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  2. Median filter - Wikipedia

    en.wikipedia.org/wiki/Median_filter

    The median filter is a non-linear digital filtering technique, often used to remove noise from an image, [1] signal, [2] and video. [3] Such noise reduction is a typical pre-processing step to improve the results of later processing (for example, edge detection on an image).

  3. Freemake Video Converter - Wikipedia

    en.wikipedia.org/wiki/Freemake_Video_Converter

    Freemake Video Converter 2.0 was a major update that integrated two new functions: ripping video from online portals and Blu-ray disc creation and burning. [13] [14] Version 2.1 implemented suggestions from users, including support for subtitles, ISO image creation, and DVD to DVD/Blu-ray conversion. [15]

  4. List of video editing software - Wikipedia

    en.wikipedia.org/wiki/List_of_video_editing_software

    The following is a list of video editing software.. The criterion for inclusion in this list is the ability to perform non-linear video editing.Most modern transcoding software supports transcoding a portion of a video clip, which would count as cropping and trimming.

  5. Compression artifact - Wikipedia

    en.wikipedia.org/wiki/Compression_artifact

    September 2007) (Learn how and when to remove this message) Original image, with good text edges and color grade Loss of edge clarity and tone "fuzziness" in heavy JPEG compression A compression artifact (or artefact ) is a noticeable distortion of media (including images , audio , and video ) caused by the application of lossy compression .

  6. Noise reduction - Wikipedia

    en.wikipedia.org/wiki/Noise_reduction

    Noise reduction is the process of removing noise from a signal. Noise reduction techniques exist for audio and images. Noise reduction algorithms may distort the signal to some degree. Noise rejection is the ability of a circuit to isolate an undesired signal component from the desired signal component, as with common-mode rejection ratio.

  7. Digital watermarking - Wikipedia

    en.wikipedia.org/wiki/Digital_watermarking

    In general, it is easy to create either robust watermarks or imperceptible watermarks, but the creation of both robust and imperceptible watermarks has proven to be quite challenging. [2] Robust imperceptible watermarks have been proposed as a tool for the protection of digital content, for example as an embedded no-copy-allowed flag in ...

  8. Cinavia - Wikipedia

    en.wikipedia.org/wiki/Cinavia

    Cinavia works to prevent copying via the detection of a watermark recorded into the analog audio of media such as theatrical films and Blu-ray Discs. The intent is to prevent all copying, both counterfeit copies and legal copies of one's own content (for example, format shifting).

  9. Active noise control - Wikipedia

    en.wikipedia.org/wiki/Active_noise_control

    The wavelength in air of sinusoidal noise at approximately 800 Hz is double the distance of the average person's left ear to the right ear; [1] such a noise coming directly from the front will be easily reduced by an active system but coming from the side will tend to cancel at one ear while being reinforced at the other, making the noise ...