Abstract: A diffuser-nozzle assembly for mounting at an outlet from a compressor in a turbomachine, the assembly including a nozzle including two substantially cylindrical walls, a radially inner wall and a radially outer wall that are connected together by radial vanes. The walls of the nozzle are extended downstream beyond the radial vanes and the radial spacing therebetween varies downstream from the vanes to be at a minimum substantially in register with the vanes and at a maximum between the vanes.

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: A diffuser-nozzle assembly for mounting at an outlet from a compressor in a turbomachine, the assembly including a nozzle including two substantially cylindrical walls, a radially inner wall and a radially outer wall that are connected together by radial vanes. The walls of the nozzle are extended downstream beyond the radial vanes and the radial spacing therebetween varies downstream from the vanes to be at a minimum substantially in register with the vanes and at a maximum between the vanes.

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.