METHOD AND SYSTEM FOR TRANSFORMING A DIGITAL IMAGE FROM A LOW DYNAMIC RANGE (LDR) IMAGE TO A HIGH DYNAMIC RANGE (HDR) IMAGE

摘要

The invention provides a method for transforming an image from a Low Dynamic Range (LDR) image obtained with a given camera to a High Dynamic Range (HDR) image, the method comprising: - obtaining the exposure -pixel response curve (21) for said given camera - converting the LDR image to HSB color space arrays (22), said HSB color space arrays including a Hue array, a Saturation array and a Brigthness array; and - determining a Radiance array (23, 24) by inverse mapping each pixel in said Brightness array using the inverse of the exposure -pixel response curve (f-1).