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・ Filter (video)
・ Filter bank
・ Filter binding assay
・ Filter bubble
・ Filter cake
・ Filter capacitor
・ Filter design
・ Filter discography
・ Filter driver
・ Filter dryer
・ Filter factor
・ Filter feeder
・ Filter fluorometer
・ Filter Forge
・ Filter funnel
Filter graph
・ Filter object
・ Filter paper
・ Filter press
・ Filter Room
・ Filter strip
・ Filter Theatre
・ Filter theory (sociology)
・ Filter transition region
・ Filtered Air Positive Pressure
・ Filtered algebra
・ Filtered beer
・ Filtered category
・ Filtered Containment Venting System
・ Filtered esophageal left heart electrogram


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Filter graph : ウィキペディア英語版
Filter graph
A filter graph is used in multimedia processing. For example to capture video from a webcamFilters take input, process it or change the input, and then output the processed data. An example of a filter, would be a video codec that takes raw uncompressed video and compresses it using a video standard such as H.264. To compress a multimedia stream a filter graph could have two inputs:
# Audio
# Video
Usually these are expressed as file sources. The file sources would feed compression filters, the output of the compression filters would be fed to a multiplexer that would combine the two inputs and produce a single output. An example of a multiplexer would be an MPEG transport stream creator. Finally the multiplexer output would be fed to a file sink, which would create a file from the output.

A filter graph in multimedia processing is a directed graph. Edges represent one way data flow and nodes represent a data processing step. The term pins or pads are used to describe the connection point between nodes and edges.
==Example of programs that use filter graphs==

* GStreamer - Linux based multimedia framework. In Gstreamer a filter is called an element. Filter graphs can be built with the (GStreamer Editor ).
* GraphEdit - Microsoft tool for building filter graphs
* (GraphStudioNext ) - an open source tool to build and debug DirectShow filter graphs, replacement for GraphEdit
* DirectShow - Windows based multimedia framework.
* (GraphEditPlus ) - a paid tool for building DirectShow filter graphs and generating C++ source code for them.
* (Harpia ) - a graphic interface for learning, implementation and management of vision systems

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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