How to create a thumbnail using ImageToBlob/BlobToImage ?

[lauchuen]

hi,

my idea is storing a picture into database, then before update trigger a procedure to create thumbnail itself.
is that possible to do this with PerlMagick ? thanks.

[lauchuen]

any idea how to store ImageToBlob in database?

since i've try its not work,

Code: Select all

$_TP{new}{thumbnail} = $image->ImageToBlob();

anyone can give me some hints ? or actually its won't work? thanks a lot.

[anthony]

From my understanding that should work fine, though you may need to set the 'Magick' of the image to select the right image file format other wise it will default to the meta-data saved format of the image read.

[lauchuen]

thanks you for your reply.

could you show me some sample code or any document/example about database ImageToBlod/BlobToImage ? because i'm really new in perlmagick, thanks a lot.

[anthony]

I have not used it much myself.

An example I believe is on the PerlMagick Web Page
http://imagemagick.org/script/perl-magick.php#blobs

before writing the blobs you should set all the images "magick" attribute to the format wanted.

[lauchuen]

thanks your reply, i read the example before, since there're lag of information about database usage.

yes, already define the image "magick" but still fail. please help. thanks a lot.

[anthony]

Try using a 'magick' coder of TXT with a small image, then print the result.