Re: [julia-users] Example of imread from an imagemagick stream
I’m now using open instead of readandwrite… Yakir Gagnon The Queensland Brain Institute (Building #79) The University of Queensland Brisbane QLD 4072 Australia cell +61 (0)424 393 332 work +61 (0)733 654 089 On Fri, May 15, 2015 at 10:27 AM, Yakir Gagnon 12.ya...@gmail.com wrote: Thanks! OK, I finally found the commit you were talking about (commit 7ba0d6093c093acfc5c1d71fa3cad1ff33bccdfc). I managed to find an example for the stuff I wanted: cmd = `convert $filename -depth $bitdepth $colorspace:-` stream, _ = readsfrom(cmd) nchannels = length(colorspace) data = read(stream, T, nchannels, sz...) But I couldn't find this mysterious readsfrom. I suspect it's something to do with OSX (I'm on linux). I blindly switched it with readandwrite on a complete whim. And it works!!! I'll be happy to know if this is sub-optimal. On Friday, May 15, 2015 at 12:08:01 AM UTC+10, Tim Holy wrote: If you dig through the commit history of Images.jl, at some point you'll find the commit that switched from using Cmd to the C api for interacting with ImageMagick. That should have quite a few examples. --Tim On Thursday, May 14, 2015 05:25:19 AM Yakir Gagnon wrote: Can someone please post a simple example of reading an image stream from imagemagick? So something like this (though this doesn't work): cmd = `convert img.png do some imagemagick things that I wish I could do with Images.jl but are only possible with imagemagick -compress none ppm:-` I = imread(readall(cmd),Images.PPMBinary) I'm trying to avoid writing the image imagemagick created to disk and read it straight into julia. The readall(cmd) part works awesome, it spews all the image bits to the stdout. But I can't get imread to pick it up as an image. Thanks in advance!
Re: [julia-users] Example of imread from an imagemagick stream
If you dig through the commit history of Images.jl, at some point you'll find the commit that switched from using Cmd to the C api for interacting with ImageMagick. That should have quite a few examples. --Tim On Thursday, May 14, 2015 05:25:19 AM Yakir Gagnon wrote: Can someone please post a simple example of reading an image stream from imagemagick? So something like this (though this doesn't work): cmd = `convert img.png do some imagemagick things that I wish I could do with Images.jl but are only possible with imagemagick -compress none ppm:-` I = imread(readall(cmd),Images.PPMBinary) I'm trying to avoid writing the image imagemagick created to disk and read it straight into julia. The readall(cmd) part works awesome, it spews all the image bits to the stdout. But I can't get imread to pick it up as an image. Thanks in advance!
Re: [julia-users] Example of imread from an imagemagick stream
Thanks! OK, I finally found the commit you were talking about (commit 7ba0d6093c093acfc5c1d71fa3cad1ff33bccdfc). I managed to find an example for the stuff I wanted: cmd = `convert $filename -depth $bitdepth $colorspace:-` stream, _ = readsfrom(cmd) nchannels = length(colorspace) data = read(stream, T, nchannels, sz...) But I couldn't find this mysterious readsfrom. I suspect it's something to do with OSX (I'm on linux). I blindly switched it with readandwrite on a complete whim. And it works!!! I'll be happy to know if this is sub-optimal. On Friday, May 15, 2015 at 12:08:01 AM UTC+10, Tim Holy wrote: If you dig through the commit history of Images.jl, at some point you'll find the commit that switched from using Cmd to the C api for interacting with ImageMagick. That should have quite a few examples. --Tim On Thursday, May 14, 2015 05:25:19 AM Yakir Gagnon wrote: Can someone please post a simple example of reading an image stream from imagemagick? So something like this (though this doesn't work): cmd = `convert img.png do some imagemagick things that I wish I could do with Images.jl but are only possible with imagemagick -compress none ppm:-` I = imread(readall(cmd),Images.PPMBinary) I'm trying to avoid writing the image imagemagick created to disk and read it straight into julia. The readall(cmd) part works awesome, it spews all the image bits to the stdout. But I can't get imread to pick it up as an image. Thanks in advance!
