A method is provided for use in a stereoscopic image generating system comprising two cameras, a plurality of memory buffers, and at least one processor. The method comprises: identifying at least one common region of interest (ROI) at images obtained from the two cameras; generating a Look Up table (LUT), for holding displacement values of pixels that belong to the at least one common ROI; forwarding data associated with images obtained from the two cameras that relates to the at least one common ROI, to the plurality of memory buffers; processing output lines retrieved from the plurality of memory buffers and propagating data that relates to a YUV image and associated LUTs, wherein the propagating of the data is carried out at a rate associated with a respective memory buffer from which that data is retrieved; and generating a stereoscopic image based on the propagated data.