How to create image from string

Ye' old general discussion board. Basically, for everything that isn't covered elsewhere. Come here to shoot the breeze, shoot your mouth off, or whatever suits your fancy.
This forum is not for asking programming related questions.

Moderator: General Moderators

Post Reply
girish_a
Forum Newbie
Posts: 3
Joined: Wed Sep 15, 2010 1:12 pm

How to create image from string

Post by girish_a »

Hi All,
I have received a string which represents an image as following

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

I have opened this in Textpad and it looks like each character is represented in ASCII. My Question is How can I convert this string into an image file ( at this stage I don't care if it is any format as long it works ). I have tried the function createimagefromstring but that didn't work and said Data format Error ,etc.

Please advise.

Regards,
Girish
User avatar
Jonah Bron
DevNet Master
Posts: 2764
Joined: Thu Mar 15, 2007 6:28 pm
Location: Redding, California

Re: How to create image from string

Post by Jonah Bron »

Do you have any more information about the string? It looks like a hexadecimal number. What format was the picture in?
girish_a
Forum Newbie
Posts: 3
Joined: Wed Sep 15, 2010 1:12 pm

Re: How to create image from string

Post by girish_a »

Hi Jonah,
This string is a product of a fingerprint scan. The Manual says it is ASCII Hex string.

Regards,
Girish
alex.barylski
DevNet Evangelist
Posts: 6267
Joined: Tue Dec 21, 2004 5:00 pm
Location: Winnipeg

Re: How to create image from string

Post by alex.barylski »

That may not equate to an actual visual image, much like an ISO is an image, but not a viewable image like PNG. Why do you want to view this image?

My guess it's a unique hexadecimal output generated only by a specific finger print, you store it much like you would a SHA256 hashed password. Although I am not sure there is any purpose in rehashing the value.

Cheers,
Alex
girish_a
Forum Newbie
Posts: 3
Joined: Wed Sep 15, 2010 1:12 pm

Re: How to create image from string

Post by girish_a »

I need to show this on a webpage that is the reason I need to create an image out of this string.

Thanks,
Girish
alex.barylski
DevNet Evangelist
Posts: 6267
Joined: Tue Dec 21, 2004 5:00 pm
Location: Winnipeg

Re: How to create image from string

Post by alex.barylski »

Your string was lot longer than I thought it was but still only about 4K that would be a pretty small image, not really relevant to the naked eye. What do the finger print scanner say? That it's a snapshot/representation of a scanned finger print? Or a calculated/hashed image of a finger print?

Cheers,
Alex
kalpesh.mahida
Forum Commoner
Posts: 36
Joined: Wed Oct 06, 2010 7:09 am

Re: How to create image from string

Post by kalpesh.mahida »

I think php manual on GD library can help you out to solve your problem.
here is the link http://php.net/manual/en/book.image.php
the GD library also has function called imagecreatefromstring i guess this is what you are looking for.
more detail on the function can be found at http://www.php.net/manual/en/function.i ... string.php
you can digg into the topic regarding image and manipulations at http://www.php.net/manual/en/book.imagick.php as well

Hope this will help you.

Kalpesh Mahida
Post Reply