Re: image opacity/image overlaying?

*To*: mathgroup at smc.vnet.net*Subject*: [mg80165] Re: image opacity/image overlaying?*From*: "Mariusz Jankowski" <mjankowski at usm.maine.edu>*Date*: Tue, 14 Aug 2007 06:58:42 -0400 (EDT)*Organization*: University of Southern Maine*References*: <f9p5ut$rm2$1@smc.vnet.net>

This doesn't use ArrayPlot, but works for 2D image arrays. Given two images, for example, img1 = Import[ "http://www.ee.usm.maine.edu/courses/ele489/data/cameraman.tif"; ] ; img2 = Import[ "http://www.ee.usm.maine.edu/courses/ele489/data/face.tif"; ] ; then this gives the desired result Show[{img1, Graphics[{Opacity[0.5], img2[[1]]}] }] Bye, Mariusz >>> On 8/13/2007 at 4:49 AM, in message <f9p5ut$rm2$1 at smc.vnet.net>, AV<akvelu at gmail.com> wrote: > Is there a way of overlaying a partially transparent 2D image array on > another 2D image array using ArrayPlot or ListDensityPlot? I am > currently using a workaround by making an array of transparent points > and showing this on top of a ListDensityPlot graphics but I wanted to > check if there was a better way since this is very slow. > > AV

**Follow-Ups**:**Re: image opacity/image overlaying?***From:*AV <akvelu@gmail.com>

**Re: Re: image opacity/image overlaying?***From:*Murray Eisenberg <murray@math.umass.edu>