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Tag Archives: JavaCV

Using JavaCV with Scala and SBT


Recently I’ve been doing some simple face detection in a Scala-based project. The “industry standard” for such kind of tasks is OpenCV; face detection is one of its basic use-cases.                 However OpenCV is written in C/C++, so obviously to use it from Scala a JVM interface is needed. One of such interfaces ...

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Hand and Finger Detection using JavaCV


This post is part of a series on Natural User Interfaces (NUIs) published by Dr. Andrew Davison and deals with detecting hands from a webcam video feed using JavaCV. Note: all the source code for this chapter is available for download from http://fivedots.coe.psu.ac.th/~ad/jg/nui055/             The colored blob detection code of chapter 5 (available at http://fivedots.coe.psu.ac.th/~ad/jg/nui05/) ...

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Binary websockets with Play 2.0 and Scala


In a recent article I showed how you can use webrtc, canvas and websockets together to create a face detection application whose frontend runs completely in the browser, without the need for plugins. In that article I used a Jetty based backend to handle the image analysis using OpenCV through the JavaCV wrapper. When I almost finished the article, I ...

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