Method and image processor unit for processing image data

An image processor unit for processing raw image data provided by an image sensor, said image sensor comprising a matrix of light sensitive elements and a plurality of lens elements and/or filter elements arranged in a pixel matrix in front of a finer sub-pixel matrix of light sensitive elements, wherein a group of light sensitive elements are placed behind a common lens element and/or a common filter element to provide sub-pixel values for a respective position in the pixel matrix, and wherein said raw image data comprising a matrix of pixel values for the pixel matrix captured by the matrix of light sensitive elements, said matrix of pixel values being divided in a set of views, each view comprising a matrix of sub-pixel values comprising a view specific sub-pixel of the sub-pixel matrix for each position in the matrix, which is related to a respective lens element and/or filter element, wherein the image processor unit is configured to:

• determine, for each captured view of the image, of first variations of sub-pixel values in the respective view separately from other views of the same image;
• determine second variations of sub-pixel values related to the same position in the pixel matrix behind a respective lens element and/or filter element in a set of views of the same image;
• and
• process the image data for the image by use of the determined first and second variations.