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Michael Bach
Works at Ophthalmology Dept, Medical School, Freiburg University, Germany
Attended Humboldt-Gymnasium
Lives in Gundelfingen/ Freiburg/Germany
351 followers|287,094 views
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Michael Bach

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If this campaign reaches its goal, it will only delay… But at least that.
Let's just get Greece sorted. All this dithering over Greece is getting boring. European ministers flexing their muscles and posturing over whether they can help the Greek people of not. Why don't we the people just sort it instead? The European Union is home to 503 million people, ...
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Michael Bach

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A great ISCEV Symposium in Lubljana, Slovenia

This year's #ISCEV  http://iscev.org 
symposium was perticularly nice, methinks. Many excellent scientific contributions, especially from our host country (no cargo cult science there!), smooth proceedings, everything just fine. One major complaint: too much good food!
There's a gallery of the dinner at the casltle available now:
http://iscev2015.org/index.php/component/content/article/8-root/20-dinner-at-ljubljana-castle

The “Olympics" at the end at lake Bled were also particularly well organised, quite funny with singing and boating. We should always have singing (even if “my” team doesn't win)!

Furthermore, Lubljana (the 2nd “l” is silent) is a beautiful city, with wonderful people. You feel safe, everything's clean, people smile, a good mood pervades all. Everyone speaks English, thanks to non-dubbed movies/TV.
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Michael Bach

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STOP TTIP
Ich bin hier schon mehrfach auf TTIP eingegangen. Hier ergibt sich die Gelegenheit, einen kleinen Beitrag dagegen(!) zu leisten:
https://stop-ttip.org/de/unterschreiben/?noredirect=de_DE

Or in English
https://stop-ttip.org/de/unterschreiben/?noredirect=en_GB

Malheureusement je ne sais sas parlez Français…
https://stop-ttip.org/fr/signer/?noredirect=fr_FR
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Ab sofort können Sie die selbstorganisierte Europäische Bürgerinitiative (EBI) gegen TTIP und CETA unterzeichnen. Hier das deutschsprachige Formular. Alternativ wählen Sie darunter Ihre Wunschsprache.   Falls Sie Fragen zur Kampagne oder Probleme mit der Onlineunterzeichnung haben, so schauen Sie bitte in unsere Fragen und Antworten zur Kampagne.   Andere Sprachen: български (Bulgarisch) Čeština (Tschechisch) Dansk …
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super! hgm
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Michael Bach

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TTIP already lowering health standards in EU!
The worst expectations coming to pass already!
Despite repeated promises that the US trade agreement would not lower EU standards.
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Michael Bach

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Pixel artifact – Be gone
The amazing #waifu2x  algorithm http://waifu2x.udp.jp/ can largely reduce pixel artifacts due to discretisation. It can also reduce the typical JPEG compression artifacts when the strong compression uses only the low coefficients with poor discretisation of the discrete cosine transform. What's more, this algorithm is #opensource  and can be obtained via  #github .
The quality improvement really amazes me. In the accompanying example I started with a very low quality image (left) on purpose, on the right is the waifu2x result.
What this means to me in practice is that I will have much less work manually cleaning up poor quality example images for my presentations.
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Colour Sampling of “The Dress” – with full  #R   code

While the hype of #thedress  is deservedly over, my paper on this will appear soon in “Der Ophthalmologe”, prompting me to a renewed attempt at colour sampling of its #colors . Outcome is the attached figure. You can see more here
http://michaelbach.de/ot/col-dress/
and the full stand-alone R  code to produce this figure here
http://michaelbach.de/ot/col-dress/colorSampling.R

Initially I had programmed the colour space conversions with my own RGB→XYZ matrix in a loop. Finding, finally, by chance the built-in "convertColor" function and converting everything to vector operation speeded up the processing by about a factor of 100.

Looking forward to corrections to my R code!

Best, Michael.
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Michael Bach

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Lake Bohinj – Bohinjska Jezero

After the #ISCEV symposium  in Ljubljana we decided to stay for a few days in beautiful Slovenina, and had resevered at Lake Bohinj.  A pearl in the Slovenian Alps. 20 km east of lake Bled, this lake is larger, more beautiful IMO, and much less touristy than lake Bled. Beautiful for water activities, hiking, climbing, and winter sports.
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Michael Bach

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What a tangled web we weave – display resolutions

I have this beautiful demo :) where you can sample the #dress   colour under your cursor:  http://michaelbach.de/ot/col-dress/
And a bug haunted me on this – sometimes the colours where drawn from totally wrong positions. Today I solved the puzzle: it depends on device resolution, specifically “retina displays” versus “non-retina…”. On nearly all platforms we have now display resolutions which are more than 5 times higher than the traditional 72 dpi. This is dealt with largely successfully by modern browsers. In my case, on high-resolution devices the coordinates of the mouse cursor have to be multiplied with “Window.devicePixelRatio” (https://developer.mozilla.org/en-US/docs/Web/API/Window/devicePixelRatio)
to correctly index into the image to extract its colour values. Ok, one problem solved – life has more for me.
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FrACT Update 3.9.3
Fixed a rare bug that could occur with Letter #acuity  and QWERTZ keyboards.
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Genau: Wissenschaftler, Augenärzte, Optometristen, Optiker. Danke! hgm
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50 Years of the McCollough Colour Aftereffect
This exceptional #illusion  was described 50 years ago by Celeste McCollough and it is still (1) an outstanding aftereffect that can last for months (!) and (2) not understood.
To celebrate these 50 years, I have now added it to my collection of visual phenomena and optical illusions http://michaelbach.de/ot/col-McCollough/
To help you make it through the boring minutes (!) of adaptation, I have added an interesting (?) fixation task.
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Apple MacOS Photos: How to edit or change location metadata (EXIF data)
Unfortunately, the new Photos application on MacOS does not support manipulating the location data when the GPS info is wrong or missing.

After a little recherche, I came up with Exiftool
http://www.sno.phy.queensu.ca/~phil/exiftool/
Very nice, needs to be accessed via the terminal / command line. And wow, does it have a multitude of options! Took me a while to peruse the manual to come up with:
exiftool -n -GPSLongitude='7.85' /Users/bach/Desktop/IMG_6728.JPG
and
exiftool -n -GPSLatitude='48.0' /Users/bach/Desktop/IMG_6728.JPG
The "-n" argument means that the location is given as decimal fraction rather than minutes etc.

I hope this helps whoever wants to tackle similar problems.
Michael
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Michael Bach

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One way to make your voice against TTIP heard (a little)

I already commented on this a while ago
https://plus.google.com/+MichaelBachVision/posts/c9FfeThd4H8
now you can add your signature too!
TTIP and CETA are a threat to democracy, the environment, consumers and labour standards. But we can stop them! Sign the European Citizens' Initiative now!
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Have him in circles
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Work
Occupation
Scientist
Employment
  • Ophthalmology Dept, Medical School, Freiburg University, Germany
    Section Head, present
Places
Map of the places this user has livedMap of the places this user has livedMap of the places this user has lived
Currently
Gundelfingen/ Freiburg/Germany
Previously
Dortmund - Schondorf - Lübeck - Berlin
Contact Information
Home
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Work
Email
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Tagline
Personal interests: Life. Professional interests: All things vision.
Introduction
Fotos on top, left to right: our natural swimming pond, music, whitewater 2010 in Morgantown, 2011 in Chongqing, wakeboarding.
Education
  • Humboldt-Gymnasium
    1960 - 1970
  • Landheim Schondorf/Ammersee
    1966 - 1968
  • Ruhr University
    Physics, 1970 - 1972
  • Albert Ludwigs University of Freiburg
    Physics, Psychology, Computer Science, 1972 - 1977
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Male
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Married
Michael Bach's +1's are the things they like, agree with, or want to recommend.
Wirkungslose Mittel in der Apotheke: Zurück zum "Scheiß des Monats" - SP...
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Ebola? Da gibt's doch was von... Esopharm
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Op-Ed: Microsoft layoff e-mail typifies inhuman corporate insensitivity
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Robotic letter is an unfortunately normal example of how companies talk to employees.

The new Mac Pro: Not for the faint of wallet
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When I first gazed upon the radically redesigned, supercharged Mac Pro at Apple’s WWDC last June, my reaction was immediate: “This is my nex

Resize windows like a pro in OS X
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Both built-in and third-party options are available for OS X to help manage window sizes. Read this article by Topher Kessler on CNET.

There's no need to apologise for the sorry state of Britain. But I'm sorry
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Even Americans have been forced to accept the value of our favourite self-effacing five-letter word

Google Summer of Code experiences
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Elektroautos erst nach Mitternacht aufladen
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Wasserskilift Freiburg - News
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Der Wasserski- und Wakeboardlift am Tunisee in Freiburg bietet eine 5-Mast Wasserskianlage und verspricht Vergnügen und Erlebnis pur!

Gesamtschau der Studien zur Homöopathie | Detritus
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Detritus - Gedanken, biologisch abgebaut - ein Blog von Martin Ballaschk

Ars Technica
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Serving the technologist for over 1.3141592 x 10^-1 centuries

Day4 - How we screwed (almost) the whole Apple community
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Computer Vision: The Fundamentals
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What is Computer Vision? Computer vision seeks to develop algorithms that replicate one of the most amazing capabilities of the human brain

Optical Illusions and Visual Phenomena
michaelbach.de

visual phenomena, optical illusion, visual illusion

From idea to science: Knowing when you've got a good idea
arstechnica.com

Turning scientific musings into raw science—in a way that makes everyone happy.

Magma Announces ExpressBox 3T - Thunderbolt to PCIe Expansion Chassis
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1-800.285.8990. Products. PCI Express Expansion. ExpressBox 1; ExpressBox 2; ExpressBox 4 (2U); ExpressBox 4 (1U) (x8); ExpressBox 4 (1U) (x

hyphenator
code.google.com

Javascript that implements client-side hyphenation of HTML-Documents

Cappuccino & Objective-J - Google Groups
groups.google.com

Changing a CPCollectionView Item Prototype, Todd Freese, 8:39 AM. Missing CPProgressIndicator files? Todd Freese, 8:07 AM. The Node.js proje

How To Be a Genius: This Is Apple's Secret Employee Training Manual
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We recently showed you just how badly some of Apple's retail elite behave when no one's watching, but surely they were taught better, right?

Duplicate Content
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Duplicate Content bzw. Double Content bezeichnet Webseiten, die einen sehr ähnlichen Inhalt ausliefern. Hier finden Sie Probleme und deren L