초록 ▼

3. Automatic target following apparatus comprising A. SENSING MEANS FOR DERIVING A VIDEO SIGNAL REPRESENTING A TARGET, B. MEANS FOR STORING SIGNAL ELEMENTS FROM A FRAME OF SAID VIDEO SIGNAL, C. MEANS FOR COMPARING SIGNAL ELEMENTS FROM A SUBSEQUENT FRAME OF SAID VIDEO SIGNAL WITH THE STORED SIGNAL EL

3. Automatic target following apparatus comprising A. SENSING MEANS FOR DERIVING A VIDEO SIGNAL REPRESENTING A TARGET, B. MEANS FOR STORING SIGNAL ELEMENTS FROM A FRAME OF SAID VIDEO SIGNAL, C. MEANS FOR COMPARING SIGNAL ELEMENTS FROM A SUBSEQUENT FRAME OF SAID VIDEO SIGNAL WITH THE STORED SIGNAL ELEMENTS WITH DIFFERENT RELATIVE PHASE SHIFTS TO DETECT DEVIATION FROM A DESIRED POINT OF VIEW OF THE TARGET, D. SAID COMPARING MEANS INCLUDING MEANS FOR DERIVING A PLURALITY OF CORRELATION SIGNALS DEPENDENT ON THE CORRELATIONS OF THE SIGNAL ELEMENTS FROM SAID SUBSEQUENT FRAME AND SAID STORED SIGNAL ELEMENTS WITH DIFFERENT RELATIVE PHASE SHIFTS, E. MEANS FOR DERIVING A GUIDANCE SIGNAL FOR THE APPARATUS RESPONSIVE TO THE LARGEST OF SAID CORRELATION SIGNALS, F. MEANS FOR DETECTING A DECLINE IN THE CORRELATION OF SIGNAL ELEMENTS FROM SAID SUBSEQUENT FRAME WITH SAID STORED SIGNAL ELEMENTS, AND G. MEANS FOR UPDATING SAID STORED SIGNAL ELEMENTS WHEN THE DECLINE EXCEEDS A PRE-ARRANGED LIMIT, THEREBY TO ALLOW FOR CHANGES IN THE RELATIVE SIZE OF THE TARGET WITH APPROACH OF THE APPARATUS THERETO.

대표청구항 ▼

Automatic target following apparatus comprising a. sensing means for deriving a video signal representing a target, b. means for storing signal elements from a frame of said video signal, c. means for comparing signal elements from a subsequent frame of said video signal with the stored signal eleme

Automatic target following apparatus comprising a. sensing means for deriving a video signal representing a target, b. means for storing signal elements from a frame of said video signal, c. means for comparing signal elements from a subsequent frame of said video signal with the stored signal elements with different relative phase shifts to detect deviation from a desired point of view of the target, d. said comparing means including means for deriving a plurality of correlation signals dependent on the correlations of the signal elements from said subsequent frame and said stored signal elements with different relative phase shifts, e. means for deriving a guidance signal for the apparatus responsive to the largest of said correlation signals, f. means for detecting a decline in the correlation of signal elements from said subsequent frame with said stored signal elements, and g. means for updating said stored signal elements when the decline exceeds a pre-arranged limit, thereby to allow for changes in the relative size of the target with approach of the appartus thereto.