Prediction of an image by compensation during forward movement

摘要

A method is provided for predicting an image by compensation during forward movement from at least one reference image. For at least one block of a reference image, referred to as a reference block, the prediction method includes the following steps: determining at least one piece of movement information, representing a movement between said reference block and a matching block in the image to be predicted; determining at least one enlarged block, including the reference block and at least one point of a block adjacent to said reference block in the reference image; and determining a prediction value for at least one point of the image to be predicted from the at least one enlarged block and from the movement information determined for the reference block.

主权项

1. A method comprising:
generating with a coding device a signal representing a sequence of images, comprising by predicting an image by forward motion compensation from at least one reference image, wherein, for at least one block of a reference image, called a reference block, said predicting comprises the following steps:
determining at least one piece of shift information, representing a shift between the reference block and a corresponding block in the image to be predicted;determining at least one enlarged block, comprising said reference block and at least one point of a block adjacent to said reference block in said reference image; anddetermining a value of prediction for at least one point of the image to be predicted, from at least one enlarged block and from the piece or pieces of shift information determined for said reference block,wherein the signal comprises at least one piece of information representing the use of at least one enlarged block and/or of the enlargement assigned to the enlarged block for a given reference block; and transmitting said signal by the coding device.