Transfer Function Properties

The Transfer Function Properties dialog sets global default properties for transfer functions used by new image windows. The properties exposed in this dialog are the same as those in the transfer function panes except for the addition of the profile control to save and recall default parameter sets.

Open the Transfer Function Properties dialog from the View > Default Properties menu and the menu on the Image Tools toolbar. It is also opened by the [Save] button on the Transfer Function Panes.

Default Transfer Function Properties
Profile [\|>]	Selects the parameter profile for this command and allows you to save or work with existing presets.
Sample	The Sample control determines the region where the image intensity is sampled for calculating the transfer function. The options are as follows: Full Image: Samples the entire image. Cursor: Samples the region inside the Image Cursor. Cursor Live: Samples the region inside the Image Cursor and updates as the cursor moves. This slows cursor movement.
Range	The Range specifies how the intensity limits are calculated from the sample region. One of the options allows you to force the minimum and maximum to specific values.
Stretch	The Stretch provides options for extending the transfer function to higher or lower intensity. The options are as follows: Linear: Uses no Bias with equal Grayscale spacing between the transfer function's limiting values. Log: Extends the transfer function to greater contrast at lower intensity values. Gamma: Extends the transfer function to higher or lower intensity based on the gamma setting. A gamma less than 1 biases toward higher contrast in lower intensity, and vice versa.
Boost	Check this box to selectively boost the contrast using a proprietary algorithm that enhances contrast between pixel values crowded in a narrow range of value, usually near the background level. This works with intensity images but not with RGB images. This feature was added to Mira Pro x64 version 8.66.
Gamma Slider	Sets the gamma value when Gamma Stretch is selected.
Min Z	Specifies the minimum Z (intensity) value. This is active only when the Specify Z Stretch is selected.
Max Z	Specifies the maximum Z (intensity) value. This is active only when the Specify Z Stretch is selected.
Min %	Specifies the minimum percentile intensity. This is active only when the Percentile Stretch is selected.
Max %	Specifies the maximum percentile intensity. This is active only when the Percentile Stretch is selected.
Contrast	Specifies the contrast value when the Autoscale Stretch is selected.

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