SPOT 4.1 Basic and Advanced Software Manual for SPOT Insight ...

Ch. 8 - Viewing, Editing, and Annotating Images−Changing from one monochrome bit depth to another (8 bit to 12 bit) or from one RGB bit depthto another (24 bit to 36 bit) does not require the addition of any color channeling information. Inthis case, select the new pixel bit depth and click on OK.CAUTION!If you are changing an image to either 12 bit monochrome or 36 bit RGB, you must save theimage in TIFF or JPEG 2000 format before you can close it. Refer to step four for furtherinstructions.−Changing from an RGB (24 bit or 36 bit) color image to a monochrome image (8 bit or 12 bit)requires the entry of color channeling information. When you select the new pixel bit depth, thecolor channeling information appears.Select the color channel(s) that you want to use. Select either a single color or the All Channelsoption, which is the default.♦♦If you select a single color channel, the program uses only the values for that color (in theoriginal image) when it creates the monochrome image.If you select All Channels, the program uses a mathematical algorithm to combine the red,green, and blue values from the original image when it creates the monochrome image.CAUTION!If you are changing an image to either 12 bit monochrome or 36 bit RGB, you must save the image inTIFF or JPEG2000 format before you can close it. Refer to step four for further instructions.3. Click on OK to save the image with the new pixel bit depth.4. If you changed the original pixel bit depth to either 12 bit or 36 bit, follow these steps before trying tosave the image to disk:a) From the File menu, select the Save As option. The Save As window appears. The Save as typedialog box displays TIFF Uncomp (12-bit/channel) (TIFF).b) The Save as type drop-down box has two options:♦♦♦TIFF Uncomp (12-bit/channel) (TIFF) – Select the 12 bit per channel option if you want tosave the image as 36 bpp.TIFF Uncomp (16-bit/channel) (TIFF) – Select the 16 bit per channel option if you want tosave the image as 48 bpp. This allows you to edit images with Adobe Photoshop, whichcannot read 36 bpp imagesJPEG2000 – Select for the improved JPEG2000 compression algorithm that saves file space.8. Enter the desired file name and location, and click on the Save button.User Guide to the SPOT Insight Camera 157