qa.qcri.prepocressor.operations.feat

Class RawFeatureExtractor

java.lang.Object

qa.qcri.prepocressor.operations.feat.FeatureExtractor

qa.qcri.prepocressor.operations.feat.RawFeatureExtractor

public class RawFeatureExtractor
extends FeatureExtractor

This is a slightly more general version of a raw pixel feature extractor. It uses the mean of submatrices in the frame as features, where the sub matrices have the same width as the frame, height according featRawCellHeight and position according featRawCellShift (parameters of conf).

Author:

Felix Stahlberg

Constructor Summary

Constructors

Constructor and Description
RawFeatureExtractor(Configuration conf)

Method Summary

Methods

Modifier and Type	Method and Description
java.util.List<java.lang.Double>	extractFeatures(org.opencv.core.Mat whole, org.opencv.core.Mat frame) Splits the input frame into cells with frame width and featRawCellHeight height.

Methods inherited from class java.lang.Object

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

Constructor Detail

RawFeatureExtractor

public RawFeatureExtractor(Configuration conf)

Method Detail

extractFeatures

public java.util.List<java.lang.Double> extractFeatures(org.opencv.core.Mat whole,
                                               org.opencv.core.Mat frame)

Splits the input frame into cells with frame width and featRawCellHeight height. Extract features every featRawCellShift y position. Extract features from the given frame. The length of the returned array should be always the same as long as the height of the frame matrix stays the same.

Specified by:

extractFeatures in class FeatureExtractor

Parameters:

whole - whole input frame

frame - current frame from which to extract features

Returns:

list of features or null if an error occurred