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

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

D. Implemented processors in the streams framework

Processor ColorHistogram

This processor computes a color histogram on one color channel of an image.

Parameter Type Description Required

bins Integer Sets the number of bins the color channel is discretized into. false

colorchannel String Sets the color channel the histogram is computed for. false

image String The name of the attribute that contains the byte array data

of the image.

Table .12.: Parameters of class ColorHistogram.

true

Processor MedianRGB

This processor extracts RGB colors from a given image and computes the median value

for each color channel.

Parameter Type Description Required

image String The name of the attribute that contains the byte array data

of the image.

Table .13.: Parameters of class MedianRGB.

true

Processor StandardDeviationRGB

This processor computes the standard deviation for all three RGB channels. Requires

the Average (=Mean) value for all RGB channels to be included already. This can for

example be done by using the AverageRGB processor.

Parameter Type Description Required

image String The name of the attribute that contains the byte array data

of the image.

Table .14.: Parameters of class StandardDeviationRGB.

true

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