Edge Density Measure
This measure is given by eq. 2 in
An Adaptive Multiscale Information Fusion Approach for Feature Extraction and Classification of IKONOS Multispectral Imagery Over Urban Areas Xin Huang; Liangpei Zhang; Pingxiang Li; Geoscience and Remote Sensing Letters, IEEE Volume 4, Issue 4, Oct. 2007 Page(s):654 - 658
- Binarize the image using a Canny edge detector (other edge detectors could be used)
- Compute the density of edge pixels with a sliding window
In terms of implementation, one should use the same counting framework described in SIFT density image function and filter.
the following class were implemented :
* otb::BinaryDensityFunction : a density count strategy, implements the evaluate method of the ImageFunction * otb::BinaryImageToDensityImageFilter: this class is templated with the count strategy type. * otb::EdgeDensityImageFilter : this class is templated with the edge detector type and the count strategy type. It uses the class below.