2013 Summer Project Week:Parameter heirarchy
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Key Investigators
- Queen's: Adam Rankin
- Queen's: Andras Lasso
- Queen's: Tamas Ungi
Objective
The goal is to develop a module that creates and utilizes a new hierarchy based on definable parameters. This will allow us to characterize data by time.
Approach, Plan
- Review existing time hierarchy discussion
- Learn technical details about hierarchies
- Discuss architecture of a flexible, abstract parameter hierarchy
- Implement said hierarchy
Progress
- Discussed approach to be taken, concerns regarding performance
- Node count can explode into the thousands, performance analysis needed
- Initial test performance analysis run, results concerning
- Create hierarchies with 1500 and 7000 nodes, observed
- Create hierarchy with 250 * 5 (1 volume, 4 transforms per frame) nodes
- Slider in widget tied to logic to replace current view volume contents with the contents of the frame indexed by slider value
- Deep copy used
- Allocate nodes, add to scene ~25 seconds
- Able to drag slider, occasional stuttering
- i7-2640M, 6GB RAM, 2nd gen SSD
- Run1_250
- Run2_250
- Run3_500
- 1000 nodes still going... maxed out physical memory [Run4_1000]
- Slider in widget tied to logic to replace current view volume contents with the contents of the frame indexed by slider value
- Initial test performance analysis run, results concerning
To do:
- Implement importer/exporter for MHA
- Discuss approach to performance, currently performance features are optional
Delivery Mechanism
This work will be delivered to the NA-MIC Kit as a Slicer module in the SlicerIGT extension.