org.openimaj.video.processing.pixels

Class FMeanVarianceField

java.lang.Object

org.openimaj.video.Video<T>

org.openimaj.video.processor.VideoProcessor<T>

org.openimaj.video.analyser.VideoAnalyser<FImage>

org.openimaj.video.processing.pixels.FMeanVarianceField

All Implemented Interfaces:

Closeable, AutoCloseable, Iterable<FImage>

public class FMeanVarianceField
extends VideoAnalyser<FImage>

Compute the mean and variance fields from a video of FImage frames. The generated fields could be used to analyse which parts of a video are stationary or change a lot. If your video consists of multiple shots, between which there are large changes in the content, then it probably makes sense to segment the video using a HistogramVideoShotDetector and apply a new analyser to each shot independently.

Author:

Jonathon Hare (jsh2@ecs.soton.ac.uk)

Constructor Summary

Constructors

Constructor and Description
FMeanVarianceField()

Method Summary

Modifier and Type	Method and Description
void	analyseFrame(FImage frame) Analyse the given frame and make no changes to the frame.
FImage	getMean() Get the mean field of all the frames that have been analysed so far.
FImage	getVariance() Get the variance field of all the frames that have been analysed so far.
void	reset() Reset the accumulated field data.

Methods inherited from class org.openimaj.video.analyser.VideoAnalyser

processFrame

Methods inherited from class org.openimaj.video.processor.VideoProcessor

countFrames, getCurrentFrame, getFPS, getHeight, getNextFrame, getTimeStamp, getWidth, hasNextFrame, process, process, processingComplete

Methods inherited from class org.openimaj.video.Video

close, getCurrentFrameIndex, iterator, seek, setCurrentFrameIndex

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Detail

FMeanVarianceField

public FMeanVarianceField()

Method Detail

analyseFrame

public void analyseFrame(FImage frame)

Description copied from class: VideoAnalyser

Analyse the given frame and make no changes to the frame.

Specified by:

analyseFrame in class VideoAnalyser<FImage>

Parameters:

frame - The video frame to analyse

reset

public void reset()

Reset the accumulated field data.

Overrides:

reset in class VideoProcessor<FImage>

See Also:

VideoProcessor.reset()

getMean

public FImage getMean()

Get the mean field of all the frames that have been analysed so far.

Returns:

the mean field.

getVariance

public FImage getVariance()

Get the variance field of all the frames that have been analysed so far.

Returns:

the variance field.