Resizing Graphics
- To: mathgroup at smc.vnet.net
- Subject: [mg36302] Resizing Graphics
- From: au198295 at hotmail.com (Aaron)
- Date: Fri, 30 Aug 2002 01:19:30 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
I was wondering if there is a method for resizing Raster graphics (resizing the actual matrix of pixels, not just the display size). I am processing a large number of JPEG images, and we sometimes need to reduce the image size to allow data processing algorithms to function without running out of memory. In the past we simply used a program such as Photoshop to resize them before importing them into Mathematica. Due to the number of images we are processing now this is very inconvenient and it would be very useful if there was a method for accomplishing it in Mathematica, but I can't find one. I also thought about doing something simple like sampling every few pixels or averaging, but I thought there might be a method with more efficacy than this. I also tried exporting the graphics with the Export command as new JPEGs and manipulating the ImageResolution and ImageSize options but this seemed to have no effect. Any help would be much appreciated. Thanks, Aaron Urbas