1. A method of transitioning between an image of a first video sequence and an image of a second video sequence, wherein images of the one of the video sequences correspond to at least one sub-region of respective images of the other video sequence, the method comprising receiving at least one image of the first video sequence; providing, from the at least one image, at least one pre-transition image; for each at least one pre-transition image: determining a confidence region within the at least one pre-transition image based on a set of confidence values, each confidence value representing, for a respective block of the at least one pre-transition image, the level of reliability of determining one or more blocks of a corresponding image in the second video sequence from the respective block; computing a transition image corresponding to the second video sequence, the transition image being a function of the determined confidence region of the pre-transition image; and displaying the transition image.