title: Android ZXing image processing
body: <p>I have to scan a Data Matrix written on something like <a href="http://www.google.ro/imgres?imgurl=http://www.okokchina.com/Files/uppic18/Hologram%2520sticker%2520for%2520security_Hologram%2520film405.jpg&amp;imgrefurl=http://www.okokchina.com/product/Office-Supply/Paper-Packaging/Coated-Paper/index_3.htm&amp;usg=__yGNA5UbshM_TiQYL6-fLapPA1go=&amp;h=1704&amp;w=2272&amp;sz=1696&amp;hl=ro&amp;start=160&amp;zoom=1&amp;tbnid=GTmenTLC2ituTM%3a&amp;tbnh=151&amp;tbnw=201&amp;ei=E-YaTvaONs-08QOllq0v&amp;prev=/search?q=hologram&amp;um=1&amp;hl=ro&amp;sa=N&amp;biw=1280&amp;bih=850&amp;tbm=isch&amp;um=1&amp;itbs=1&amp;iact=rc&amp;dur=278&amp;page=9&amp;ndsp=20&amp;ved=1t:429,r:11,s:160&amp;tx=106&amp;ty=50&amp;biw=1280&amp;bih=850" rel="nofollow">this</a>. <br/><br/>
  The code is white/light gray but the background reflects different colors, depending on the position of the camera(angle), light.
  Where would be the right place to edit the image captured in Android Zxing?<br/><br/>
  Is there any possible adjustment to make the image black on white before processing?</p>
  
  <p>Any idea would be great.</p>