Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [forensics]

The tag has no usage guidance.

1
vote
1answer
46 views

Can I find anything out from numbers on the back of old photos?

I have some photos of my grandfather's during WWII and the occupation in Japan (1942-1949???). They are from all different places in Japan and were taken at different times. I wanted to know if there ...
0
votes
4answers
107 views

Check if digital picture was taken today?

We're working on an app that registers the gasoline price at a gas station. We enter that information through digital pictures our clients send us; for example, Bob sent us a picture taken today from ...
6
votes
2answers
5k views

Identify date from code on back of print photo

I am digitizing all of my old family photos and was curious if anyone knew how to interpret this code and figure out the date the photo was taken or printed. Either would be fine: Sample Code #1: ...
1
vote
2answers
202 views

How do I use an infrared filter to photograph underwriting on a painting?

I have a painting where one can see underwriting under the painting. I purchased a used Olympus E-510 and a 950nm IR filter, but I cannot figure out how to use it. Do I have the correct filter? I ...
9
votes
6answers
3k views

Can I find out if two pictures were taken by the exact same device?

So, let's say I have two identical iPhones, both of them are the same model and are running the same iOS. I then proceed to have someone pull a random picture off of one of the phones without telling ...
4
votes
1answer
307 views

Has this image apparently depicting a block of wood which looks like a dog's face been digitally altered?

I recently came across this photograph which looks extraordinarily suspect: Can the Photo.SE community determine if it is fake? I've played with the Gamma, Brightness, and other levels but cannot ...
0
votes
1answer
157 views

Can I tell if photos were taken by person or self-timer used?

I am getting photos from someone who is using their cell phone and sending me photos is it possible to tell if the photos were taken by using the self-timer or had to be taken by a person?
4
votes
1answer
112 views

dating photos by size of print

I have hundreds of photos I'd like to assign a year to and I am hoping to find a chart that would contain the year span prints were developed based on the size of the print such as 2 1/2 x 4 1/4, 3 1/...
6
votes
3answers
1k views

If EXIF metadata is removed, can I find the software or camera used in any other way?

I have a JPEG photo that has had its EXIF data completely removed. I know the photo was edited. Is there any data left in the altered JPEG that points to image editors or equipment used? For example, ...
0
votes
2answers
156 views

Can a ghostlike image be caused by a overlap with previous frame on an SD card?

Is it possible for a secure digital card to have a ghostlike image on a different frame, ff you shoot digital cards and do not reformat them? Could a ghost image appear from a previous frame number if ...
0
votes
3answers
224 views

Can it be detected that a photo has been altered using MacBookPro “Preview”?

I have some photos from Canon camera. I opened them in "Preview" in MacBookPro, changed some of the contrast and colors, and saved as. I am sending these altered photos to people, but wondered, is it ...
0
votes
1answer
174 views

Is this a real photo of NYC?

I found this somewhere online, unattributed. I'm wondering if it's synthetic or a real photo. If it's real, how has it been shot and/or post-processed to make it look so much like a computer game - ...
2
votes
2answers
5k views

How to identify if a photo is photoshopped without looking at its digital code

I found this similar question but it is about finding hints in the digital file :how-to-identify-photoshop-edited-files. I want to know if there is a way to do this without looking at the digital ...
-1
votes
1answer
3k views

How to calculate object's height in pixels from an image? [duplicate]

Possible Duplicate: Calculate object size when I have physical pixel size I am working on the following formula to calculate distance of object from camera: distance to object (mm) = focal ...
3
votes
5answers
3k views

Is it possible to get a double exposure with a digital camera?

A lady took a photo on a ghost tour where three transparent figures appeared in the photo. The camera was a Pentax Optio S30 3.2 megapixel digital camera. This lady did not recognise the figures and ...
8
votes
4answers
5k views

How can I tell if a photo is real or faked?

How can I tell if a photo has been edited or manipulated? Are there techniques for distinguishing real photos from fakes? Are there software tools that can help? Are there things I can do in ...
4
votes
2answers
13k views

How to determine date photo shot or developed from pre-digital age pictures?

I hope to learn how to determine (approximately) when a picture was taken and/or developed. I have a few boxes of photos to be scanned but prior to doing so I would like to be able to have a better ...