Method and device for transmitting and receiving image sequences between a server and client

A method of transmitting a plurality of images in a sequence of digital images between a server device that includes a microprocessor and a client device connected by a communication network, the plurality of images being coded according to a format allowing access to a plurality of spatial sub-parts, the image transmitting method comprising steps of:

• receiving a follow request specifying a spatial area to be followed belonging to an image in the sequence of digital images, the image having been previously received by the client device, the follow request including a predefined field specifying at least an index of the image in the sequence of digital images to which the spatial area to be followed belongs, the spatial area to be followed being positioned at any spatial position of the image;
• determining a following image in the sequence of digital images to be sent to the client device;
• determining a position of a spatial area in the following image corresponding to the spatial area to be followed specified by the follow request, according to an estimated movement in the sequence of digital images;
• and
• sending to the client device information specifying the determined position of the spatial area in the following image and at least some image data of the spatial area in the following image,
• wherein at least one of the above steps is performed, at least in part, by the microprocessor.