Uses in Video Production
Video post-processing is the process of changing the perceived quality of a video on playback (done after the decoding process). Image scaling routines such as linear interpolation, bilinear interpolation, or cubic interpolation can for example be performed when increasing the size of images, this involves either subsampling (reducing or shrinking an image) or zooming (enlarging an image). This helps reduce or hide image artifacts and flaws in the original film material. It is important to understand that post-processing always involves a trade-off between speed, smoothness and sharpness.
- Image scaling and multivariate interpolation:
- Nearest-neighbor interpolation
- linear interpolation
- bilinear interpolation
- cubic interpolation
- bicubic interpolation
- Bézier surface
- Lanczos resampling
- trilinear interpolation
- Tricubic interpolation
- SPP (Statistical-Post-Processing)
- Deblocking
- Deringing
- Sharpen / Unsharpen (often referred to as "soften")
- Requantization
- Luminance alterations
- Blurring / Denoising
- Deinterlacing
- weave deinterlace method
- bob deinterlace method
- linear deinterlace method
- yadif deinterlace method
- Deflicking
- 2:3 pull-down / ivtc (inverse telecine) for conversion from 24 frames/s and 23.976 frames/s to 30 frames/s and 29.97 frames/s
- 3:2 pull-up (telecine conversion) for conversion from 30 frames/s and 29.97 frames/s to 24 frames/s and 23.976 frames/s
Read more about this topic: Video Post-processing
Famous quotes containing the words video and/or production:
“We attempt to remember our collective American childhood, the way it was, but what we often remember is a combination of real past, pieces reshaped by bitterness and love, and, of course, the video past—the portrayals of family life on such television programs as “Leave it to Beaver” and “Father Knows Best” and all the rest.”
—Richard Louv (20th century)
“Constant revolutionizing of production ... distinguish the bourgeois epoch from all earlier ones. All fixed, fast-frozen relations, with their train of ancient and venerable prejudices are swept away, all new-formed ones become antiquated before they can ossify. All that is solid melts into air, all that is holy is profaned, and man is at last compelled to face with sober senses, his real conditions of life, and his relations with his kind.”
—Karl Marx (1818–1883)