Need software to compare pictures to find duplicates

Need software to compare pictures to find duplicates.

I have about 800 wallpaper pictures that I collected from different
sites. When I view them I occasionally see the same picture twice. I
know there are some duplicates, because different sites change the
names of them. Aside from manually trying to find them using
thumbnail images, is there some sort of software (prefer freeware)
that I can download that will find duplicates based on the file size
or the actual content of the .jpg image, even of the names are
different? Most are the same screen size, so they should be identical
except for the name. One site even has duplicates on their site,
which are the same picture with different names. Not to mention I had
to rename many of them, because how many times can a picture be called
(for example), "dog.jpg". Generally how I cope with those, as I save
them, I'll rename them either as dog1.jpg, dog2.jpg, dog3.jpg ......
OR something like collie-dog.jpg. dog-poodle.jpg, black-dog.jpg,
dog_with_toys.jpg, etc.....

On Thu, 24 Nov 2011 00:33:33 -0600, wrote:

Need software to compare pictures to find duplicates.

There may be such software out there waiting to be found, but I'd
personally use a programmatic approach and write something
quick-and-dirty in one's favourite q-n-d language.

"jw" wrote:

Need software to compare pictures to find duplicates.

I have about 800 wallpaper pictures that I collected from different
sites. When I view them I occasionally see the same picture twice. I
know there are some duplicates, because different sites change the
names of them. Aside from manually trying to find them using
thumbnail images, is there some sort of software (prefer freeware)
that I can download that will find duplicates based on the file size
or the actual content of the .jpg image, even of the names are
different? Most are the same screen size, so they should be identical
except for the name. One site even has duplicates on their site,
which are the same picture with different names. Not to mention I had
to rename many of them, because how many times can a picture be called
(for example), "dog.jpg". Generally how I cope with those, as I save
them, I'll rename them either as dog1.jpg, dog2.jpg, dog3.jpg ......
OR something like collie-dog.jpg. dog-poodle.jpg, black-dog.jpg,
dog_with_toys.jpg, etc.....

I use a free program called DupDetector:
http://www.prismaticsoftware.com/dup...pdetector.html

Maybe not the fastest program in the world, but it works pretty good. It's
been a *long* time since I ran Win9x, but IIRC DupDetector works just fine
there.

(I've got 4600+ wallpapers. Never ran DD against *that* directory, but... on
my computer (1GHz Athlon, 7200RPM drive) DD indexed 800 1600x1200 images in a
bit under 9 minutes... but YMMV. No, your mileage *will* vary.)

--
Interestingly, I haven't heard from him since. Or from God.

In message ,
writes:
Need software to compare pictures to find duplicates.

I have about 800 wallpaper pictures that I collected from different
sites. When I view them I occasionally see the same picture twice. I
know there are some duplicates, because different sites change the
names of them. Aside from manually trying to find them using
thumbnail images, is there some sort of software (prefer freeware)
that I can download that will find duplicates based on the file size
or the actual content of the .jpg image, even of the names are
different? Most are the same screen size, so they should be identical
except for the name. One site even has duplicates on their site,
which are the same picture with different names. Not to mention I had
to rename many of them, because how many times can a picture be called
(for example), "dog.jpg". Generally how I cope with those, as I save
them, I'll rename them either as dog1.jpg, dog2.jpg, dog3.jpg ......
OR something like collie-dog.jpg. dog-poodle.jpg, black-dog.jpg,
dog_with_toys.jpg, etc.....


The best duplicate image finder I've come across is Duplicate Image
Finder (DIF), from Runningman Softwa
http://www.rmsft.com/dif/screenshots.html. It compares images of
different formats and sizes, and you can set the percentage similarity.
The trial period should suffice for you. It definitely used to run on
'98 - you can still get a version that definitely mentions '98, at
http://download.cnet.com/Duplicate-I...-10056392.html
, though I don't know if that's the latest that does; Runningman
themselves only mention back to Me on http://www.rmsft.com/support.html,
though both mention the same version number.

But from what you say, you're probably only looking at .jpg files, of
the same size - i. e. quite possibly identical files (though not if of
different compression qualities). For general duplicate file finders,
I'd recommend http://www.satsignal.eu/software/dis...FindDuplicates
which is from the site of the chap who wrote it, or EasyCleaner, from
http://personal.inet.fi/business/toniarts/ecleane.htm, which includes
the same code as part of a nice suite (originally stolen by the suite
writer, though unknowingly, and he and the original coder are friends
now). Both of these must be rubbish, of course, since the download files
are quite small ... (-:
--
J. P. Gilliver. UMRA: 1960/1985 MB++G.5AL-IS-P--Ch++(p)Ar@T0H+Sh0!:`)DNAf

Often at work I wish they'd pay me what I'm worth, but sometimes I'm glad they
don't. (BrritSki, in uk.media.radio.archers, on 2000-12-25.)

In message 00,
Auric__ writes:
"jw" wrote:

Need software to compare pictures to find duplicates.
[]
I use a free program called DupDetector:
http://www.prismaticsoftware.com/dup...pdetector.html

Maybe not the fastest program in the world, but it works pretty good. It's
been a *long* time since I ran Win9x, but IIRC DupDetector works just fine
there.

It says it does on that page.

(I've got 4600+ wallpapers. Never ran DD against *that* directory, but... on
my computer (1GHz Athlon, 7200RPM drive) DD indexed 800 1600x1200 images in a
bit under 9 minutes... but YMMV. No, your mileage *will* vary.)

Looks a great prog.; compares images that have been sharpened,
brightened, or colour modified. The one thing that isn't clear from the
webpages is whether it compares images of different sizes, though I
think it will.
--
J. P. Gilliver. UMRA: 1960/1985 MB++G.5AL-IS-P--Ch++(p)Ar@T0H+Sh0!:`)DNAf

Veni Vidi Visa [I came, I saw, I did a little shopping] - Mik from S+AS Limited
), 1998

J. P. Gilliver (John) wrote:

In message 00,
Auric__ writes:
"jw" wrote:

Need software to compare pictures to find duplicates.
[]
I use a free program called DupDetector:
http://www.prismaticsoftware.com/dup...pdetector.html

Maybe not the fastest program in the world, but it works pretty good.
It's been a *long* time since I ran Win9x, but IIRC DupDetector works
just fine there.

It says it does on that page.

Ah. That whole "reading" thing bites me again. (I didn't read the page when
I went there; I was just making sure it still existed.)

(I've got 4600+ wallpapers. Never ran DD against *that* directory,
but... on my computer (1GHz Athlon, 7200RPM drive) DD indexed 800
1600x1200 images in a bit under 9 minutes... but YMMV. No, your mileage
*will* vary.)

Looks a great prog.; compares images that have been sharpened,
brightened, or colour modified. The one thing that isn't clear from the
webpages is whether it compares images of different sizes, though I
think it will.

It will. You can optionally limit it to only compare images of the same
aspect ratio (within a given percentage of difference), select from 4
different methods to compare by, tell it to use one particular method (not
choosable) if one image is b&w, etc. It's a *very* good program.

--
We may meet in another life, but not again in this one.

In message 00,
Auric__ writes:
[]
http://www.prismaticsoftware.com/dup...pdetector.html
[]
Looks a great prog.; compares images that have been sharpened,
brightened, or colour modified. The one thing that isn't clear from the
webpages is whether it compares images of different sizes, though I
think it will.

It will. You can optionally limit it to only compare images of the same
aspect ratio (within a given percentage of difference), select from 4
different methods to compare by, tell it to use one particular method (not
choosable) if one image is b&w, etc. It's a *very* good program.

Sounds like it! I shall definitely try it on one of my image archives.
Looks like it does everything Duplicate Image Finder does, except for
free - apart from (from the screenshot, anyway) showing you the
pathnames of the two images for matches it's found.
--
J. P. Gilliver. UMRA: 1960/1985 MB++G.5AL-IS-P--Ch++(p)Ar@T0H+Sh0!:`)DNAf

Veni Vidi Visa [I came, I saw, I did a little shopping] - Mik from S+AS Limited
), 1998

J. P. Gilliver (John) wrote:

In message 00,
Auric__ writes:
[]
http://www.prismaticsoftware.com/dup...pdetector.html
[]
Looks a great prog.; compares images that have been sharpened,
brightened, or colour modified. The one thing that isn't clear from the
webpages is whether it compares images of different sizes, though I
think it will.

It will. You can optionally limit it to only compare images of the same
aspect ratio (within a given percentage of difference), select from 4
different methods to compare by, tell it to use one particular method (not
choosable) if one image is b&w, etc. It's a *very* good program.

Sounds like it! I shall definitely try it on one of my image archives.
Looks like it does everything Duplicate Image Finder does, except for
free - apart from (from the screenshot, anyway) showing you the
pathnames of the two images for matches it's found.

No, it only shows the filename below the image -- but it *does* show the path
in the list above the thumbnails. I've never considered that a minus, myself.

--
You aren't nearly through this adventure yet.