the process of combining multiple exposures to increase sharpness, reduce noise or for special effects, e.g. star trails
Image stacking is often used in astrophotography. By combining multiple images and averaging the results, random noise will be reduced.
Short exposures of the stars taken by a fixed camera can be combined by stacking to produce star trails.
The technique can also be used in landscapes, where multiple images are taken with different apertures
- What is image stacking as it relates to astrophotography?
- How can I simulate a long exposure photo using a set of shorter exposure photos?
- Can stacking multiple exposure images in post-processing give the same effect as a long exposure?
- Can I combine several low quality pics into one higher quality picture?
- How does averaging images or lowering resolution reduce noise?