those times that you either are resizing images for large reproductions or you're cropping heavily and need to recover some details.
Experiments like this certainly disuade me from ever needing to pick up an A7r for more resolution in studio situations (which most of my clients these days rarely ever call for or need).
I'm very close to publishing my workflow and description on how this is done. The cost of software is reasonable and the technical aspects behind it have been far simplified with the introduction of RAWTherapee into the workflow.
Drawing upon the idea of the dragon curve, I wondered what other shapes could be created using similar methods. As it turns out, this form of construction is known as an L-system; they create fractal patterns by replacing a segment with a smaller version of the initial pattern molecule. The Koch curve is another example of this. I made pleats in strips of paper to create a physical analogue of this process, which enforces another parameter: because the paper changes direction when folded, the molecule affects the form differently depending on which face of the segment is up during precreasing.
A proof for the non-intersection of any pattern made in this fashion:
These patterns are produced by replacing a segment with an n-sided molecule. Imagine that each of these original segments is the diagonal of a square; these squares don't overlap because we're using 90 degree symmetry on uniform line segments.
So as long as the replacement molecule stays within the square defined by the original line segment, and doesn't intersect itself, then the pattern can never intersect.
Biological idealization of maze problem with two dimensional five element ecosphere.
One food source (cheese) in yellow, another in green, a third in purple. We also have a 'predator' domain in red and a 'disease' domain in black.
Given a common point of emergence for a protocreature, we could expect co-adaptation to occur in this model and the formation of various 'species' as the original form found various ways of making a living and split 'solutions' develop (by running a number of algorithms in near parallel).
A more sophisticated form would be to allow food forms, predators and diseases to emerge from the SAME POINT and let the whole co-adapt (by setting up a chemical -proto organic base system with cycling 'weather' and the odd catatstrophe etc).
Given a sufficiently complex model, we would be modelling planetary life. See the next image for evolutionary star diagram (polygram) of known life forms.
A screen capture from a generative animation in my first mobile game: DRIFT, the puzzle that doesn't stand still.
See more at rndsd.com/drift/
31 May 2016 - OECD Forum 2016: Lunch Debate: The Algorithmic Society. OECD, Paris, France.
Moderator: Gareth Mitchell, Presenter, BBC Click
Speakers
- Pedro Domingos, Professor of Computer Science, University of Washington, United States
- Anindya Ghose, Professor of IT & Marketing; Co-Director, Center for Business Analytics, Leonard N. Stern School
of Business, New York University, United States
- Madhumita Murgia, Head of Technology, The Telegraph, United Kingdom
- Christian Reimsbach-Kounatze, Economist & Policy Analyst, Science, Technology & Innovation, OECD
Photo: OECD/Michael Dean
Asian College of Journalism and British Council hosted screening of award winning documentary Algorithms Saturday 22 February 2014 at the ACJ Lecture Hall in Chennai. British Deputy High Commissioner Chennai, Bharat Joshi was the chief guest. Directed by British filmmaker Ian McDonald and produced by Geetha J. the documentary has been screened at over twelve international film festivals and won four awards, including Ram Bahadur Tamang Trophy for Best Film at Film South Asia Kathmandu, Best Film on Intangible Cultural Heritage at the Jean Rouch International Film Festival 2013 in Paris, the Dogwoof Audience Film Prize at the biennial RAI International Festival of Ethnographic Films in Edinburgh and a Special Mention at Durban International Film Festival. Follow us on twitter @UKinIndia.
The artworks are created with high-resolution (from 50 megapixel) with lots of details. If you are interested in any way to buy artworks or you just want some additional info, contact me: jc2046 [-at-] gmail.com
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