Re: Updated patch for Detecting Duplicates in F-Spot

["Bengt Thuree" <bengt thuree com>]

On Må, 2005-09-05, 08:07 pm, Alvaro del Castillo skrev:
> Hi!
>
> On lun, 2005-09-05 at 11:02 +0800, Indulis Bernsteins wrote:

>> What about also using the EXIF data, as well as the filename, date
>> modified, and other "metadata" (implicit or explicit).
>>
>
> Using the EXIF data has the problem that some images could not have EXIF
> data for them.

If we use a point system, then if the image do not have any MetaTag
information at all, then the points associated with this information is 0,
and the only option is file data as well as MD5 data.

>
>> If you have 2 images, you can easily look at the EXIF information
>> common between the 2.  If the camera body serial number is the same,
>> and the date/time of shooting is the same, and the EXIF stored image
>> name is the same, you don't have to check the MD5 sum to know that the
>> 2 are at least derived from the same image.  You can then just check
>> file size.  If they are the same, then you've got a match.
>>
>
> Currently F-Spot code follows this approach:
>
> http://cvs.gnome.org/viewcvs/f-spot/src/PhotoStore.cs?rev=1.71
>
> But I think that the MD5 signature is very useful because you can be
> sure the two files are really the same without error.

I think that he did not say we should not stop doing the MD5 stuff, but
having a point system where MD5 is part of the points. But just looking at
the EXIF data is quicker...


>
>> I think there is a real advantage to losing the "filesystem" oriented
>> approach to managing images, and moving to a metadata-based one.
>> f-spot could become not just an image viewer, but also a darn good
>> image manager!
>
> Yes! But we have to be very careful and not introduce complex concepts
> or configurations that would make F-Spot a solution for Professional
> people.
>

And why not? As long as F-Spot's user-interface is kept simple and well
configured. Perhaps with some advance options buttons which a majority of
the users do not need to touch...? The more people who uses F-Spot the
better I would say... :) And much better for Linux :))


-- 
Bengt Thuree   bengt thuree com    www.thuree.com/bt