| 摘要 |
PURPOSE:To measure the shape of solid body of an objective accurately, by overlapping video signals obtained from the scanning of two TV cameras having respectively a different direction of horizontal scanning and using the position on the scanning line where the characteristics of both the signals are coincident as parallax. CONSTITUTION:Video signals of an objective from TV cameras 2 and 3 opposite in the direction of horizontal scanning are given to differentiation circuits 12 and 13, binary circuits 30 and 31, and an AND circuit 32, and only when the peak value of the both the signals is coincident, a signal is given to an AND circuit 24 via a delay circuit 33. On the ther hand, signals of the cameras 3 and 2 via a delay circuit 17 are inputted to an OR circuit 23 via a comparator 18, and a binary circuit 22, and similarly a signal from a comparator 16 is inputted to the circuit 23 and when the luminance signal is the same, a signal is given to the circuit 24. A differentiation signal passed again through differentiation circuit 34 and 35 is given to a comparator 36 and a start signal of a profile line is given to the circuit 24. When the input of the AND circuit 24 is simultaneous, the shape of solid body of the objective can be obtained with a computer 28 via a binary counter 26. |
