Abstract: A method for accessing a region of an encoded image comprising a plurality of segments that are encoded and put in order of encoding. The method includes the following steps applied to encoded segments and by going through the segments in the opposite direction to their order: comparing the position of the current encoded segment with the region of the image to be accessed, and according to the result of the comparison, deciding as to the decoding of the current encoded segment.

Abstract: A method of encoding a digital image signal comprising a plurality of samples. The method comprises the following steps, applied during the encoding of each sample with a view to its storage in a buffer. The level of occupancy of the buffer is determined, and the level of occupancy is compared with a predetermined threshold. An encoding mode is determined from among a plurality of encoding modes when the level of occupancy is above the predetermined threshold, and encoding the sample according to the determined encoding mode, and the sample is encoded according to a default encoding mode when the level of occupancy is below the predetermined threshold.

Abstract: The invention relates to a method of obtaining a stereoscopic signal from a sequence of monoscopic images. The method firstly comprises a step (S10) of obtaining a sequence of monoscopic images having been captured by an image acquisition apparatus in an acquisition mode enabling several images to be shot in the course of a regular movement substantially tangential to the plane of the lens of the acquisiton apparatus. That step is followed by a step (S31) of forming pairs of images from the sequence of images, each pair being formed on the basis of a predetermined temporal distance then a step of calibrating (S32) the images of the pairs formed, so as to improve the visual correspondence between the two images; Finally, a stereoscopic signal is constructed (S33) from the pairs so calibrated. FIG. 3.