METHOD OF CALCULATING SHIFT IN DISPLACEMENT SENSOR WITH HIGH RESOLUTION CAPACITY Russian patent published in 2008 - IPC G06F17/15 G06K9/70 

FIELD: navigation techniques.

SUBSTANCE: when forming an image of a surface, on which a sensor is moving, components of the image with spatial wavelength less than twice the size of the optical cell are destroyed, before calculation of shift between the reference and the current frames on the discrete set of numbers Arefij and Acurij, stored in the first and second memory buffers. Initial continuous functions Aref(x,y), Acur(x,y) are restored, and then the shift between the frames is calculated by comparing the restored continuous functions.

EFFECT: increased accuracy and resolution capacity of calculating shift.

2 cl, 10 dwg