[IGSTK-Users] Wish feature for better user interaction

[Patrick Cheng]

Hi Fucang,

We are glad that IGSTK helped and thank you for your feature requests.

I will go ahead and add your request to the IGSTK WishList on the wiki
for the future enhancement of the toolkit:
http://public.kitware.com/IGSTKWIKI/index.php/IGSTK_WishList

Now I can answer some of your requests:

1. Agree, there should be a way to indicate which tracker tool is missing.

2. We deliberately encapsulate the vtkRenderWindow functions for safety
concern. But this does cause some inconveniences. We can either have
some reset view position functions to bring back the initial view  or we
can limit the user interactions to some extend. The later one maybe more
safer and reasonable. For instance, the surgeon can not view the image
out of the range of a surgical room size of block centered at the image.

3. W/L is supported by the view class, but it not a good idea to have it
hookup with the drag interaction after discussion among developers. We
should use a slider bar on the GUI to adjust the W/L.

4. Agree, I am working on using different pickers right now, wish keep
you posted on the latest development.

Thank you,

Patrick


Fucang Jia wrote:
> Hi, everyone,
>  
> IGSTK is a very greatful toolkit for its powerful and steady function.
> Here I list several features that I will IGSTK have so that the user
> , clinical surgeons, can use IGSTK much easier.
>  
> 1. igstkTracker class may have a const member function to indicate
> the status tracking tool and/or reference tool. When I use Vicra or
> Aurora tracker, and attach both tracking tool and reference tool, if
> either the tool is occluded or not in the view frustum, the tracker
> can not return the position and orientation. User often can not figure
> out which tool can not be tracked. Especially during landmark registration,
> a indication public member function can be used to access tool status,
> if return TRUE, it is to say that the tool is OK, if return FALSE, it is
> to say that the tool need be adjusted to be in tracking status. I used
> tool->GetUpdated() to get the status of tools.
>  
> 2. igstkView class may have more function to set initial camera position
> such as SetFocalPoint, SetViewUp, SetPosition, SetViewAngle, etc. User
> can setup these value via GUI scrollbar, editbox etc. When user press and
> drag middle mouse key mistakely that the image object not seen in the scene,
> GUI parameters can be used to reset the default view parameters.
>  
> 3. Image window/level support via API function or left mouse drag. For
> example, if user drag left mouse key in the horizontal direction, the
> window changes, if user drag left mouse key in the perpendicular direction,
> the level changes, or user can set window / level value via API function
> by GUI controls.
>  
> 4. Picking 3D fiducial point or entry point on the surface. User may want
> to label more fiducials on patient's head surface. More points can cause
> the difficulty of identifying point correspondence in three orthogonal 
> planes.
> While surface can offer more intuition to user to identify them. For CT 
> image
> dataset, an isosurface can be extracted and the fiducials can be displayed
> very clearly. User can firstly pick the fiducials from surface,  the 
> fiducials'
> world coordinates can be used to synchronize the three orthogonal plane. 
> Then
> user can fine tune the fiducials position in the three orthogonal plane 
> to get
> more precise position. Picking point from 3D surface can made the landmark
> registration easy when there are more fiducials.
>  
> I do not know whether or not it is appropriate way to put the feature on 
> the
> toolkit level or on the Application level, but such features can make 
> user using
> IGSTK better.
>  
> Thank you very much!
>  
> Fucang
>  
>  
>  
>  
>  
>  
> 
> 
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