Re: importing image and getting numbers from the gray intensity
- To: mathgroup at smc.vnet.net
- Subject: [mg49356] Re: importing image and getting numbers from the gray intensity
- From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
- Date: Fri, 16 Jul 2004 06:06:37 -0400 (EDT)
- Organization: Universitaet Leipzig
- References: <cd5okp$b2c$1@smc.vnet.net>
- Reply-to: kuska at informatik.uni-leipzig.de
- Sender: owner-wri-mathgroup at wolfram.com
Hi, invert the image and let run a thining algorithm over the bitmap. Label the unconnected components and get the positions for every label form the bitmap and you are done. Regards Jens sean kim wrote: > > let's say you have an image of gray bands of varying intensity. > > such as the one seen on the website, > > http://encyclopedia.thefreedictionary.com/SDS-PAGE > > Is there anyway to change the picture or do something and be able to > get numerical values for those bands? > > maybe define a vertical line and then go to the center of the each > bands and measure how intense the gray is. > > or maybe define a rectangle and get the gray intensity in that... > > is there a packages or codes for doing that? NIH image program which > is freely avaialble can do this. But I wanted to do it in Mathematica. > > Thanks for any and all insights. > > sean