Abstract: The invention concerns a method and a device for correcting distortion errors in a 3D content viewed by an observer on a screen. The method comprises the step of determining a rendered roundness factor (rrf) of a pinhole model projected cylinder, estimating a rendered roundness factor table depending on the defined distance of the observer to the screen and the disparity values of objects of the image, determining for the observer a disparity transform function (TD) as a function of the estimated rendered roundness factor table and modifying the object disparity values using the disparity transform so that a perceived roundness factor of one is provided.

Abstract: The present disclosure improves 3D representation (by means of adjusting disparity between pictures) in stereoscopic or autostereoscopic images in order to better fit the natural viewing geometry by modifying each image of a stereo pair with a geometric transform centered on an intersection point of an imaging plane and a gaze direction for each of eyes. An observer's view is modeled independently for the left and right eyes, and the left and right views are processed independently with the goal to re-align pixel directions for each of eyes to make these directions more in correspondence with natural vision for the observer.

Abstract: The present disclosure improves 3D representation (by means of adjusting disparity between pictures) in stereoscopic or autostereoscopic images in order to better fit the natural viewing geometry by modifying each image of a stereo pair with a geometric transform centered on an intersection point of an imaging plane and a gaze direction for each of eyes. An observer's view is modeled independently for the left and right eyes, and the left and right views are processed independently with the goal to re-align pixel directions for each of eyes to make these directions more in correspondence with natural vision for the observer.

Abstract: The invention concerns a method and a device for correcting distortion errors in a 3D content viewed by an observer on a screen. The method comprises the step of determining a rendered roundness factor (ITO of a pinhole model projected cylinder, estimating a rendered roundness factor table depending on the defined distance of the observer to the screen and the disparity values of objects of the image, determining for the observer a disparity transform function (TD) as a function of the estimated rendered roundness factor table and modifying the object disparity values using the disparity transform so that a perceived roundness factor of one is provided.