摘要:
A device for the presentation of documents, which includes a back element (3; 13; 17) and a frame (2) capable of surrounding the back element (3; 13; 17). The latter includes one or more fixing elements (9; 10), each comprising a part (20) capable of deforming elastically. When the device (1) is in the closed state, each of the elements applies a clamping force to the frame (2), causing the document (8) to be clamped.
摘要:
The disclosure relates to a device and to a method for noise reduction of a video signal. The device is comprised of the following components. A motion-compensated interpolation means, a recursive filter intended to receive the output of the recursive filter motion-compensated by the interpolation means at a first input, and the video signal at a second input; means for calculating the difference between the video signal and the output of the recursive filter motion-compensated by the interpolation means; wherein the device includes means for providing the first input of the recursive filter either with the video signal if the difference is greater than a predetermined noise level threshold, or the motion-compensated output of the recursive filter, if the difference is less than the said predetermined noise level threshold.
摘要:
The disclosure relates to a device and a method for estimating the noise level of a video signal representing image sequences. The device comprises a movement compensated interpolation means, a recursive filter designed to receive on a first input the output of the recursive filter movement compensated by the movement compensated interpolation means and on a second input the video signal, means of calculating the difference between the video signal and the output of the recursive filter movement compensated by the movement compensated interpolation means. In accordance with the principles of the invention, the device comprises means of estimating the noise level of the video signal according to the difference and a maximum threshold delimiting this difference.
摘要:
The invention relates to a device and a method for coding video images by motion compensation. The device according to the invention incorporates incorporated means of coding and means of filtering. It comprises means of calculation of a recursivity coefficient as a function of an estimated noise level and of a prediction error, means of measurement of the intra-image correlation and of the inter-image correlation, means of selection of a type of coding applied to the current input image as a function at least of the measurements of the inter-image correlation and of the measurements of the intra-image correlation and as a function of the estimated noise level means of coding of the current input image as a function of the type of coding selected.
摘要:
The invention relates to a method and a device for preprocessing prior to coding of a sequence of images. the device comprises means of estimation of motion, for each pixel of the current frame, between the current pixel and the corresponding pixel of the previous frame and of the previous frame of like parity.