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The term post-processing (or postproc for short) is used in the video/film business for quality-improvement image processing (specifically digital image processing) methods used in video playback devices, (such as stand-alone DVD-Video players), and video players software and transcoding software. It is also commonly used in real-time 3D rendering (such as in video games) to add additional effects. ==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 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Video post-processing」の詳細全文を読む スポンサード リンク
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