JPEGSnoop Sniffs Out Signs of Editing

Topics covering photography and videography of the flora, fauna and landscape of the Sierra Nevada mountains. Show off your talent. Post your photos and videos here!
User avatar
ERIC
Your Humble Host & Forums Administrator
Your Humble Host & Forums Administrator
Posts: 3254
Joined: Fri Oct 28, 2005 9:13 am
Experience: Level 4 Explorer
Location: between the 916 and 661

JPEGSnoop Sniffs Out Signs of Editing

Post by ERIC »

New members, please consider giving us an intro!
Follow us on Twitter @HighSierraTopix. Use hashtags #SIERRAPHILE #GotSierra? #GotMountains?
Follow us on Facebook: https://www.facebook.com/HighSierraTopix
User avatar
copeg
Founding Member & Forums Administrator
Founding Member & Forums Administrator
Posts: 2109
Joined: Fri Oct 28, 2005 9:25 pm
Experience: Level 4 Explorer
Location: Menlo Park, CA
Contact:

Re: JPEGSnoop Sniffs Out Signs of Editing

Post by copeg »

I'm very interested in trying this, esp on a few of my photos I know to be 'edited', and a few I know were not 'edited'...just for kicks and giggles. Too bad there's no mac version
User avatar
ERIC
Your Humble Host & Forums Administrator
Your Humble Host & Forums Administrator
Posts: 3254
Joined: Fri Oct 28, 2005 9:13 am
Experience: Level 4 Explorer
Location: between the 916 and 661

Re: JPEGSnoop Sniffs Out Signs of Editing

Post by ERIC »

Let us know how it works for you. I'm also curious to know how accurate it really is.
New members, please consider giving us an intro!
Follow us on Twitter @HighSierraTopix. Use hashtags #SIERRAPHILE #GotSierra? #GotMountains?
Follow us on Facebook: https://www.facebook.com/HighSierraTopix
User avatar
TehipiteTom
Founding Member
Posts: 953
Joined: Thu Aug 24, 2006 8:42 am
Experience: Level 4 Explorer

Re: JPEGSnoop Sniffs Out Signs of Editing

Post by TehipiteTom »

Hmmm...I don't know about this:
In fairness however, the application doesn't have the capacity to judge the difference between a photo being cropped and getting a contrast adjustment in Photoshop versus, say, being cropped and having Godzilla added in, but it is a strong indicator of whether any editing has occurred.
If it really can't distinguish between cropping (full disclosure: I crop 80% of my images) and something like those ubiquitous over-processed HDR deals, then it doesn't sound all that useful.
User avatar
maverick
Forums Moderator
Forums Moderator
Posts: 11823
Joined: Thu Apr 06, 2006 5:54 pm
Experience: Level 4 Explorer

Re: JPEGSnoop Sniffs Out Signs of Editing

Post by maverick »

I took a look and said interesting, and then asked what is the purpose of this?
If your going to shoot in raw than you have you edit the photo no matter what
so what is the use?
Last edited by maverick on Tue Mar 17, 2009 9:57 am, edited 1 time in total.
User avatar
SteveB
Founding Member
Posts: 228
Joined: Sat Oct 29, 2005 10:08 pm
Experience: N/A
Location: Reno, NV

Re: JPEGSnoop Sniffs Out Signs of Editing

Post by SteveB »

Mav is right... anyone shooting digital these days (and everyone shooting RAW) will be editing their images to some degree. From cropping to contrast adjustments to wholesale editing (I've removed telephone poles from a nice turn-of-the-century settler shack image) and obscene over-sharpening, people edit. How well you do it determines whether it's noticed or not. Nothing I hate more than an image that has the green kicked up too high and has been over-sharpened. The Iranian missile launch with 50 launchers in plain sight? Obvious, but hilarious... :)
User avatar
copeg
Founding Member & Forums Administrator
Founding Member & Forums Administrator
Posts: 2109
Joined: Fri Oct 28, 2005 9:25 pm
Experience: Level 4 Explorer
Location: Menlo Park, CA
Contact:

Re: JPEGSnoop Sniffs Out Signs of Editing

Post by copeg »

maverick wrote:so what is the use?
Like I said, for kicks and giggles :) Actually I can see at least one use...in scientific journal submissions. I know of at least one journal that claims to perform routine checks (with I guess similar software) on submitted data.
User avatar
SSSdave
Topix Addict
Posts: 3523
Joined: Thu Nov 17, 2005 11:18 pm
Experience: N/A
Location: Silicon Valley
Contact:

Re: JPEGSnoop Sniffs Out Signs of Editing

Post by SSSdave »

Maybe useful for current event newspaper submissions. What value is unedited photographs out of a digital camera if the result is unnatural? The one thing of value with such a program might be to prove graphic content is real. RAW certainly doesn't deliver close to natural and neither does 99+% of what comes out of digital cameras unless they have pricy calibration like commercial product photographers so even if someone wanted natural they wouldn't be able to deliver it.

There are two basic divisions, graphic changes and luminance and color changes. A lot of photographers used to refrain from much graphic manipulation but that ethic has been receding quickly. For landscape work most manipulated work on color and luminance is obvious. Better is to simply look at a photographer's body of work that make such instantly obvious. Today the landscape and nature status quo is unnatural contrasty and saturated. Those that have an interest in reasonably natural work as per my style are uncommon.
User avatar
markorr
Topix Acquainted
Posts: 78
Joined: Wed Jul 11, 2007 3:25 pm
Experience: N/A

Re: JPEGSnoop Sniffs Out Signs of Editing

Post by markorr »

SSSdave wrote:Today the landscape and nature status quo is unnatural contrasty and saturated. Those that have an interest in reasonably natural work as per my style are uncommon.
I realize I'm going to open a can of worms by saying this, but....what is "natural"? As perceived by the viewer of the event? If so how do you account for variations in perception? Is unmanipulated once captured, natural? Then how do you account for different white balance etc settings on the camera or for the old school, for differences in shutter speed (particularly true for photographing moving water). I personally don't do much manipulation in silico, mostly b/c I don't like to be on the computer that much, however I will adjust crooked images or alter contrast, etc if I like the basic content of the image. For me personally its about communicating how I feel about the image.

BTW most scientific journals in the biology realm look for altered images. They have pretty stringent rules on how images can be manipulated and how you make it clear that its been altered. My day job is a bench scientist so I run into this a lot, both in presenting data and reviewing others.
User avatar
copeg
Founding Member & Forums Administrator
Founding Member & Forums Administrator
Posts: 2109
Joined: Fri Oct 28, 2005 9:25 pm
Experience: Level 4 Explorer
Location: Menlo Park, CA
Contact:

Re: JPEGSnoop Sniffs Out Signs of Editing

Post by copeg »

markorr wrote:BTW most scientific journals in the biology realm look for altered images. They have pretty stringent rules on how images can be manipulated and how you make it clear that its been altered. My day job is a bench scientist so I run into this a lot, both in presenting data and reviewing others.
I misread your first sentence and thought "that ain't right", until I understood your point (at least, I think I did) - I read it as they look (as in look to publish) altered images :eek:
Post Reply

Who is online

Users browsing this forum: No registered users and 27 guests