Visual data transmission system, display system and operating method thereof

According to one aspect, a computer-implemented method of operating a visual data transmission system is provided. The method comprises processing (901) a three-dimensional (3D) image sequence of the subject in order to generate first 2D image data representing a first two-dimensional (2D) image sequence of the subject, where the 2D image is an image of the subject in a 2D image plane passing through the 3D image, and an amount of data representing the first 2D image data is less than an amount of data representing the 3D image, the first 2D image data is generated according to the 3D image; sending (903) the first 2D image data to a display system for displaying the first 2D image sequence of the subject through the display system; receiving (905) a 2D image plane adjustment indication from the display system, wherein the 2D image plane adjustment indication indicates a desired rotation and/or translation of the 2D image plane; processing (907) the 3D image sequence and/or another 3D image sequence in order