Re: Storing small image files

2013/5/10 Eduardo Morras <emorrasg(at)yahoo(dot)es>

>
> Hi Nelson. I worked with images and Postgresql, and want to add some
> comments:
>
> On Thu, 9 May 2013 13:40:15 -0500
> Nelson Green <nelsongreen84(at)gmail(dot)com> wrote:
> > OK, this is kind of convoluted, but I got a couple of test cases that
> work
> > for me. The steps to make the first one are below.
> >
> > First I took one of the photos and shrunk it real small using GIMP.
>
> If you want to manipulate images automatically, don't use GIMP, use
> ImageMagick(for shell scripts) or OpenCV(for C sourcecode)
>
> > Then I
> > manually converted that to a base64 encoded text file:
> > /usr/bin/base64 < test.jpg > test.64
>
> If you must to use the pg shell, perhaps coding Misa's function in other
> language (python f.ex.) allows you directly insert the bytea.
>
>
well, with pl/python there is more power - no need to use
lo_largobejects... However solution for him is not in function because of
file is on different machine then Postgres...

I think Nelson has found solution what works for him...

But now, what Thomas Keller suggested sounds as very good approach if user
doesn't want to write his own client code...

A use hint: disable toast compression for that table, images are already
> compressed, you don't need to waste time with it.

> > That outputs a base64 string that matches test.64. Outputting that to a
> > file and then converting it back gives me my image:
> > /usr/bin/base64 -d < output.64 > newtest.jpg
> >
> > Like I said, kind of crazy, but it satisfies me that my basic premise is
> > doable. I'll still get one of the front-end developers to whip out some
> PHP
> > just to be safe.
> >
> > Thanks to all!
>
> --- ---
> Eduardo Morras <emorrasg(at)yahoo(dot)es>
>
>
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