In
video processing In electronics engineering, video processing is a particular case of signal processing, in particular image processing, which often employs video filters and where the input and output signals are video files or video streams. Video processing ...
, deflicking is a
filter
Filter, filtering or filters may refer to:
Science and technology
Computing
* Filter (higher-order function), in functional programming
* Filter (software), a computer program to process a data stream
* Filter (video), a software component tha ...
ing operation applied to
brightness
Brightness is an attribute of visual perception in which a source appears to be radiating or reflecting light. In other words, brightness is the perception elicited by the luminance of a visual target. The perception is not linear to luminan ...
flicker in video to improve visual quality. The flicker effect can be seen when camera
framerate
Frame rate (expressed in or FPS) is the frequency (rate) at which consecutive images ( frames) are captured or displayed. The term applies equally to film and video cameras, computer graphics, and motion capture systems. Frame rate may also be ...
and lighting frequency are not adjusted or in video
digitized old film. The filter aims to improve the appearance of movies.
The main idea is to smooth image brightness between series of the same scene frames.
The deflicking filter is usually used in video camera (for normalizing picture), used for
postprocessing of captured video, and for restoration of video from old films.
*
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