Abstract: Creating a sub-titles stream or file composed of sub-titles elements. For each sub-titles element in said sub-titles elements, a sub-titles element is inserted into the sub-titles stream or file, at least one end-of-block condition related to a mode of presentation of sub-titles is verified, and a datum representative of an end of a block according to the mode of presentation of sub-titles is inserted into the sub-titles stream or file upon satisfying said at least one end-of-block condition. A sub-titles stream or file may be presented on a terminal of a user by selecting on the terminal a mode of presentation of sub-titles, reading a sub-titles block associated with the mode of presentation in the stream or file, and presenting on the terminal the at least one sub-titles block according to the mode of presentation.

Abstract: Applying a presentation timestamp to an element of a sequence of sub-titles. A minimum presentation timestamp TMIN of an element of a sequence of sub-titles N is initialized. The presentation timestamp T(N) of the new element of a sub-title sequence N is compared with the minimum presentation timestamp for sub-titles TMIN. The minimum presentation timestamp for sub-titles TMIN is applied to the element of a sequence of sub-titles N if the presentation timestamp T(N) of the new sub-titles element is prior to the minimum presentation timestamp for sub-titles TMIN. The minimum presentation timestamp for sub-titles TMIN for an element of a sequence of sub-titles N+1 is calculated as a timestamp posterior to the presentation timestamp T(N) of the new sub-titles element.

Abstract: Applying a presentation timestamp to an element of a sequence of sub-titles. A minimum presentation timestamp TMIN of an element of a sequence of sub-titles N is initialized. The presentation timestamp T(N) of the new element of a sub-title sequence N is compared with the minimum presentation timestamp for sub-titles TMIN. The minimum presentation timestamp for sub-titles TMIN is applied to the element of a sequence of sub-titles N if the presentation timestamp T(N) of the new sub-titles element is prior to the minimum presentation timestamp for sub-titles TMIN. The minimum presentation timestamp for sub-titles TMIN for an element of a sequence of sub-titles N+1 is calculated as a timestamp posterior to the presentation timestamp T(N) of the new sub-titles element.

Abstract: Applying a presentation timestamp to an element of a sequence of sub-titles. A minimum presentation timestamp TMIN of an element of a sequence of sub-titles N is initialized. The presentation timestamp T(N) of the new element of a sub-title sequence N is compared with the minimum presentation timestamp for sub-titles TMIN. The minimum presentation timestamp for sub-titles TMIN is applied to the element of a sequence of sub-titles N if the presentation timestamp T(N) of the new sub-titles element is prior to the minimum presentation timestamp for sub-titles TMIN. The minimum presentation timestamp for sub-titles TMIN for an element of a sequence of sub-titles N+1 is calculated as a timestamp posterior to the presentation timestamp T(N) of the new sub-titles element.

Abstract: Applying a presentation timestamp to an element of a sequence of sub-titles. A minimum presentation timestamp TMIN of an element of a sequence of sub-titles N is initialized. The presentation timestamp T(N) of the new element of a sub-title sequence N is compared with the minimum presentation timestamp for sub-titles TMIN. The minimum presentation timestamp for sub-titles TMIN is applied to the element of a sequence of sub-titles N if the presentation timestamp T(N) of the new sub-titles element is prior to the minimum presentation timestamp for sub-titles TMIN. The minimum presentation timestamp for sub-titles TMIN for an element of a sequence of sub-titles N+1 is calculated as a timestamp posterior to the presentation timestamp T(N) of the new sub-titles element.

Abstract: Creating a sub-titles stream or file composed of sub-titles elements. For each sub-titles element in said sub-titles elements, a sub-titles element is inserted into the sub-titles stream or file, at least one end-of-block condition related to a mode of presentation of sub-titles is verified, and a datum representative of an end of a block according to the mode of presentation of sub-titles is inserted into the sub-titles stream or file upon satisfying said at least one end-of-block condition. A sub-titles stream or file may be presented on a terminal of a user by selecting on the terminal a mode of presentation of sub-titles, reading a sub-titles block associated with the mode of presentation in the stream or file, and presenting on the terminal the at least one sub-titles block according to the mode of presentation.

Abstract: In order to detect a fade in a sequence of images, a luminance level is calculated for each of the images of a window (termed a detection window) that is N consecutive images in length, and for the image preceding the detection window. A difference of luminance level between the luminance level of the current image and the luminance level of the image preceding the current image is calculated. This is done for each of the N images of the detection window. The presence of a fade for the detection window is deduced if, for at least k images of the detection window, the difference of luminance level is greater than a predefined threshold, with 2<=k<=N.

Abstract: The invention relates to a method for detecting a fade in a sequence of images which comprises the following steps: calculating, for each of the images of a window N consecutive images in length, termed the detection window, and for the image preceding the detection window, a luminance level on the basis of the luminance values associated with each of the pixels of each of the images; calculating, for each of the N images of the detection window, a difference of luminance level between the luminance level of the current image and the luminance level of the image preceding the current image; and deducing therefrom the presence of a fade for the detection window if, for at least k images of the detection window, said difference of luminance level is greater that a predefined threshold, with 2?k?N.

Abstract: The invention relates to a method for detecting a fade in a sequence of images which comprises the following steps: calculating, for each of the images of a window N consecutive images in length, termed the detection window, and for the image preceding the detection window, a luminance level on the basis of the luminance values associated with each of the pixels of each of the images; calculating, for each of the N images of the detection window, a difference of luminance level between the luminance level of the current image and the luminance level of the image preceding the current image; and deducing therefrom the presence of a fade for the detection window if, for at least k images of the detection window, said difference of luminance level is greater that a predefined threshold, with 2?k?N.

Abstract: An image output by a camera can contain a fault such that the signal output by the camera is not constant for a uniform background. To correct this fault, the method involves memorizing, as a correction image, a destructured image of the scene to be observed; this destructured image is generated by calculating the means of the signals obtained when the selected scene is observed while the camera settings are simultaneously modified inconsistently; the correction image is then subtracted from the image formed by the signals output by the detector during real observation of the scene selected with correct camera settings. Application to all scanning cameras.