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Free and open-source tracking environment for optical multitouch tables Touche is a tracking environment that has been written for Mac OS X Leopard and uses many of its core technologies, such as QuickTime, Core Animation, Core Image and the Accelerate framework. In order to achieve good tracking performance Touche also uses high-quality open-source libraries such as OpenCV and libdc1394.The Touche environment consists of two parts: a standalone tracking application written in Cocoa, that comes with lots of configuration options as well as calibration and test tools, and a Cocoa framework that can be embedded into custom applications in order to receive tracking data from the tracking application. This way, you can easily experiment with Mac OS X technologies such as Core Animation or Quartz Composer on your multitouch table. Here are some key features of "Touche": · Written from the ground up in Cocoa. · Supports QuickTime-compatible cameras, FireWire cameras and Wii Remotes. · Universal binary (though a somewhat recent G5 or Intel Mac is recommended). · 64-bit support: Runs in native 64-bit mode on 64-bit Macs. · Plenty of Core Image filters for good tracking results. · Tracks bright blobs on dark background or dark blobs on bright background. · Optionally tracks blobs based on a reference color. · Uses the efficient OpenCV library for blob detection. · Makes use of the Accelerate framework for optimal performance. · Easy and efficient communication with the tracker via Cocoa Distributed Objects. · Optional TUIO output. · Optional TUIO output over Flash XML-Socket for direct use with Flash applications. · Calibration and Test tool built right into the tracker. · Lets you select which screen to use for multitouch applications. · Support for "resolution independence" (which is good for rear projection screens). · Open-source under the LGPLv3. · You can customize the color of the status bar Requirements: · optical (FTIR, Lasers, DI) multitouch table · QuickTime-compatible camera · libdc1394-compatible FireWire camera What's New in This Release: · Native support for TUIO/Flash XML-Socket tracking data. · Frames can be thresholded based on distance from a reference color. · A setting for the maximum motion displacement between two frames for which a blob should still be matched in two consecutive frames. · Nicer tracking indicators in the blob tracking preview views. · Plenty of minor bugfixes. · Performance improvements. · Updated help book. · Framework: Clients can specify a minimum pixel motion threshold for "updated" touches. · Framework: Clients can specify the thread they want the delegate to be called on.

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