Basic Manipulation

VoTracer I/O Basic Manip. Visualization Segmentation Refinement Top

Modes (Vis / Segm / Ref)

VoTracer has 5 Visualization modes， 6 Segmentation modes, 2 Refinement modes.
You can switch the mode from Menu > Mode Switch > * ．

Vis.1) Vis Intensity
Vis.2) Vis Intensity Grad
Vis.3) Vis 2D Transfer Function
Vis.4) Vis Mask
Vis.5) Vis Organ Cross Section (only for 横浜市大)
　　　　
Segm.1) Segmentation Slice By Slice
Segm.2) Segmentation Region Growing
Segm.3) Segmentation Graph Cut
Segm.4) Segmentation Curved Cylinder
Segm.5) Segmentation Contour Mesh (B-HRBF)
Segm.6) Segmentation Contour Mesh (only for がんセンター用)

Refine.1) Refinement Slice by Slice
Refine.2) Refinement Contours

Window Layout

VoTracer contains Main Window, SubPaneXY/YZ/ZX, Rendering Dialog, and Manipulation Dialog.

Main Window

Main window renders the loaded volumetric image and its cross sections．
Main task such as segmentation is performed in this window.

Sub Pane XY / YZ / ZX

These panes provide 2D visualization of cross sections．
These are available only for visualization mode (and slice-by-slice segmentation mode)．
You can switch the panes visible/invisible by the buttons on tool bar (as follows).

Rendering Dialog

This dialog is for manipulating rendering parameters．

Mode specific Dialog (操作用ダイアログ)

This dialog is for manipulating parameters for specific task (such as segmentation)．
Different dialogs appears depending on the modes (visualizations / segmentations / refinements)．

Main Window

L-dragging : camera translation
R-dragging : camera rotation
M-dragging : camera zooming

Wheeling 　:
Move xy/yz/zx planes under the cursor

Ctrl + L-dragging :
generate curved cross section
Ctrl + L-clicking (tapping) :
remove cross section

Sub Panes

L-dragging : camera translation
R-dragging : camera zooming
M-dragging : camera zooming

Wheeling : move cross section

control lines (red/green/blue) can be moved by L-dragging.

Rendering Parameter DLG

Rendering Parameter DLG supports switching rendering parameters.

CheckBox-Frame : cubic frame visualization On/Off.
CheckBox-Interpolate : Trilinear interpolation On/off.
CheckBox-Parallel proj : Orthogonal/perspective projections.
CheckBox-原点 : show origin in the 3D space.

Button - Window Level : Show Window Level dialog.

Slider - Transparency : Global transparency of volume Rendering
Slider - Slice : The number of billboards for volume Rendering
(the grater, the better rendering quality and slower feedback.)
(VoTracer renders many transparent billbard for volume rendering)

Slider - back color : background color (grayscale)

Button - XY-plane : On / Off the XY plane
Button - YZ-plane : On / Off the YZ plane
Button - ZX-plane : On / Off the ZX plane

Pitch (mm)

You can modify the voxel pitches in the x/y/z-axis.
三次元画像のPitch (1画素のサイズ)を指定できます．

Planes - RGB / Intens / Gradient

RGB : show RGB-color image (1,2,3-channel を RGB にマップします).
Intens : show intensity grayscale image (輝度値画像を表示します).
Gradient : show gradient magnitude image (微分画像を表示します).

Volume - RGB / Intens / Gradient

RGB : show RGB volume (1,2,3- channel をRGBにマップします).
Intens : show intensity grayscale volume (輝度値画像をレンダリングします).
c1, c2, c3 : apply pseudo color volume rendering (疑似カラーでレンダリングします)．

Transfer Function Panel (伝達関数)

modify the transparency of volume Rendering．
See visualization mode for detail.

Save / Load Current Camera Info

Menu > others > save camera pos (.vtcam )
You can save the current camera information (camera position), and load it later. camera information is saved in *.vtcam file.

.vtcam file can be loaded from Menu > others > load camera and transfunc
or by drag-and-drop *.vtcam file to VoTracer.

.vtcam is a simple text file that contains 3-three dimensional vectors『camera position』『position the camera look at』『camera Y-axis direction』.
You can directly edit the file。

example of .vtcam file format.
5.069925 3.494983 7.336879 　　//Camera position
5.000000 5.000000 1.533203 　　//position the camera look at
0.650566 0.737002 0.183282 　　//Y-direction of the camera