An image processing method

An image processing method operable in an image processing system comprising an image capturing device and a processor, the method comprising the processor:

• acquiring from the image capturing device, successive sets of component images of a scene, each image within a set having a different exposure than each other component image of the set;
• generating a high dynamic range, HDR, image from an associated set of component images;
• performing a spectral analysis of said generated HDR image to determine whether the HDR image comprises spectral components indicative of a lighting of the scene by a modulated light source;
• analysing meta-data associated with a set of component images to determine a difference between meta-data for one component image of the set and meta-data for at least one other component image of the set, any difference being indicative of an artefact caused by illumination of said scene by a modulated light source;
• and
• combining a result of said spectral analysis and said meta-data analysis to provide an indication that illumination of said scene by a modulated light source is causing a visible artefact in at least one of said HDR images;
• and responsive to such an indication, changing a HDR operating mode of the image processing system.