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Comment: Updated for 9.0 - info added about LUT Mappings menu and extra LUT adjustment points
Channel display is one of the four sections in Display settings

Channel Settings is one (1) of the four (4) Display Settings sections. This section lets you adjust the appearance of each channel on the currently - displayed image. The adjustments applied here only changes change how the image is shown in the image panel Image Viewer and will do not change the underlying data on the image.


Interface

The channel display settings is found in the Display settings panel in Aivia Channel Settings panel is at the very toptop of the column to the right of the Image Viewer by default. The Channel Settings table header contains controls that applies apply to the whole image whereas , and each table row contains controls that applies apply to just that the corresponding channel. An example of the channel display settings Channel Settings table is shown below:.

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Panel

On this page:

Table of Contents
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Table header

The table header contains descriptions labels for each column on the display table as well as global display options on for the image. The three (3) buttons in the table header are the following:

NameIconDescription
Toggle all channel displayShow/Hide All Channels

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This option toggles Toggles the display visibility of all channels on the image; clicking on the icon will hide or show all channels
Auto-fit LUT

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This option toggles Toggles auto-fitting of the lookup table (LUT (lookup table) function to the actual dynamic range on of the image and updates the range for each frame
Toggle volume shadingVolume Shading

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This option applies Applies shading to the displayed volume in 3D view View when Composite rendering Volume mode is selected


Table row

Each table row in the channel display settings Channel Settings table represents a single channel on the displayed image. The background color of each row corresponds to the specified channel color on in the Color column of the table. Each row can be controlled independently to adjust the display settings of each channel. There are five (5) controls:

NameIconDescription
Show expanded Expanded LUT

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This option expands the lookup table (LUT) Expands the LUT display of the selected channel
Show/hide channelHide Channel

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This option allows Allows you to show or hide the selected channel from view
LUT adjustment controlsAdjustment Controls

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This option allows Allows you to specify the display displayed dynamic range of the selected channel; there are two sliders , which that can be dragged along the entire table row:

  • Left The left slider controls the minimum intensity value; pixels with intensity intensities less than this specified value are treated as shown with the minimum brightness.
  • Right The right slider controls the maximum intensity value; pixels with intensity intensities greater than this specified value are treated as shown with the maximum brightness.
Color pickerPicker

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This option lets you specify the displayed color of the selected channel. When clicked, you will be presented with Opens a color picker that lets you select a desired display color for the selected channel
Render mode selectorMode Selector

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This option lets Lets you specify the rendering mode of the selected channel in 3D view. When clicked, you will be presented with the available rendering optionsView





Using the

channel display settings

Channel Settings panel

The Channel display settings will be Settings are active whenever you have an image loaded and displayed in Aivia. The software automatically populates the table based on the number of channels that are on the image and the channel color(s).

Set

display

channel visibility

Each channel Channels can be set to show or hide separately by clicking on the Toggle Visibility icon to shown and hidden individually with the Show/Hide Channel icons to the left of its nametheir names. The Show/Hide Channel icon has two states:

Display StateIconDescription
Shown

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The selected item is visible; click on the icon to hide selected hide the selected item.
Hidden

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The selected item is not visible; click on the icon to show selected show the selected item.

Additionally, you can show or /hide all channels by clicking on the Toggle channels visibility icon on Show/Hide All Channels icon in the table header.




Change render mode

You can specify the rendering mode for channels in 3D view View by clicking on the icon associated with the selected item in the View column. Clicking on the icon will bring up a list of render mode options that are available for the selected item. There are three (3) options:

Rendering ModeIconDescription
Maximum projectionProjection

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Sets rendering to Maximum intensity projection Intensity Projection mode
Composite volumeVolume
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Sets rendering to Composite volume Volume mode
Preview surfaceSurface

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Sets rendering to Preview surface Surface mode


Once a new rendering mode is selected, the displayed image will refresh refreshes automatically to reflect the new selection.

Info

Depending on your hardware, the size of the image and the rendering mode chosen, it may take Aivia up to several minutes to fully render the display image with the specified settings.


A comparison between the three rendering mode displays are (3) rendering modes is shown below:.

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Maximum
projection
ProjectionComposite
volume
VolumePreview
surface
Surface



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Render mode options










Change channel color

You can change the channel color display by clicking on the icon (or colored rectangle) associated with the selected channel in the Color column. Clicking on the icon will bring brings up a color picker menu, which allows you to specify a different color. 

The basic color picker Basic Color Picker (see right) is the default mode where you will be presented color picker, which presents a number of standard colors to choose from.

When you click on the Advanced button on the basic color pickerBasic Color Picker, the Advanced color picker Color Picker will be shown (see right). Click or drag the slider on the right to specify the desired hue (color) and click anywhere on the main display to specify the saturation and brightness desired. Alternately, you can also specify a color by entering the hexadecimal color code in the textbox below the main display.Additionally, you can apply a preset pseudo-color palette on the displayed image channel through the expanded Lookup table (LUT) controls. Information on how to apply pseudo-color palettes to the image can be found in the LUT page

Additional LUT mapping and color options are available in the Advanced Coloring menu, which is found in the right-click menu of each channel-name cell in the Channel Settings table. The Advanced Coloring > LUT Mappings menu contains a variety of LUT mappings that you may choose from.


Basic channel color pickerColor Picker












Advanced channel color pickerColor Picker



Change display brightness

For channels, you You can adjust the displayed brightness of the display channels using the lookup table (LUT) function built into the channel display settings. The lookup table Channel Settings. An LUT control is circled in red to the right. It is located in the channel display settings with one There is one (1) pair of controls for each channel. When you hover over the a control, the cursor changes into a left-right arrow, and you can click and drag the cursor control to the left or right to modify the displayed dynamic range. This action will does not alter the pixel/voxel values on the imagesimage, merely the brightness of the displayed image.

You can also set the LUT to update automatically by clicking on the Auto-fit LUT  icon Image Modified icon. When toggled on, the brightness of the displayed image will be is determined by the dynamic range (minimum pixel intensity to maximum pixel intensity) at of the current frame.



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Lookup table control


Show expanded LUT

You can open the advanced controls by clicking click on the Expand  Expand icon Image Modified icon on  on the far left side of each a table row to show the additional settings that are available for the selected channel. When expanded, you will see one of the two following options expanded LUT or ISO level, depending on the selected rendering mode selected:.


Expanded LUT

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You will see the expanded LUT if you have either the Maximum projection Projection or Composite volume Volume rendering mode selected. An intensity histogram is shown indicating the frequency of a given each intensity occurringlevel.

The expanded LUT mode gives you more finer control to specify over the minimum and maximum dynamic range value as well as the option to apply a pseudo-color palette to the displayed channelvalues. You can double-click on the dotted line to add another LUT Adjustment Point, which can be clicked and dragged for tuning of the LUT.


ISO level

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The ISO level display is shown when you have the Preview surface Surface rendering mode selected. The ISO Level slider sliders and textbox lets textboxes let you specify the minimum and maximum intensity levels respectively for mesh generation. This is the main control for adjusting the display when Preview surface is activein Preview Surface mode.



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