defocus
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English
[edit]Etymology
[edit]Pronunciation
[edit]Verb
[edit]defocus (third-person singular simple present defocuses or defocusses, present participle defocusing or defocussing, simple past and past participle defocused or defocussed)
Noun
[edit]defocus (uncountable)
- The process of going out of focus.
- (optics) The distance by which the focal point is in front of (positive defocus) or beyond (negative defocus) the image or target surface.
- 2012, Subhasis Chaudhuri, A. N. Rajagopalan, Depth From Defocus: A Real Aperture Imaging Approach, page 16:
- Fundamental to the concept of recovering the depth by measuring defocus is the relationship between the focused and the defocused images of a scene.