BLACKBODY RADIATION The diagram below was created using a FORTRAN program (linked below) that computes the red, green and blue color coefficients for hot objects. The program uses the CIE color matching functions and Planck's distribution function for the spectral radiance of a blackbody.

CHROMATICITY DIAGRAM The CIE XYZ chromaticity diagram below was created using a FORTRAN program or Basic code (linked below) that computes the red, green and blue color coefficients for each coordinate (x,y). For another approach, see the UNIX cietoppm utility which is a NETPBM extension.

EYE SENSITIVITY The three white curves to the right indicate the sensitivity level for the three types of cones. The black curve indicates the sensitivity of the rods. The peak response moves from 550 nm to 500 nm at night.[1].

CODE EXAMPLES