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 ...

Processors in Package stream.image.features

This package provides several processors for extracting features from images (video

frames).

Processor AverageRGB

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

RGB values over all pixels of that image.

Parameter Type Description Required

includeRatios boolean Sets, if the processor includes the ration between the color

channels, or just the average RGB color values. Ratios are

(red/blue), (red/green), (green/blue).

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

of the image.

Table .10.: Parameters of class AverageRGB.

false

true

Processor CenterOfMass

This processor calculates the Center of Mass of one color channel of the image. You

can either ask for the absolute x- and y-coordinates of the Center of Mass or the

normalized Center of Mass (= absolute Center of Mass / the size of the image).

Parameter Type Description Required

normalized Boolean Sets, if the processor computes the normalized Center of

Mass or the absolute Center of Mass

colorchannel String Sets the color channel, on which the Center of Mass computation

is based on.

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

of the image.

Table .11.: Parameters of class CenterOfMass.

false

false

true

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