ENVI 5: Saturation stretch and HSV/Brovey sharpening not available for display data

In previous versions of ENVI, and in the classic ENVI interface for ENVI 5, if you choose to calculate a Saturation Stretch, HSV Sharpening, or Color Normalized (Brovey) Sharpening by selecting the appropriate item from the Transform menu, ENVI will bring up a small dialog that asks you whether you want to select the color input data from an existing display, or from the Available Bands List.  If you choose to select the input from a display, then the transform is applied to the display values, which are already rescaled from the original values in the file, and range between 0 and 255. 



In the new ENVI 5 interface, the Saturation Stretch tool is still available from the Transform section of the Toolbox.  HSV and Color Normalized (Brovey) Sharpening are available from the Image Sharpening section of the Toolbox. In the new interface, these tools do not provide the option to use the already rescaled/stretched display data as input.  Instead, you will need to specify the original data from an open file as input.  These data may not already be scaled to be between 0 and 255.  The Saturation Stretch, HSV Sharpening, and Color Normalized (Brovey) Sharpening are most appropriate for data that are byte scaled (to be between 0 and 255).  Therefore, you will probably want to rescale the data into the byte data range (0 to 255), using the Stretch Data tool, which you will find in the Raster Management section of the Toolbox.  Once the data have been rescaled to be in the byte data range, you can choose those rescaled bands as input to the Saturation Stretch, HSV Sharpening, or Color Normalized (Brovey) Sharpening.