Abstract:
L'invention permet de réduire la capacité de mémoire requise par un compresseur/filtre (300, 302) numérique unidimensionnel et/ou un filtre d'interpolation/extension (400, 402) utilisé pour le filtrage spatial de cette dimension d'une image bidimensionnelle balayée, orthogonalement aux lignes de balayage du canevas. Ces dispositifs de filtrage sont particulièrement utiles pour des systèmes de traitement d'images à pyramide de Burt.
Abstract:
The invention reduces storage capacity required by one dimensional digital filter/decimator (300, 302) and/or expander/interpolation filter (400, 402) used for spatially filtering that given dimension of a scanned two-dimensional image, orthogonal to raster scan lines. Such filter devices are particularly suitable for use in Burt Pyramid image processing systems.
Abstract:
PURPOSE: To efficiently and accurately obtain a complex signal by inserting a delay and forming information samples, simultaneously generated in each adder when signals, having time deviation in a signal group is transmitted thereby composing the composite signal in real time. CONSTITUTION: 1st input terminals of relay means 100-2 to 100-n are connected to the 1st output terminals of relay means 100-1 to (n-1) respectively. Then, sampling frequency clocks CL1 to CLn are applied to other input terminals, and other input terminals are corrected by correcting parts 345 to 349, via delays 340 to 344 and connected to adders ADD 359 to 363, respectively. For example, when a thirdly generated signal and a fourthly generated signal are combined and transmitted, it causes time deviation. Then, the 3rd signal precedented generated is delayed for a prescribed time by the delay 342 to form an information sample practically simultaneously generated in the adder 359. Thus, since the composite signal is composed only by a realtime processing, a complex signal is obtained. efficiently and accurately.
Abstract:
PURPOSE: To efficiently and accurately obtain a complex signal by inserting a delay and forming information samples, simultaneously generated in each adder when signals, having time deviation in a signal group is transmitted thereby composing the composite signal in real time. CONSTITUTION: 1st input terminals of relay means 100-2 to 100-n are connected to the 1st output terminals of relay means 100-1 to (n-1) respectively. Then, sampling frequency clocks CL1 to CLn are applied to other input terminals, and other input terminals are corrected by correcting parts 345 to 349, via delays 340 to 344 and connected to adders ADD 359 to 363, respectively. For example, when a thirdly generated signal and a fourthly generated signal are combined and transmitted, it causes time deviation. Then, the 3rd signal precedented generated is delayed for a prescribed time by the delay 342 to form an information sample practically simultaneously generated in the adder 359. Thus, since the composite signal is composed only by a realtime processing, a complex signal is obtained. efficiently and accurately.
Abstract:
PURPOSE: To efficiently and accurately obtain a complex signal by inserting a delay and forming information samples, simultaneously generated in each adder when signals, having time deviation in a signal group is transmitted thereby composing the composite signal in real time. CONSTITUTION: 1st input terminals of relay means 100-2 to 100-n are connected to the 1st output terminals of relay means 100-1 to (n-1) respectively. Then, sampling frequency clocks CL1 to CLn are applied to other input terminals, and other input terminals are corrected by correcting parts 345 to 349, via delays 340 to 344 and connected to adders ADD 359 to 363, respectively. For example, when a thirdly generated signal and a fourthly generated signal are combined and transmitted, it causes time deviation. Then, the 3rd signal precedented generated is delayed for a prescribed time by the delay 342 to form an information sample practically simultaneously generated in the adder 359. Thus, since the composite signal is composed only by a realtime processing, a complex signal is obtained. efficiently and accurately.
Abstract:
PURPOSE: To efficiently and accurately obtain a complex signal by inserting a delay and forming information samples, simultaneously generated in each adder when signals, having time deviation in a signal group is transmitted thereby composing the composite signal in real time. CONSTITUTION: 1st input terminals of relay means 100-2 to 100-n are connected to the 1st output terminals of relay means 100-1 to (n-1) respectively. Then, sampling frequency clocks CL1 to CLn are applied to other input terminals, and other input terminals are corrected by correcting parts 345 to 349, via delays 340 to 344 and connected to adders ADD 359 to 363, respectively. For example, when a thirdly generated signal and a fourthly generated signal are combined and transmitted, it causes time deviation. Then, the 3rd signal precedented generated is delayed for a prescribed time by the delay 342 to form an information sample practically simultaneously generated in the adder 359. Thus, since the composite signal is composed only by a realtime processing, a complex signal is obtained. efficiently and accurately.
Abstract:
The amount of hardware required to implement a Burt Pyramid or an FSD (filter-subtract-decimate) pyramid analyzer (or synthesizer) stage of a sampled temporal signal representing an n-dimensional information component or (such as a video signal) is substantially reduced by employing a time-synchronized multiplexed analyzer stage to derive (or a time-synchronized multiplexed synthesizer stage that is responsive to) a single serial stream of samples of a predetermined plural number of sub-spectra that are arranged in a predetermined temporal order format with respect to one another in accordance with each of a given set of time synchronized, repetitively generated, serially applied control signals.
Abstract:
The spectrum analyser has a pipeline structure with a set of N serial transfer devices for signal samples in order to analyse the frequency spectrum in delayed realtime. Each transfer device has two inputs and two outputs all connected in a specified manner to other transfer devices and clocked by specified clock signals. Each transfer device for the data component has low-pass transfer characteristics between its first input and its first output. These characteristics are chosen with a nominal cut-off frequency that is a direct function of the sampling frequency of the clock signal fed to the second input of this transfer device.
Abstract:
A pipeline structure (Figure 3) is used for one or both of the following processes: (a) for the analysing, occurring at delayed real time, of the frequency spectrum of an information component (having one or more dimensions) of a given time signal (G0), the maximum frequency of interest of which is no greater than f0 and (b) for synthesising, in delayed real time, such a temporal signal (G0) from its frequency analysis spectrum (L0...G OMEGA ). Such a pipeline structure is particularly suitable for image processing of the two-dimensional space frequencies of television images which are defined by a temporal video signal (Figure 3). … …