Abstract: A process comprises a step (2) of creating histograms of an image representing the occurrences of the luminance values as a function of these values. A further step compares (5) a histogram of an image T(t) with a histogram of a previous image T(t−1), and is characterized in that the step of comparing (5) consists of calculating, for an occurrence histo13 lum (n,t) corresponding to a luminance value n in the image T(t), the absolute differences between this occurrence and the occurrences histo_lum (n+k, t−1) of the previous image, where K is a natural integer and varies from −K to +K. The process is further characterized by choosing the minimum value Min_Diff (n, t) from among these differences, and is characterized further by in summing (6) the minimum values for the set of luminance values of the histogram, and comparing (7) the sum obtained with a threshold.

Abstract: The invention concerns a device for generating mutual photometric effects. The invention concerns also a server for delivering photometric parameters for generating mutual photometric effects and a system including such a device and such a server.

Abstract: The process is characterized in that it performs:

Abstract: The present invention relates to an elementary cell of a linear filter for image processing, as well as to a corresponding module, element and process. The cell (1) comprises a data circulation output (3) and a calculation output (4), as well as a main delay line (5) and an auxiliary delay line (6) in parallel. Delay line selection means (MUX4) make it possible to link the input (2) of the cell to the circulation output by way of one or other of the delay lines. The cell also comprises an adder (7) having two inputs (21, 22) which can be linked respectively to the input of the cell and to the output of the main delay line, by calculation selection means (MUX1, MUX2) and a multiplier (8) at the output of the adder (7), connected to a multiplier coefficients memory (9). Application to linear filtering for image processing and to random access for motion compensation.

Abstract: The method includes a stage of calculating a stability parameter Det_Stab(t) for the field, on the basis of a comparison (4), over two successive images, of the number of occurrences of the majority vectors of the movement-vectors fields of each of these images, a field being defined as stable if the variation in the number of occurrences lies within a predefined bracket, and a stage of deciding on reliability (7) on the basis of this stability parameter.

Abstract: The invention relates to a method of preprocessing a video image sequence consisting of a succession of interlaced frames for estimating motion between a first and a second frame, characterized in that a temporal filtering is performed on the basis of at least two input frames so as to deliver each of the two frames utilized by the motion estimator. The applications relate to motion estimators, in the field of video image compression or the conversion of television standards.

Abstract: The process comprising a step (2) of creating histograms of an image representing the occurrences of the luminance values as a function of these values, a step of comparing (5) a histogram of an image T(t) with a histogram of a previous image T(t−1), is characterized in that the step of comparing (5) consists:

Abstract: A reinforced flexible pipe includes an impermeable hose and a reinforcement tube composed of an interlacement of flat rovings wound helically about the axis of the hose. Each flat roving is constructed of a plurality of filaments, such as wires. The interlacement of the coaxial reinforcement tube includes metal tapes helically wound about the axis of the hose and interlaced with the flat rovings.