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Subject: Re: Storing Photographs
Author: Elias
Posted: 2000/11/30 19:31:34
 
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Ruslan

> Elias, can you describe your task in details ?
> I just want better see real life tasks

Currently, I am working on a Projection Engine. It is for creating
customisable visual displays for clubs and shows...basically a database
stores the images at a given size (for now, they have to be at the right
size already, but I am thinking of doing in-App scaling) and then allows the
user to build sequences of images. The sequence data is then stored in a
second DB, and when one of these is loaded, it displays the images according
to the chosen pattern/sequence.

The import goes through the following steps:

Find path
Import File into Director Member (using FileName of Member)
Set Variable = Picture of Member
Create Thumbnail as scaled version of data in Variable
Put Image and Thumb into DB

It is painfully slow for even moderate numbers of images (300+)...I think
that binding the picture of a member to the field in the DB, and using that
to create the thumb would be MUCH faster...

> Solution is:
> 1) have built in algorithms to compress some formats
> (JPG for now, I also have see libs for TIFF, GIF).
> 2) If QT present then it can be used.

Excellent !

Elias.

FWIW: When I was using V4RB, I was working on something similar to what
Jonathan seems to be doing...also for a Photo Archive (of sorts) and many of
the same issues came up there...


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©2000 Elias
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