Stack Exchange Network

Stack Exchange network consists of 174 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
Untitled

Untitled
by Vaman Kulkarni

Submit your Photo
Hall of Fame

Please participate in Meta
and help us grow.

Image analysis is when one inspects an image or the properties of an image either manually or through various tools and algorithms including, but not limited to Fast Fourier Transform and Error Level Analysis (ELA).

1
vote
2answers
298 views

How to determine Spatial Resolution in an image?

I am new to the field of cameras and imaging. I am working with an industrial camera. I need to check if the camera captured sufficient detail in the image and whether the images are good enough to ...
7
votes
3answers
216 views

Is there a program that could analyze the “real” resolution of an image?

Let's take image A: 2560*1920 pixel image in perfect focus. Sharp as a razor. That's 5 Mpix. Let's take image B: image A resized to 5120*3840. It's now a 20 Mpix file, but there's no new data in the ...
-4
votes
1answer
127 views

One photograph or two?

There are two prints of the same subject (Lorina Liddell by Lewis Carroll), but I'm not sure if I'm seeing two different prints of the very same negative or they are two similar, but distinct shots of ...
8
votes
2answers
366 views

How can I figure out precisely where someone was standing to take this old cityscape photograph?

This photograph of Spokane (source) was taken in 1915. I've identified six of the buildings in the picture, and would like to figure out where the photographer was standing so I can make a modern ...
3
votes
1answer
172 views

Can I recreate this spark shower effect using a smartphone?

Original picture : https://www.instagram.com/p/BN2WgMujfIT/ Those flashy lines are what I'm talking about and the contrast of the whole picture in general, can I do this with a smartphone (with some ...
0
votes
0answers
45 views

Image manipulation [duplicate]

I need your help to find out if a photo is photoshoped. I tried on http://fotoforensics.com the el analysis, but I don't understand the results. Can anyone see the photo and tell me if it is fake?
8
votes
2answers
307 views

Photo of an experiment

I have an experiment with the specimen 100m long and 3m wide. I would like to capture the the image of entire specimen (from top) for fixed time intervals to analyze the behavior with time using some ...
1
vote
4answers
4k views

How do I find the absolute color of someone's eyes in a photograph?

The color of my eyes is between green and blue. I've always been curious if it's more blue or more green. People's opinions are of course different, so I would like to find it out scientifically. How ...
6
votes
4answers
1k views

Analysis of a macro shot with very fast shutter speed

Recently I came across a macro photo here, with this properties: Focal Length: 105mm Shutter Speed: 1/3200 sec Aperture: f/4 ISO/Film: 200 So I am looking for possible reasons as to why such ...
11
votes
3answers
22k views

How to analyze images with Fast Fourier Transform method?

I am learning about analyzing images with the method of FFT(Fast Fourier Transform). The image I am analyzing is attached below: Portrait of woman posing on grass, by George Marks. Getty Images. And ...