Legacy ImageMagick Discussions Archive

I can control the lighting by adjusting LCD backlight control. However, if with more lighting flicker is hard to observe. So there is a specific light setting which I use to detect if flicker is present.

(I am using max ISO on camera which is 20 MP)

Thanks, I checked with Gimp and I can see the movement. I will try to take more images. I am using camera on phone it saves only jpeg format unless i find a way to save in raw format.

Basically I am trying to establish the fact that image captured at two different instants of time show differences, in other words they are not 100% identical. I am not sure how to represent & find the differences. Few things I can think of is brightness, lighting etc. As you can see from the images ...

Snibgo, here is the link two images taken at different instant of time which I am try to process:
https://www.dropbox.com/sh/nbzw0zl3gojn ... rqCba?dl=0

I am new to Image processing and have learnt only few bits using Octave + net resources. I am trying to subtract two images A & B. A contains noise and B doesn't. Both of these images are gray (blank shaded of gray white image) and the noise looks like a a few dark shaded pixels runnnig horizontally ...