Patent ID: 7212669
Filing Date: 2007-05-01
Classification: G06T

Abstract:
1. An automatic visual perception device for an even occurring in a space with respect to at least one digitized parameter, comprising at least two histogram calculation units for the treatment of the at least one parameter a control unit, a data bus, a time coincidences bus carrying at least a time coincidences signal, the histogram calculation unit being configured to form a histogram representative of the parameter in function of a validation signal and to determine by classification a binary classification signal resulting from the comparison of the parameter and a selection criterion C, wherein the classification signal is sent to the time coincidences bus, and wherein the validation signal is produced from time coincidences signals from the time coincidence bus so that the calculation of the histogram depends on the classification signals carried by the time coincidence bus, and wherein the histogram calculation units process data a an analysis memory including a memory with addresses, each address associated with possible values of the number of n bits of the signal DATA(A) and whose writing process is controlled by a WRITE signal; a classifier comprising a memory intended for receiving a selection criterion C of the parameter DATA(A), said classifier receiving the signal DATA(A) at the input and outputting a binary output signal whereof the value depends on the result of the comparison of the signal DATA (A) with the selection criterion C, a time coincidences unit that receives signals from the time coincidence bus, said time coincidences unit outputs a positive global enabling signal when the time coincidences signals are valid, a test unit, an analysis output unit, an address multiplexer, an incrementation enabling unit wherein the counter of each address in the memory corresponds to the value (d) of a the test unit intended for calculating and storing statistical data processes, after receiving the data a wherein the memory is deleted before the beginning of each frame for a space at an instant (T) by an initialization signal “INIT”, and wherein: the memory of the classifier is an addressable memory enabling real time updating of the selection criterion (C) and having a data input DATA IN, an address command ADDRESS and a writing command WR, receiving on its input the output from the analysis memory and a signal END on its writing command, the histogram processing units further comprise a data input multiplexer with two inputs and one output, receiving on one of its inputs a counting signal COUNTER and on its other input, the succession of data a