Feynman Liang created SPARK-8490:
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             Summary: SURF Feature Transformer
                 Key: SPARK-8490
                 URL: https://issues.apache.org/jira/browse/SPARK-8490
             Project: Spark
          Issue Type: Sub-task
          Components: ML
            Reporter: Feynman Liang


Speeded up robust features (SURF) (Bay et al, ECCV 2006, 
http://www.vision.ee.ethz.ch/~surf/eccv06.pdf) is an image descriptor transform 
very similar to SIFT (SPARK-8486) but can be computed more efficiently. One key 
difference is using box filters (Difference of Boxes) to approximate the 
Laplacian of the Gaussian.

We can implement SURF in Spark ML pipelines as a 
org.apache.spark.ml.Transformer. Given an image Array[Array[Numeric]], the SIFT 
transformer should output an ArrayArray[[Numeric]] of the SURF features for the 
provided image.



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