| 摘要 |
PURPOSE:To make the processing time of a signal fast, by obtaining the sum or average value of image signals of segments at every column of a two dimensional image sensor, making the result to be the image signal of each column, thereby handling it as an equal signal to a linear image signal. CONSTITUTION:In an image sensor 10, a column scanning pulse input 11 and a row scanning pulse input 12 are inputted, and an image signal is outputted from the sensor. The signal passes an analog switch 14 and it is integrated in an integrator 15. The switching of the analog switch 14 is controlled by a column scanning pulse signal through a monostable multivibrator 16. The integrated value is transferred through an analog switch 17. The switch 17 is driven by row scanning pulses through a monostable multivibrator 18. Since the average value of the signals of the columns is outputted, the images in right and left optical systems are compared as in a linear sensor, and the distance is obtained. Since a target can be observed with a width being provided, a large error can be prevented. |
