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

Ch. 8 – Viewing, Editing, and Annotating Images−−−Hue – This the actual color, as distinguished from others in the color spectrum. Hue is derivedfrom a color wheel and is expressed in the color's angular location (e.g., 0 to 360 degrees).Saturation - The proportion of perceived pure hue in the color. Saturation (in the SPOT software)is measured on a numerical scale of 0 to 100, where zero equals pure gray and 100 equals pure hue(i.e., “day glow”).Original Color – A sample “swatch” of the color that you selected. The cross hairs on the colorwheel indicate the relative position of the color.5. The Modify Main Image box is checked as a default.6. Set the new color. This can be done in one of two ways, depending on whether the image shouldcontain white:− If you are trying to make the selected pixel in your image appear as white (or gray if the pixelis darker), click on the Make White/Gray button.− If you are working with an image that does not have any white, modify the Hue andSaturation values so that the New Color “swatch” shows up as the color that you want. Youcan do this either by entering specific Hue and Saturation values, or dragging the cross-hairson the color wheel to the desired location.At this point there are three options:• Click on OK to save the image with the new color rendition.• Click on Reset to return the image to the original color rendition.• For images that have not yet been saved and closed, click on Set WhiteBalance to set the values so that colors are rendered correctly for futureimage captures. When you click on Set White Balance, a dialog boxdisplays the white balance values. As a default, the values are saved tothe current setup. If desired, you can select a different Setup and thenclick on OK.7. If you reset the White Balance, you can now recapture the image with the new settings.Customizing ImagesIn addition to the image editing features described in this chapter, the SPOT software offers several optionsfor customizing images.• Change Pixel Bit Depth – Change from one bit depth to any of the other three options without havingto recapture an image.• Subtract Image – Subtract an image from a selected open image.• Merge Images –Merge two or three images, assigning red, green, or blue to each image. The MergeImages feature is mainly used to combine two or three monochrome images into an artificially coloredcomposite image.Change Pixel Bit DepthUse Change Pixel Bit Depth to change the bit depth of the currentlyopen image. To change the pixel bit depth for an image, follow thesesteps:1. From the Edit menu, select the Change Pixel Bit Depth option.The Change Pixel Bit Depth window displays the current PixelBit Depth for image.2. Select the pixel bit depth that you want to change the image to.156 User Guide to the SPOT Insight Camera