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<br />8 <br /> <br />III. Color Enhancement of Digital Imagery <br /> <br />A most advantageous feature of the ADVISAR for the quantitative <br /> <br />. <br />~ <br /> <br />study of cloud top temperatures is its discrete color enhancement <br /> <br />capability. Color enhanced digital imagery simultaneously reveals <br /> <br />~ <br />~ <br /> <br />both the quantitative and qualitative aspects of the image, with <br /> <br />minimal sacrifice being incurred by each. Enhancement assigns a <br /> <br />shade of color to digital values or ranges of values upon output <br /> <br />to the color monitors. In this way, colors on the image represent <br /> <br />areas of given temperatures (for infrared images) or brightness <br /> <br />(visible images). Fig. 9 is an example of a color enhanced IR image. <br /> <br />Here it is easy to pick out the cloud areas and at the same time view <br /> <br />the cloud top temperatures. While black and white enhancement can <br /> <br />achieve the same effect, the inability of the eye to discern between <br /> <br />~ <br /> <br />shades of grey makes color enhancement much easier to decode quanti- <br /> <br />tatively. <br /> <br />.~ I <br /> <br />~ <br /> <br />6 <br /> <br />~ <br />