Re: Beginner : how to convert .bmp or .jpeg for digital processing
- To: mathgroup at smc.vnet.net
- Subject: [mg57152] Re: Beginner : how to convert .bmp or .jpeg for digital processing
- From: David Bailey <dave at Remove_Thisdbailey.co.uk>
- Date: Thu, 19 May 2005 03:08:24 -0400 (EDT)
- References: <d6bv7e$pck$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
vandaalen at chello.nl wrote: > e.g. : > > 1. digitized emphasizing and contrast enhancing ( increasing and/or decreasing ) the wanted X-ray shadows and discerning and filtering out from the unwanted low energy scattering and other unwanted backgrounds, > 2. false colorizing regions of interest, > 3. sharpening by emphasizing edge contrast, > 4. and more simple processing. > > For this purpose I need to get numerical arrays ( which I know how to handle ) which should be converted out of the imported digitized grayscale/jpeg/bmp files ( X-ray pics ). > > Thanks for any help. > Peter. > > >>van: Chris Chiasson <chris.chiasson at gmail.com> >>datum: 2005/05/17 di AM 04:46:53 MEST >>aan: Peter van Daalen <vandaalen at chello.nl> >>cc: mathgroup at smc.vnet.net >>onderwerp: Re: Beginner : how to convert .bmp or .jpeg for digital processing >> >>What do you mean by "improving"? >> >>On 5/16/05, Peter van Daalen <vandaalen at chello.nl> wrote: >> >>>I want a simple way of processing grayscale and .bmp and .jpeg bytes ( >>>for improving my digitized X-ray pics ). >>>No advanced processing as per application " Digital Image Processing " >>>is needed for me. >>> >>>Being a Mathematica beginner, I failed in finding the way to convert >>>..jpeg and .bmp formats into 2D and 3D numerical ( 0-255) arrays. >>> >>>Thanks for any help. >>> >>> >> >> >>-- >>Chris Chiasson >>http://chrischiasson.com/ >>1 (810) 265-3161 >> > > Try Inport["file.jpg"][[1,1]] This will extract a 3-dimensional array of integers. The innermost dimension spans the three primary colours. David Bailey http://www.dbaileyconsultancy.co.uk