Patent ID: 6356652
Filing Date: 2002-03-12
Classification: G06T

Abstract:
A method of processing an image in a radiographic imaging system wherein an electric signal representation of said image is mapped to density values for visualization as a hard or a soft copy image characterized in that the density of low density area in a diagnostically irrelevant zone in the image is enhanced and image structure in said zone is kept visible, by converting in said diagnostically irrelevant zone of the image pixels located at position (x,y) according to a conversion function g(x,y)=a.f(x,y)+(1âˆ’a).fmax wherein f(x,y) is the signal value before conversion of a pixel located at position (x,y), a is a value between zero and one, and fmax is equal to the maximum of values f(x,y), prior to being subjected to mapping into density values.