Patent ID: 7544944

Claim:
A method of displaying together IR image data spanning a first temperature range and visible light image data corresponding to the same field of view in the same image, the method comprising: (a) determining a second temperature range corresponding to the range of temperatures in the IR image data to be displayed in a first portion of the image, wherein the IR image data in the first portion of the image is a subset of the IR image data for the entire image, and the second temperature range is a subset of the first temperature range; (b) assigning colours from a colouring scheme to temperatures in the second temperature range, wherein the colouring scheme has a first number of colours, a second number of colours are assigned to the second temperature range, and the second number of colours represents a larger proportion of the first number of colours as compared to the second temperature range's proportion of the first temperature range; and (c) displaying IR image data in at least the first portion of the image and visible light image data in at least a second portion of the image, wherein the temperatures in the first portion of the image are displayed according to the colour assignments in (b), thereby improving the resolution of the display of the IR image data in the first portion of the image.