InteractiveRampLUT

MacroModule

genre	View2D
author	MeVis Medical Solutions AG
package	MeVisLab/Standard
definition	viewers.def
see also	SoView2D, View2DExtensions, RampLUT, SoMouseGrabber
keywords	ramp, lut, interactive, mouse

Purpose

This module combines a RampLUT module with mouse interaction (performed with SoMouseGrabber) to achieve a interactively modifiable ramp LUT.

Usage

Add this module to your Inventor scene before the object the LUT should be applied to. If required adapt the mouse button configuration.

Windows

Default Panel

Input Fields

input0

name: input0, type: Image

Connect the image which provides the minimum and maximum values of the image to display (so the correct LUT values can be selected).

Output Fields

nodeOut

name: nodeOut, type: SoNode

Connect this to your Inventor scene to get the interaction on the LUT and to apply the LUT in one go.

outInteraction

name: outInteraction, type: SoNode

This output provides only the interaction on the LUT, but does not apply the LUT.

outBaseLUT

name: outBaseLUT, type: LUTFunction(MLBase)

The current LUT as a separate Base object.

Parameter Fields

Field Index

alphaCenterRescaled: Double	centerRescaled: Double	Shift: Enum
alphaFactor: Double	colorFactor: Color	startColor: Color
alphaWidthRescaled: Double	Compute LUT Anew: Trigger	Synchronize Gray and Alpha: Bool
Alt: Enum	Compute LUT on each image change: Bool	Use Managed Interaction: Bool
Apply: Bool	Control: Enum	Use relative LUT if no input image: Bool
Button1: Enum	Enable: Bool	Width (width): Double
Button2: Enum	endColor: Color	Width (alphaWidth): Double
Button3: Enum	Max Value: Double	widthRescaled: Double
Center (center): Double	Min Value: Double
Center (alphaCenter): Double	Relative: Bool

Visible Fields

Apply

name: on, type: Bool, default: TRUE

Enable this flag to really apply the LUT to your image.

Compute LUT Anew

name: computeLUTAnew, type: Trigger

If pressed, the LUT is computed anew on base of the input image’s DICOM tags.

The DICOM tags used to compute the LUT are: WindowCenter, WindowWidth, SlopeIntercept, and SlopeRescale.

Relative

name: relative, type: Bool, default: TRUE

If checked, the generated LUT is relative, i.e. the index value interval [0..1] is rescaled to the true image value range before applying the LUT. If the LUT is absolute, on the other hand, the image values are used as index values directly, without rescaling.

Synchronize Gray and Alpha

name: alphaSync, type: Bool, default: TRUE

If checked, the values for the alpha value ramp always follow the values for the gray value ramp.

Min Value

name: imageMinValue, type: Double, persistent: no

Shows the input image’s minimum value (or 0 if no image is attached).

Max Value

name: imageMaxValue, type: Double, persistent: no

Shows the input image’s maximum value (or 1 if no image is attached).

Center (center)

name: center, type: Double, default: 0.5

Sets the center index value of the ramp, either as an absolute image value or relative to [0..1].

Width (width)

name: width, type: Double, default: 0.5

Sets the width value of the ramp, either as an absolute image value range or relative to [0..1].

Center (alphaCenter)

name: alphaCenter, type: Double, default: 0.5

Sets the center index value of the ramp, either as an absolute image value or relative to [0..1].

Width (alphaWidth)

name: alphaWidth, type: Double, default: 0.5

Sets the width value of the ramp, either as an absolute image value range or relative to [0..1].

Enable

name: mouseOn, type: Bool, default: TRUE

Enable this to allow to interactively change the ramp lut by dragging the mouse.

Button1

name: mouseButton1, type: Enum, default: IGNORED

Defines if mouse button 1 (left mouse button) must be pressed for dragging.

Values:

Title	Name
Pressed	PRESSED
Released	RELEASED
Ignored	IGNORED

Button2

name: mouseButton2, type: Enum, default: IGNORED

Defines if mouse button 2 (middle mouse button) must be pressed for dragging.

Values:

Title	Name
Pressed	PRESSED
Released	RELEASED
Ignored	IGNORED

Button3

name: mouseButton3, type: Enum, default: PRESSED

Defines if mouse button 3 (right mouse button) must be pressed for dragging.

Values:

Title	Name
Pressed	PRESSED
Released	RELEASED
Ignored	IGNORED

Shift

name: mouseShift, type: Enum, default: RELEASED

Defines if the Shift key must be pressed for dragging.

Values:

Title	Name
Pressed	PRESSED
Released	RELEASED
Ignored	IGNORED

Control

name: mouseCtrl, type: Enum, default: RELEASED

Defines if the Control key must be pressed for dragging.

Values:

Title	Name
Pressed	PRESSED
Released	RELEASED
Ignored	IGNORED

Alt

name: mouseAlt, type: Enum, default: RELEASED

Defines if the Alt key must be pressed for dragging.

Values:

Title	Name
Pressed	PRESSED
Released	RELEASED
Ignored	IGNORED

Compute LUT on each image change

name: shouldComputeLUTOnEachImageChange, type: Bool, default: FALSE

If checked, the module computes a default LUT on each update of the input image.

Use relative LUT if no input image

name: useRelativeIfNoInputImage, type: Bool, default: TRUE

If checked, the module uses a relative LUT in [0..1] if no input image is attached.

If there was an input image attached and the module used an absolute LUT and the image is detached while this flag is checked, the module uses the same LUT as before just in relative bounds.

Use Managed Interaction

name: useManagedInteraction, type: Bool, default: FALSE

Use Managed Interaction for the mouse interaction. This is useful if the rest of the interaction in the scene also uses Managed Interaction, since otherwise there might overlapping interactions.

Hidden Fields

startColor

name: startColor, type: Color, default: 0 0 0

endColor

name: endColor, type: Color, default: 1 1 1

centerRescaled

name: centerRescaled, type: Double, default: 0.5, minimum: lutRescale.outputMin, maximum: lutRescale.outputMax

Center rescaled according to the DICOM tags RescaleIntercept and RescaleSlope.

widthRescaled

name: widthRescaled, type: Double, default: 0.5, minimum: lutRescale.outputRangeNeg, maximum: lutRescale.outputRange

Width rescaled according to the DICOM tags RescaleIntercept and RescaleSlope.

alphaCenterRescaled

name: alphaCenterRescaled, type: Double, default: 0.5, minimum: alphaRescale.outputMin, maximum: alphaRescale.outputMax

Center rescaled according to the DICOM tags RescaleIntercept and RescaleSlope.

alphaWidthRescaled

name: alphaWidthRescaled, type: Double, default: 0.5, minimum: alphaRescale.outputRangeNeg, maximum: alphaRescale.outputRange

Width rescaled according to the DICOM tags RescaleIntercept and RescaleSlope.

colorFactor

name: colorFactor, type: Color, default: 1 1 1

Sets a color factor applied to the LUT entry values.

alphaFactor

name: alphaFactor, type: Double, default: 1, minimum: 0, maximum: 1

Sets an alpha factor applied to the LUT entry values.