# Tagged Questions

step by step procedure to calculate a value

185 views

### Aerial Camera Ground Footprint Calculation

I have a very simple math problem, but I cannot seem to figure it out. I need to calculate what portion of the ground will be visible when viewed from a UAV mounted camera. I believe I have it solved ...
84 views

### algorithm deflickering timelapse shots?

before you ask yes I already saw this subject(What algorithm can be used for deflickering timelapse shots?) The answer of Matt Grum is nearly what I'm looking for but I need more precision and I ...
402 views

### How does 18% exposure algorithm work?

They all say and teach the rule that camera exposes to 18% grey. Then they go and show an example of shooting a white board or black board and they both show as a grey board in the camera. Great, but ...
635 views

### Would a demosaic algorithm for black and white be useful?

Given that the main purpose of demosaicing is to recover colour as accurately as possible, would there be any advantage to a "black and white only" demosaic algorithm? That is, instead of first ...
491 views

### What algorithm can be used for deflickering timelapse shots?

What are deflicker algorithms used to deflicker stills that should be composed to a timelapse movie? (Flickering caused by shutterspeed adjustments in sunset/sunrise shots...)
905 views

### How does “smile shot” work in cameras?

Nowadays some advanced cameras have the feature of "smile shot" without the photographer pressing the shutter. How do the cameras achieve this? How does it recognise the smile?
276 views

### Does the curves tool in Photoshop (or any software) do anti-aliasing?

I'm not talking about drawing smooth curves here, but rather the curves tool used for adjusting color levels. An illustration will be worth a thousand words, here. This is an adjustment in Gimp: ...
318 views

### How to understand the definition of dynamic range?

I have the following formula: DR=(1.4L_Sat G_i)/N_D where DR is the dynamic range; L_sat is the luminance at the “margin level”，70.1% of the maximum recordable （saturation）luminance（yes，L_sat is ...
248 views

### some criteria when a filter looks good

I'm a developer who wants to figure out when a filter would look good applied to a given image. For example, I have sepia, solarisation and pencil filters. Okay, the perception will be very ...
148 views

### Learning about photography algorithms [closed]

I'm very interested in learning about algorithms in photography (in particular processing photos). In addition to algorithms, I'm interested in learning about photo formats (probably RAW and jpeg the ...