Problem 1368. Create an 8-color version of an image

Created by Matthew Eicholtz

Solve Later

{"relationships":[{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/document","targetMode":"","relationshipId":"rId1","target":"/matlab/document.xml"},{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/output","targetMode":"","relationshipId":"rId2","target":"/matlab/output.xml"}],"parts":[{"partUri":"/matlab/document.xml","relationship":[],"contentType":"application/vnd.mathworks.matlab.code.document+xml","content":"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<w:document xmlns:w=\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\"><w:body><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>This problem was inspired by a tweet I saw from @MATLAB regarding</w:t></w:r><w:r><w:t> </w:t></w:r><w:hyperlink w:docLocation=\"http://www.mathworks.com/matlabcentral/fileexchange/37816-the-warholer?s_eid=PSM_3808\"><w:r><w:t>The Warholer</w:t></w:r></w:hyperlink><w:r><w:t>.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>Given an MxNx3 array (A) representing an image and a threshold for each channel (r/g/b), generate a new array (B) whose elements are 255 if greater than the threshold for that channel or 0 otherwise. This means the new \"image\" will only have 8 colors.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>You may assume that the inputs are on the interval [0,255].</w:t></w:r></w:p></w:body></w:document>"},{"partUri":"/matlab/output.xml","contentType":"text/xml","content":"<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\" ?><embeddedOutputs><metaData><evaluationState>manual</evaluationState><layoutState>code</layoutState><outputStatus>ready</outputStatus></metaData><outputArray type=\"array\"/><regionArray type=\"array\"/></embeddedOutputs>"}]}

Solve

Solution Stats

75 Solutions
32 Solvers

Last Solution submitted on Nov 18, 2020

Last 200 Solutions

Problem Comments

Solution Comments

Solution 296662

1 Comment

1 Comment

J.R.! Menzinger on 5 Aug 2013

RESPECT!!!

I didn't knew the function "shiftdim"... I use always "permute" for this purpose. :-P

Very nice!!!

Problem Recent Solvers32

Problem Tags

color image processing indexing matrix manipulation

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Problem 1368. Create an 8-color version of an image

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers32

Suggested Problems

More from this Author44

Problem Tags

Community Treasure Hunt

Problem 1368. Create an 8-color version of an image

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers32

Suggested Problems

More from this Author44

Problem Tags

Community Treasure Hunt

Players