Method for the automatic or semiautomatic distance measurement and focusing of the image of an object onto a focal plane

摘要

In the exemplary embodiments, two line-shaped images of a scene are imaged onto two line sensors. The output signals of these line sensors are stored in successive stages of respective shift registers, whereby the distance measurement ensues by means of sequential examination of the correlation of the image element signals as stored by the shift registers. For the correlation examination, a predetermined set of stages of each shift register are read out in parallel for comparison. The image element signals are then alternately shifted in the respective shift registers followed by further parallel readout and comparison steps to locate the segments of the two line sensors having a maximum correlation.