Pattern discrimination system using television

Claim 2

A pattern discrimination method for automatic and rapid detection of occurrences of an abnormal condition in a plurality of patterns under surveillance comprising the steps of producing a number of horizontal gate pulses and vertical gate pulses of any width and position as required by utilizing the television art, forming in the field of view of a monitor one or more sample surfaces variable in position, size and shape thereof by sampling by using said horizontal gate pulses and vertical gate pulses, converting optical images of the patterns under surveillance into electric signals by means of at least one television camera, producing and storing separately in a plurality of memories a plurAlity of sets of integrated values of voltages of video signal components corresponding to said one or more sample surfaces of the patterns under surveillance, and producing further plurality of sets of integrated values of voltages of video signal components corresponding to said one or more sample surfaces of the patterns under surveillance and comparing said further plurality of sets of integrated values of voltages with the plurality of sets of integrated values of voltages stored separately in the memories.

Claim 3

A pattern discriminating apparatus for automatic detection of occurrences of an abnormal condition in a pattern under surveillance, comprising: generating means for generating horizontal and vertical gate pulses; sampling means for sequentially sampling first and second portions of a video signal corresponding to a predetermined portion of the field of view of a television camera with said horizontal and vertical gate pulses; integrating means for integrating the sampled video signal portions; converting means for converting the integrated video signal portions into first and second series of corresponding digital pulses; digital memory means for storing said first series of digital pulses therein; comparing means for comparing said stored digital pulses with said second series of digital pulses; indicator signal means for producing a signal when said stored series of pulses and said second series of pulses compared in said comparing means differ by a predetermined amount; a plurality of AND gates, each having one input connected to an output of said sampling means; a gate pulse generator connected to a second input of each of said AND gates, said gate pulse generator generating a plurality of pairs of vertical and horizontal gate pulses, one pair of gate pulses being supplied to a corresponding one of said AND gates through said second input thereof; means applying outputs of said AND gates sequentially to said integrating means; means applying outputs of said integrating means in a corresponding sequence to a corresponding plurality of digital memory means and comparing means; and means applying outputs of said plurality of comparing means to said indicator signal means.

Claim 4

A pattern discriminating apparatus for automatic detection of occurrences of an abnormal condition in a pattern under surveillance, comprising: generating means for generating horizontal and vertical gate pulses; sampling means for sequentially sampling first and second portions of a video signal corresponding to a predetermined portion of the field of view of a television camera with said horizontal and vertical gate pulses; integrating means for integrating the sampled video signal portions; converting means for converting the integrated video signal portions into first and second series of corresponding digital pulses; digital memory means for storing said first series of digital pulses therein; comparing means for comparing said stored digital pulses with said second series of digital pulses; indicator signal means for producing a signal when said stored series of pulses and said second series of pulses compared in said comparing means differ by a predetermined amount; a plurality of AND gates, each having one input connected to an output of said sampling means; a gate pulse generator connected to a second input of each of said AND gates, said gate pulse generator generating a plurality of pairs of vertical and horizontal gate pulses, one pair of gate pulses being supplied to a corresponding one of said AND gates through said second input thereof; means applying outputs of said AND gates sequentially to said integrating means; means applying outputs of said integrating means in a corresponding sequence to a corresponding plurality of digital memory means and comparing means; and means applying outputs of said plurality of comparing means to said indicator signal means.