Patent ID: 9706968
Date: 2017-07-18
CPC Classifications: A61B,G06T

Claim:
1. A method for processing a digital image comprising pixels with intensities relating to different energy levels, the method comprising the steps of: receiving first image data and second image data of the digital image, the first image data encoding a first energy level and the second image data encoding a second energy level; determining a regression model from the first image data and the second image data, the regression model establishing a correlation between intensities of pixels of the first image data with intensities of pixels of the second image data; and calculating residual mode image data from the first image data and the second image data, such that a pixel of the residual mode image data has an intensity based on the difference of an intensity of the second image data at the pixel and a correlated intensity of the pixel of the first image data, the correlated intensity being determined by applying the regression model to the intensity of pixel of the first image data.