Simpsons contributor

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Mandelbrot_sequence_new.gif sourcecode

hi, I'm not sure but you are the author of http://en.wikipedia.org/wiki/File:Mandelbrot_sequence_new.gif ? If yes, is the sourcecode you used available somewhere? the link that is given there (http://www.nitorijournal.org/?p=1066) seems broken. If not, would you know who would have the sourcecode? — Preceding unsigned comment added by Patteone (talk • contribs) 10:18, 28 September 2011 (UTC)

edge detection in the retina

Hi. Would you be able to share your retina receptive field on/off cell code with me? I thought it was a very good implementation, would like to play around with it. Thanks. Visualspatialmemory (talk) 09:47, 16 July 2018 (UTC)

Hey.I was wondering if i could check out your code for the center-surround image. Im trying to create a similar thing in python as a realtime implementation. Thanks --Tomesparon (talk) 20:51, 20 August 2017 (UTC)

Hi. I'm interested in checking out your code for the center-surround image - would you let me see it? I'm attempting to build a 'biologically inspired' edge detector algorithm. Its this one: http://en.wikipedia.org/wiki/File:Red_on_centre_green_off_centre_.png And thanks very much for putting up those nice images.

MRA (talk) 20:36, 24 February 2015 (UTC)

Hello!

http://en.wikipedia.org/wiki/File:Red_on_centre_green_off_centre_.png

I currently work in the visual sciences focusing on the neuro-circuitry in the retina and I am very intrigued by your work :) I am actually trying to implement the same thing but in C I was just wondering if it might be possible to see the code that you used to generate the edge detection images as a 'guide'. I greatly appreciate it and I will like to thank you in advance :)

Blueoranges (talk) 17:11, 19 November 2011 (UTC)

Addenum: Thank you so much for your help! I really appreciate it. If it won't be too much trouble for you, can you send your version as well? Thank you again! :) I hope you have a great day :D

Blueoranges (talk) 07:19, 20 November 2011 (UTC)

File:Dailymillerjpegbirthday.JPG listed for deletion

A file that you uploaded or altered, File:Dailymillerjpegbirthday.JPG, has been listed at Wikipedia:Files for deletion. Please see the discussion to see why this is (you may have to search for the title of the image to find its entry), if you are interested in it not being deleted. Thank you. Cloudbound (talk) 20:13, 20 March 2012 (UTC)

Could you contact me as soon as possible about permission to include your images in a college textbook? Deborah Anderson Nickclay (talk) 17:33, 6 April 2012 (UTC)

Julia sets vertically squashed

Your blue Julia set images were all vertically squashed by a factor of ${\frac {3}{4}}$, distorting the nice hierarchies of circular symmetries into ellipses. I’ve fixed them by resizing them from 1024×768 to 768×768, but you may want to fix your code and reupload them at full quality. Anders Kaseorg (talk) 21:13, 13 June 2012 (UTC)

Canny edge detector

Hi, I would very much like to get a copy of your Canny edge detection code referred to under the images in the Canny edge detector article for examination for a project I am working on. This link you had posted previously in other replies seems to have expired. Is there any chance you still have it and could upload it again? Much thanks in advance. Sedgewix (talk) 11:46, 25 February 2013 (UTC)

The code is long lost now, but it shouldn't take too much effort to rewrite it. I'll do that in my spare time in the coming days. I'm not quite sure how long it will take. --Simpsons contributor (talk) 16:33, 24 February 2013 (UTC)

• There is another implementation here if you're interested: http://www.tomgibara.com/computer-vision/CannyEdgeDetector.java)

Thanks for the link! I have found that one among several others that I will note here for the sake of record keeping:

• Canny Edge Detection Tutorial - Bill Green (2002) (c) (code is missing but is present on archive.org: Canny Edge Detection Tutorial - note also that the third image on that page is not the result of that code, the second one is, third appears to be a reference.)
• Canny Tutorial - Noah Kuntz (2006) (c++) (another implementation based on Bill's tutorial)
• Canny edge detector (Canny filter) for image processing and computer vision - N. Petkov (2012) (matlab)
• Edge Detector Comparison - Heath, M. (1996) (c) (technically a Canny edge detector, but does not use a Sobel differential and sets aside the gradient direction information)
• Canny Edge Detector - Mikel Rodriguez (2005) (matlab)
• OpenCV Source (2013) (c++)
• Canny Edge Detector - Chien-I Liao (2004) (c++)
• Canny's Edge Detector: Implementation - Sohaib A. Khan (2002) (matlab)
• FAST-EDGE - Benjamin C. Haynor (2009) (c)
• Edge Detection Program - Nikhil Shirahatti (2003) (c)
• Canny Edge Detector Implementation - Tom Gibara (2011) (java)
• Java Technology Forums - canny algorithm for edge detection - Leandro Trevisan (2004) (java) (Tom Gibara's reference)
• Repa (REgular PArallel arrays) Demo - Ben Lippmeier (2012) (haskell) — Preceding unsigned comment added by Sedgewix (talk • contribs) 12:23, 25 February 2013 (UTC)

But the results that you have posted in the Canny edge detector article are far superior to the results of any of these. The only one that really compares is N. Petkov's implementation, but it uses a lot of matlab's functions and I am looking for something I can replicate in c.

I feel kind of bad to ask you to re-write yours, that seems like free work you had not planned on, but I honestly feel that if your code can produce the posted results, then the world is at a loss for the lack of your code. Are you sure you don't still have it somewhere? Or perhaps one of the other people you sent it to still do? It was only two years ago... (Maja_bury, ToMMiTTo)

So hopefully your old code is still out there somewhere, but if not, only re-write it if you want to, as all I can offer is my gratitude and appreciation. Seriously, based on the posted images your implementation was "head and shoulders" above everyone else. Sedgewix (talk) 11:46, 25 February 2013 (UTC)

File:Copy PSII new design.JPG listed for deletion

A file that you uploaded or altered, File:Copy PSII new design.JPG, has been listed at Wikipedia:Files for deletion. Please see the discussion to see why this is (you may have to search for the title of the image to find its entry), if you are interested in it not being deleted. Thank you. Kelly ^hi! 04:14, 8 March 2013 (UTC)

File:Julia -0.835 -0.2321.png missing description details

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File:Chart animation.gif listed for deletion

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GIF frame delays

Please see comments I left for you at your Commons User talk page. — Quicksilver^{T @} 23:17, 12 September 2014 (UTC)

Source code for Julia_-0.8_0.156.png

Do you still have the source code for Julia_-0.8_0.156.png -- in particular the number of iterations and the colour mapping? Thanks! — Preceding unsigned comment added by Aeyaisoo (talk • contribs) 15:09, 21 June 2015 (UTC)

File:Genetic blue.gif listed for discussion

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File:Seasideme.PNG listed for discussion

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POTD notification

POTD

Hi SC,

Just to let you know, the Featured Picture File:Mandelbrot sequence new.gif is scheduled to be Picture of the Day on June 15, 2017. If you get a chance, you can check and improve the caption at Template:POTD/2017-06-15. Thank you for all of your contributions! — Chris Woodrich (talk) 01:34, 3 June 2017 (UTC)

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