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i used brew to create a compiled library from phash i have imported the CImg.h file and everything compiles but it doesn't work.

i want to make a hash from an image but i always get the same output

NSBundle *bundle = [NSBundle mainBundle];
NSString *path = [bundle pathForImageResource:@"branch.png"];

const char *image = [path cStringUsingEncoding:NSASCIIStringEncoding];

ulong64 hash = 0;
int valid = ph_dct_imagehash(image,hash);

NSLog(@"%i",valid);
NSLog(@"%llu",hash);

With this output

 sh: convert: command not found
 sh: gm: command not found
 sh: convert: command not found
 sh: gm: command not found
 sh: convert: command not found
 sh: gm: command not found
 2011-10-03 20:10:22.571 pHashi386[2155:60b] -1
 2011-10-03 20:10:22.572 pHashi386[2155:60b] 0

cleary something goes wrong but i don't have a clue what the sh commands not found are and neither if i'm on the right track.

Andy Jacobs
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  • Do you know what script it wants to run? The convert could be the one from ImageMagick. – ott-- Oct 03 '11 at 19:57
  • yeah its the one from ImageMagick and GM is graphicsmagick and i both installed them with brew. if i do "sh" and terminal and then typ convert it works.. but if i compile my project in xcode it keeps nagging about the command not found .. the convert and gm commands are used by CImg.h – Andy Jacobs Oct 04 '11 at 07:02

2 Answers2

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It seems i had to add a enviroment variable PATH

i used /usr/local/bin:/usr/local/sbin:/usr/bin:/opt/local/bin:/usr/local/mysql/bin:/opt/local/sbin:/bin:/usr/sbin:/sbin:/usr/X11/bin

as my value

i'm not quite sure if it would work on the iOS platform though.

Andy Jacobs
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  • You could bundle it with your app, see the iOS downloads at http://www.imagemagick.org/download/iOS/ – ott-- Oct 04 '11 at 09:19
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You also can tell CImg where to find ImageMagic convert, example:

cimg::imagemagick_path("/opt/local/bin/convert");

Bruno
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