![]() Add or remove Color control points, as required.If required, you can split merged control points by right-clicking and then choosing Split in the pop-up menu.If required, you can merge split control points by right-clicking and then choosing Merge in the pop-up menu, as shown below.Drag the control point or enter the required values in the Alpha edit box to modify its position and or associated opacity.Modify the position and/or opacity associated with the Alpha control points, as required.To remove an Alpha control point, hold down Left Shift and then click the Alpha control point.To add an Alpha control point, hold down Left Ctrl and then click inside the histogram window.Add or remove Alpha control points, as required.Click the More button in the Lookup table (LUT) box on the Window Leveling panel and then choose Sample Alpha as Piecewise in the drop-down menu if you had selected any other Opacity Mapping mode.Choose Piecewise as the Opacity Mapping mode.Note In general, you should edit the LUT that produces the best initial results. Choose the LUT you want to edit in Lookup table (LUT) drop-down menu on the Window Leveling panel or in Color/LUT box on the Data Properties and Settings panel.You should note that you cannot delete any of the default LUTs. Save LUT As… Lets you save a new version of the selected LUT for the current user or for all users (see Saving LUTs).ĭelete… LUT Lets you delete a custom LUT. Revert to Saved LUT… Resets the LUT back to its last-saved settings. Import LUT Settings… Lets you import and apply the settings of another LUT to the current LUT. This option will not be available if the current window leveling mode is ‘Piecewise’. Sample Alpha as Piecewise… Automatically adds alpha control points to the current window leveling mode as per the current alpha distribution. ![]() For example, an initial value of 0.70 will become 0.30 when it is flipped. #Look up table lut fullThe More button provides access to the following options:ĭistribute Color Control Points Equally… Automatically distributes the color control points equally - either between the data range, if ‘Map to full range’ is selected as the LUT mapping mode, or within the window, if ‘Map to Window’ is selected as the LUT mapping mode.įlip Color Control Points Position (Horizontal Flip)… Automatically flips the position of the color control points horizontally.Įdit Discrete LUT… Opens the Discrete LUT Editor dialog, in which you modify the colors of a discrete LUT (see Editing Discrete LUTs).ĭistribute Alpha Control Points Equally… Automatically distributes the alpha control points equally - either between the data range, if ‘Map to full range’ is selected as the LUT mapping mode, or within the window, if ‘Map to Window’ is selected as the LUT mapping mode.įlip Alpha Control Points Position (Horizontal Flip)… Automatically flips the position of the alpha control points horizontally.įlip Alpha Control Points Value (Vertical Flip)… Automatically flips the value of the alpha control points. ![]() The controls in the Lookup table (LUT) box let you choose a LUT to apply to the selected data, as well as access options for distributing color points, flipping the position of the control points, converting the alpha values to piecewise, importing LUT settings, as well as resetting and saving LUTs. You can choose a color for a control point in the dialog, as well as choose to split a control point and then pick colors for the lower and higher values. The normalized position of the control point within the selected window, its physical position (the value to which it corresponds), as well as the control point’s color or colors, are indicated in the Selected control point box.ĭouble-click a Color control point or click the color swatch to open the Color Control Point Editor dialog, shown below. The normalized position of the control point within the selected window, its physical position (the value to which it corresponds), as well as the control point’s alpha value, are indicated in the Selected control point box.ĭisplays the shades or colors of the selected LUT.ĭetermines the shade or color applied to a region. LUT Editor propertiesĪvailable whenever Opacity mapping is set to 'Piecewise', determines the opacity - from transparent to fully opaque - of a region. However, by modifying the slope of the transfer function and subsequent screen mapping, LUT image intensity values may be selectively increased or decreased to enhance the resulting image. If each image intensity value is mapped to its corresponding screen value then the LUT is a linear function and can be graphed as a 45° straight line. ![]() The transfer function determines what screen values correspond to image pixel intensity values (or scalar values) at all coordinates in the image. In order to see an image on your computer monitor, the image pixel values must be mapped, one-to-one, to screen pixel values via a Lookup table or LUT. ![]()
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |