1.A method for coding at least one current image parameter (Pu), characterized in that, relative to a zone (Bi) of a current image (IQ), it implements the following:
- as a function of the value of at least one parameter of an image
zone which precedes said zone of the current image, selection (C3a; C3b) of a
least two predetermined coding methods (MCx, MCy),
parameter using the selected coding method.
2. The coding method as claimed in claim 1, wherein, N possible values being associated with said at least one current image parameter, such as N>2, the predetermined coding method which is selected matches K code words
coding methods,

- code the value of said at least one current image parameter using the selected coding method.
5„ A computer program comprising program code instructions for executing the steps of the coding method as claimed in any one of claims 1 to 3, when said program is run on a computer
program comprising program code instructions for executing the steps of the coding method as claimed in any one of claims 1 to 3, when said program is run by a computer.
7. A method for decoding at least one current image parameter (Pu), characterized in that, relative to a zone (Bi) of a current image (IQ), it implements the following:
image parameter, such as Q