IGSTK Architecture Overview Luis Ibez Kitware Inc The

IGSTK Architecture Overview Luis Ibáñez Kitware, Inc

The Toolkit in a Nutshell Open Source Toolkit BSD-like License Written in C++ Based on ITK and VTK Designed for a Critical Application

Layer Architecture IGS - APPLICATION GUI: FLTK / Qt / MFC IGSTK ITK VNL GDCM VTK Threads, XML, … Open. GL

Main Categories of Components Geometry & Representation Infrastructure Trackers Images & Readers Viewers

Infrastructure State Machine Time Stamp Pulse Generator Events Transforms Logger

Trackers Tracker (base class) – Polaris. Tracker – Aurora. Tracker Support – Serial. Communication. For. Windows Serial. Communication. For. Posix – NDICommand. Interpreter

Object Representation Spatial. Object – – – – – Ellipsoid Cylinder Images Mesh Tube. Group Box ? Cone ? Spatial. Object. Representation – Ellipsoid – Cylinder – Images – Mesh – Tube – Box ? – Cone ? – Vascular. Network SO ? ? – Airways. Network SO ? ? – Surgical Tools ? ?

Viewers View – View 2 D – View 3 D VTK Based GUI / VTK hybrid class

Images and Readers Image – CTImage – MRImage – Fluoroscopic. Image Readers (DICOM) – CTImage. Reader – MRImage. Reader – Fluoroscopy (video input)

Dynamics Architecture

General Interactions Tracker GUI View 1 View 2 Object Representation View 3 Object Representation View 4 Object Representation Tracker. Tool 1 Tracker. Tool 2 Tracker. Tool 3 Spatial Object

Tracking Interactions T T Object Representation T Tracker. Tool 3 Tick Spatial Object T = Transform Event

Event Class ITK Event IGSTK Event Transform. Event Time. Stamp. Event String. Event

Event Class

Transform Class Transform Vector Versor Time. Stamp Error

Transform Class

Transform Event Class

Pulse Generator Action How not to miss pulses ?

Tick Timing Control Tick Tracker GUI View 1 View 2 View 3 View 4 Object Representation Tracker. Tool 1 Tracker. Tool 2 Tracker. Tool 3 Spatial Object

Quality Control

Testing Platforms Windows – Visual Studio 6. 0 – Visual Studio 7. 1 Linux – gcc 3. 2 – gcc 3. 3 – gcc 3. 4 Cygwin – Windows – gcc 3. 4 – gcc 3. 3

Testing Goal – 100 % Code Coverage – 100 % State Machine Transitions Testing Current Code Coverage – IGSTK 93. 6 % – Sandbox 92. 4 % ( untested 321 / 4714 lines ) ( untested 4 / 49 lines )

Dynamic Testing Platforms Valgrind on Linux – gcc 3. 3 – gcc 3. 4 Valgrind on Cygwin ( setup pending ) Purify (too expensive)

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