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  2. Rod (optical phenomenon) - Wikipedia

    en.wikipedia.org/wiki/Rod_(optical_phenomenon)

    A 2000 report by staff at "The Straight Dope" also explained rods as such phenomena, namely tricks of light which result from how (primarily video) images of flying insects are recorded and played back, adding that investigators have shown the rod-like bodies to be a result of motion blur, if the camera is shooting with relatively long exposure ...

  3. Visual artifact - Wikipedia

    en.wikipedia.org/wiki/Visual_artifact

    The gray spot in the center is a shadow artifact. Image quality factors, different types of visual artifacts; Compression artifacts; Digital artifacts, visual artifacts resulting from digital image processing; Noise; Screen-door effect, also known as fixed-pattern noise (FPN), a visual artifact of digital projection technology; Ghosting ...

  4. Compression artifact - Wikipedia

    en.wikipedia.org/wiki/Compression_artifact

    A compression artifact (or artefact) is a noticeable distortion of media (including images, audio, and video) caused by the application of lossy compression. Lossy data compression involves discarding some of the media's data so that it becomes small enough to be stored within the desired disk space or transmitted ( streamed ) within the ...

  5. Chroma subsampling - Wikipedia

    en.wikipedia.org/wiki/Chroma_subsampling

    It is this difference that can result in motion artifacts. The MPEG-2 standard allows for an alternate interlaced sampling scheme, where 4:2:0 is applied to each field (not both fields at once). This solves the problem of motion artifacts, reduces the vertical chroma resolution by half, and can introduce comb-like artifacts in the image. Original.

  6. Digital artifact - Wikipedia

    en.wikipedia.org/wiki/Digital_artifact

    A complicated grid pattern is insufficiently processed by a smartphone camera. A scan of a drawing with large areas of whitespace; the diamond Moiré pattern is a scanning artifact. Digital artifact in information science, is any undesired or unintended alteration in data introduced in a digital process by an involved technique and/or technology.

  7. Rolling shutter - Wikipedia

    en.wikipedia.org/wiki/Rolling_shutter

    The rolling shutter causes the image to wobble unnaturally. Skew. The image bends diagonally in one direction or another as the camera or subject moves from one side to another, exposing different parts of the image at different times. Skew is a minor manifestation of the wobble phenomenon described above. Spatial aliasing. Vertically adjacent ...

  8. Screen tearing - Wikipedia

    en.wikipedia.org/wiki/Screen_tearing

    A typical video tearing artifact (simulated image) Screen tearing [1] is a visual artifact in video display where a display device shows information from multiple frames in a single screen draw. [2] The artifact occurs when the video feed to the device is not synchronized with the display's refresh rate.

  9. Spatial anti-aliasing - Wikipedia

    en.wikipedia.org/wiki/Spatial_anti-aliasing

    In digital signal processing, spatial anti-aliasing is a technique for minimizing the distortion artifacts when representing a high-resolution image at a lower resolution. Anti-aliasing is used in digital photography , computer graphics , digital audio , and many other applications.