Re: Just trying to import an image

*To*: mathgroup at smc.vnet.net*Subject*: [mg44632] Re: Just trying to import an image*From*: Bob Harris <nitlion at mindspring.com>*Date*: Tue, 18 Nov 2003 06:42:06 -0500 (EST)*References*: <bonnfg$h8i$1@smc.vnet.net> <bopcu5$opr$1@smc.vnet.net> <200311121301.IAA12554@smc.vnet.net> <bovev3$l04$1@smc.vnet.net> <bp22po$20t$1@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

Howdy, Does anyone here have additional ideas on this? Since it appears there will be no way to get mathematica to load a .gif image on my system, what other options do I have to load in an image so I an try doing some image processing on it? I am capable of writing a simple C program to convert the image into some other format. For example, I could convert it to a one-byte per pixel gray level image, with no other information in the file. If I did that, how might I load it into mathematica. I'm asking here because wolfram customer service won't help me. I really would like to do image processing with this package. Please help me if you can. Bob H > From: Bob Harris <nitlion at mindspring.com> To: mathgroup at smc.vnet.net > Organization: Steven M. Christensen and Associates, Inc and MathTensor, Inc. > Newsgroups: comp.soft-sys.math.mathematica > Date: Fri, 14 Nov 2003 08:12:40 +0000 (UTC) > Subject: [mg44632] Re: Just trying to import an image > > Yas wrote: >> Maybe put the path to the conversion executables to your path via >> >> AppendTo[$Path, >> "Path_To_Conversion_Executables_in_proper_syntax_for_your_platform"] > > Thanks for the idea. Have now tried that, but get the same error message. > Am patterning my path syntax after what is already in the $path variable. > Pretty sure I specified the right path, but in case not, I moved the file > (gif.exe) to top level of disk and tried specifying that. Same result. > >> I am surprised that the conversion filters can't be found. > > Well, that makes two of us! Am wondering if there is a customer service > site I can post this issue for someone at wolfram. > > I suppose I can write a tiny app in C that will to convert my .gif image > into something else mathematica could read without a converter. Moot point > now though. The project was due today. I ended up doing it in another system > on > campus. One advantage I had hoped for, using mathematica, was that I have > it at home and thus can accomplish something even when the school labs are > closed from midnight to 8). Plus I'm more familiar with Mathematica than > another system, so once I got past the image load problem I was expecting to > make > faster progress. > > Thanks, in any case, > Bob H > >> From: Yasvir Tesiram <yat at omrf.ouhsc.edu> To: mathgroup at smc.vnet.net >> Date: Wed, 12 Nov 2003 12:43:33 -0600 >> To: mathgroup at smc.vnet.net >> Cc: Bob Harris <nitlion at mindspring.com> >> Subject: [mg44632] Re: Re: Just trying to import an image >> >> Maybe put the path to the conversion executables to your path via >> >> AppendTo[$Path, >> "Path_To_Conversion_Executables_in_proper_syntax_for_your_platform"] >> >> If this works, you can make the change permanent in Preferences. I am >> surprised that the conversion filters can't be found. >> >> Yas >> >> >> On Nov 12, 2003, at 7:01 AM, Bob Harris wrote: >> >>> Howdy, Steven, >>> >>> Thanks for the idea. But it seems that the problem is that Mathematica >>> can't find the converter. I've already figured out how to make it >>> find the >>> image. >>> >>> Bob H >>> >>>> From: "Steven Shippee" <slshippee at comcast.net> To: mathgroup at smc.vnet.net >>> To: mathgroup at smc.vnet.net >>>> Organization: Comcast Online >>>> Newsgroups: comp.soft-sys.math.mathematica >>>> Date: Tue, 11 Nov 2003 01:10:29 +0000 (UTC) >>>> Subject: [mg44632] Re: Just trying to import an image >>>> >>>> To make it easy to debug, try putting the file (the "image") in a root >>>> directory somewhere (of your "c" drive or your "d" drive), and also >>>> ensure >>>> it has no spaces in the file name, for example, use something like >>>> c:\practice.jpg or c:\practice.bmp. >>>> >>>> Then you could run the command >>>> >>>> myimage=Import["c:\practice.jpg"]; >>>> >>>> and manipulate myimage from there. >>>> >>>> Steven >>>> >>>> shippee at jcs.mil >>>> >>>> >>>> >>>> "Bob Harris" <nitlion at mindspring.com> wrote in message >>>> news:bonnfg$h8i$1 at smc.vnet.net... >>>>> Howdy, >>>>> >>>>> Have an assignment in an computer vision class I'm taking. Thought >>>>> I'd >>>> try >>>>> fiddling around with it in Mathematica. Have run into the second or >>>>> third >>>>> brick wall, just trying to bring an image into Mathematica. Am in >>>>> need of >>>>> help. >>>>> >>>>> For starters, I found Import[] in the big book and tried it: >>>>> Import ["vl100.gif"] >>>>> The file vl100.gif is in the same directory as the mathematica >>>>> notebook >>>> that >>>>> I launched. But that seems not to be one of the places mathematica >>>>> looks. >>>>> So I just got a file not found error. So be it. >>>>> >>>>> I figured there must be a way to convince mathematica to look for >>>>> the file >>>>> where e file is. After stumbling around for a while in the book and >>>>> in >>>> the >>>>> help browser, I finally found the SetDirectory command. So looking >>>>> at the >>>>> format of file paths in $Path, I did >>>>> SetDirectory["Kablooie:ClassesS:VisionS:Project4S"] >>>>> which is the path to the directory containing the file. >>>>> >>>>> So then I tried >>>>> Import ["vl100.gif"] >>>>> again, and I get >>>>> Experimental`RegisterConverter::noexe: Could not find the >>>>> executable GIF.exe in any of { <<65>>, <<74>>, <<83>>, GIF.exe}. >>>>> >>>>> Now, I'm running this using mathematica 4.0.1.0 for the Mac on a >>>>> PowerMac >>>> G3 >>>>> running OS 9.0.4. Yes, I know I haven't upgraded in a while, but it >>>>> sure >>>>> seems like what I'm trying to do is supposed to work on my >>>>> configuration. >>>>> >>>>> The error message suggests that it doesn't have the executable code >>>>> to >>>>> handle gif images. I tried .pgm format and got the same result. >>>>> Since >>>> both >>>>> are listed in the big book I figured it's pointless to try other >>>>> formats. >>>>> Those two should've worked. >>>>> >>>>> I did a search of my hard drive and I do find a gif.exe (and hdf.exe, >>>>> jpeg.exe, pnm.exe, and tiff.exe) in the folder >>>>> ... MathematicaS:SystemFiles:Converters:Binaries:PowerMac >>>>> So it seems like it's got 'em, and it's just not looking for them. >>>>> >>>>> Can anyone point me toward a way to get this working? >>>>> >>>>> Thanks for any help, >>>>> Bob H >>>>> >>>> >> >

**Follow-Ups**:**Re: Re: Just trying to import an image***From:*"L. Vergara" <lvergara@lauca.usach.cl>

**References**:**Re: Just trying to import an image***From:*Bob Harris <nitlion@mindspring.com>

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