creating anaglyphs
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Creating Anaglyphs Announcements REMINDER - In class exam on Monday, March 2 nd Closed book/closed notes Will cover the introduction and the unit on pictures (chapters 1-5) Will follow the same general format of the quizzes (may even include some of those questions a second time)

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announcements
Announcements
  • REMINDER - In class exam on Monday, March 2nd
    • Closed book/closed notes
    • Will cover the introduction and the unit on pictures (chapters 1-5)
    • Will follow the same general format of the quizzes (may even include some of those questions a second time)
    • Will not ask you to write any significant code
    • I will not be here (Dr. Fienup will proctor)
announcements3
Announcements
  • CHANGE - In lab exam is on Tuesday, March 10th
    • Closed book/closed notes
    • No access to the internet or your previous assignments
    • Will ask you to write two or three methods to manipulate picture(s)
    • I will be here
announcements4
Announcements
  • CHANGE - Tuesday, March 3rd is now a lab
    • Introduction to sound
    • Read chapter six prior to lab
    • I will not be here
    • Dossay will answer your questions in lab
announcements5
Announcements
  • PA04 is now posted
    • Use the graphics commands and pictures to create a comic strip
    • At least four frames (for which you draw lines to separate)
    • At least two characters
    • At least one character must be changed by you via code.
    • At least one piece of text
    • Due on Tuesday, March 10th (yes, the day of the in-lab exam)
that is an old fashioned stereograph
That is an old fashioned “stereograph”
  • Two images from slightly different perspectives
  • If you can get one eye to see one photo and the other eye to see the other photo then you can create a 3D effect
but how could we do this at home
But how could we do this “at home”
  • Answer:
    • Anaglyphs
    • Split one photo (normally the left eye) into its red channel
    • Split the other photo (normally the right eye) into its cyan channel
    • Merge
    • But you need those funny glasses (I have both red/cyan and yellow/blue glasses)
so what would the code look like
So what would the code look like?

def anaglyph(left,right):

output = makeEmptyPicture(getWidth(left),getHeight(left))

for x in range(1,getWidth(left)):

for y in range(1,getHeight(left)):

target = getPixel(output,x,y)

s1 = getPixel(left,x,y)

s2 = getPixel(right,x,y)

setRed(target,getRed(s1))

setGreen(target,getGreen(s2))

setBlue(target,getBlue(s2))

return output

slightly better code
Slightly “better” code

def anaglyph(left,right):

output = makeEmptyPicture(getWidth(left),getHeight(left))

for x in range(1,getWidth(left)):

for y in range(1,getHeight(left)):

target = getPixel(output,x,y)

s1 = getPixel(left,x,y)

s2 = getPixel(right,x,y)

setRed(target,(getRed(s1)+getGreen(s1)+getBlue(s1))/3)

setGreen(target,getGreen(s2))

setBlue(target,getBlue(s2))

return output

sources for images
Sources for images
  • Several Websites
    • http://www.studio3d.com/pages/anaglyph.html
    • http://www.studio3d.com/pages/stereophoto.html
    • http://hazyhills.com/mars3d/
  • Take them yourself
    • Take two photos with one slightly to the right of the other
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