Real-time feature extraction from video stream data for stream ...

ai.cs.uni.dortmund.de

Real-time feature extraction from video stream data for stream ...

D. Implemented processors in the streams framework

Processors in Package stream.news.sbdetection

This package provides processors to detect shot boundaries.

Processor GrayThreshold

This processor classifies the incoming frames as ”shot boundaries” or ”no shot

boundary” based on the DiffImages of two successive frames. It can only be applied,

after the DiffImage has already been calculated. If the average gray value of the

DiffImages exceeds a given threshold t, the frame is labeled as a ”shot boundary”.

Parameter Type Description Required

t Integer Sets the threshold t. false

predictionkey String The key, under which the classifier shall store the predicted

label.

graykey String Tells the GrayThreshold processor, where to find the gray

value of the pixels.

Table .22.: Parameters of class GrayThreshold.

false

false

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