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processing:video_capture

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processing:video_capture [2013/04/12 18:46] – mithatprocessing:video_capture [2013/08/03 04:44] – [Video capture examples] mithat
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 ====== Video capture examples ====== ====== Video capture examples ======
  
-Examples below have been adapted from the [[http://www.processing.org/reference/libraries/video/Capture.html|Processing 2.0 library reference]] and from examples at [[http://www.learningprocessing.com/|Learning Processing]].+The examples below are based on documentation and code from the [[http://www.processing.org/reference/libraries/video/Capture.html|Processing 2.0 library reference]] and at [[http://www.learningprocessing.com/|Learning Processing]].
  
 ===== List available capture devices ===== ===== List available capture devices =====
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 ===== Capture is a PImage ===== ===== Capture is a PImage =====
  
-Something the documentation on the ''Capture'' class doesn’t mention is that ''[[http://processing.org/reference/libraries/video/Capture.html|Capture]]'' is derived from ''[[http://processing.org/reference/PImage.html|PImage]]''. You need to dig into the ''Capture'' source code to figure that out:+Something the [[http://processing.org/reference/libraries/video/Capture.html|documentation]] on the ''Capture'' class doesn’t mention is that ''Capture'' is derived from ''[[http://processing.org/reference/PImage.html|PImage]]''. You need to dig into the ''Capture'' source code to figure that out:
  
 <code java>public class Capture extends PImage implements PConstants { ...</code> <code java>public class Capture extends PImage implements PConstants { ...</code>
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 </file> </file>
  
-This version walks through each pixel in the reduced image and renders the value of that pixel as NxN blocks. (N is called OUTPUT_SCALE in the code below.)+This version walks through each pixel in the reduced image and renders its value as an NxN block. (N is called OUTPUT_SCALE in the code below.)
  
 <file java capture_reduce_res-2.pde> <file java capture_reduce_res-2.pde>
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 </file> </file>
  
 +You can render grayscale instead of color above by replacing the line <code java>color c = img.pixels[col + row*img.width];</code> with <code java>float c = brightness(img.pixels[col + row*img.width]);</code>
processing/video_capture.txt · Last modified: 2013/08/23 04:10 by mithat
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