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< > BotCompany Repo | #503 // Convert image to 1 bit (threshold 50%)

Lua code - Image transformer

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get("#372") -- getContrast

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brightnessThreshold = 0.5



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-- convert pixel by pixel



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w, h = img.width, img.height



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pixels = {}



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for y = 0, h-1 do



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  for x = 0, w-1 do



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    b = bright(rgb(img.getInt(x, y)))



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    pixels[y*w+x+1] = b >= brightnessThreshold and -1 or 0



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  end



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end




        
Author comment

    
Began life as a copy of #373

    
test run  test run with input  download  show line numbers   
Travelled to 12 computer(s): aoiabmzegqzx, bhatertpkbcr, cbybwowwnfue, gwrvuhgaqvyk, ishqpsrjomds, lpdgvwnxivlt, mqqgnosmbjvj, pyentgdyhuwx, pzhvpgtvlbxg, tslmcundralx, tvejysmllsmz, vouqrxazstgt

  
Comments [hide]

	

	ID
	Author/Program
	Comment
	Date
 	

    
487 #1000610 Edit suggestion:
!636
!629

main {
  static Object androidContext;
  static String programID;

  public static void main(String[] args) throws Exception {
get("#372") -- getContrast



brightnessThreshold = 0.5



-- convert pixel by pixel



w, h = img.width, img.height

pixels = {}

for y = 0, h-1 do

  for x = 0, w-1 do

    b = bright(rgb(img.getInt(x, y)))

    pixels[y*w+x+1] = b >= brightnessThreshold and -1 or 0

  end

end


}}		 2015-08-18 17:45:47  delete  


485 #1000604 (pitcher)  2015-08-18 00:07:22 

 
 
add comment
      
      
  

  

    Snippet ID:
    #503
  

  

    Snippet name:
    Convert image to 1 bit (threshold 50%)
  

    

    Eternal ID of this version:
    #503/1
  

  

    Text MD5:
    bd96867e92727d23bc2e521f226164c1
  

    

    Author:
    stefan
  

  

    Category:
    image transformers
  

  

    Type:
    Lua code - Image transformer
  

        

    Public (visible to everyone):
    Yes
  

  

    Archived (hidden from active list):
    No
  

  

    Created/modified:
      2015-03-09 18:12:48
  

  

    Source code size:
    282 bytes / 14 lines
  

  

    Pitched / IR pitched:
    No / Yes
  

    

    Views / Downloads:
    1094 / 182
  

      

    Referenced in:
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