资 源 简 介
This is a fast open source document image retrieval application. The document image feature is based on projection histogram feature and density distribution feature. The similarity is calculated by the Cosine similarity.
Dependencies
OpenCV 2.2 or later version
(Only core and imgproc modules are included, and highgui for load image.)
Known Development Environment
VS2005, VS2008, VS2010 express
Document Image Features
The following two features can be extracted quickly. They are all scalable and "fused" into a high-dimension vector for each image.
More details are in the wiki page:
http://code.google.com/p/opendir/wiki/OpenDIRImageFeatures
Similarity
In the default settings, cosine similarity between the vectors are calculated.
The project also includes Euclidean distance methods.
http://en.wikipedia.org/wiki/Cosine_similarity
How to use
OpenD
