Patent ID: 7639843

Claim:
A system programmed to execute a method for presenting a legend for interpreting a composite image generated by the system, the composite image comprising a first portion displayed with values from a qualitative scale of values that is calibrated to a quantitative scale of values, and a second portion displayed with visible light, and the method comprising: displaying a first zone of the legend such that the first zone spans a first quantitative range within the quantitative scale of values and has a qualitative range of values from the qualitative scale of values, the qualitative range corresponding to the first quantitative range, and the first zone corresponding to the first portion of the image; and displaying a second zone of the legend such that the second zone spans a second quantitative range within the quantitative scale of values and is transparent, the second zone corresponding to the second portion of the image; wherein the composite image and the legend are displayed on a graphical user interface of the system, the legend being overlaid upon the image; and a part of the image that is overlaid by the second zone is visible.