1. A method for analyzing related images, comprising the steps of: obtaining at least a first and a second image; defining a pixel patch in the first image for which a correlation with a pixel patch at a patch target position in the second image shall be calculated; calculating matching cost values between each pixel of the pixel patch in the first image and its corresponding pixels in each of a plurality of pixel patches in the second image, wherein the plurality of pixel patches in the second image differ in position in the second image and comprise the pixel patch at the patch target position; selecting the matching cost values of the corresponding pixels of any of the plurality of pixel patches in the second image which match best; aggregating the matching cost values of the corresponding pixels of all of the plurality of pixel patches in the second image which match best to generate an aggregation window associated with the patch target position, wherein the aggregation window comprises the best matching pixels from any of the plurality of pixel patches in the second image having multiple disparities at a pixel level, wherein a position of at least one of the pixels in the pixel patch in relation to another one of the pixels in the first image is located in a different position than the at least one of the pixels in the pixel patch in relation to the another one of the pixels in the second image; and producing a signal including information on the patch target position.