IMAGE STABILISATION DEVICE Russian patent published in 2014 - IPC H04N5/232 

FIELD: physics.

SUBSTANCE: method is carried out using, in a displacement metre, a correlator which performs the function of determining the variance of signal increments based on squaring difference values of correlated signals from linear photodetectors in digital form, and an interpolator is made in form of a unit which performs interpolation using the formula: $$\hat{\chi }={\Delta }_m\left(D_{-1}-D_1\right)/\left[2\left(D_{-1}-2D_0+D_1\right)\right],$$ where D_-1, D₁, D₀ denote signal variances, $$\hat{\chi }$$ is displacement, Δ_m is the pixel size of the auxiliary photodetector.

EFFECT: reduced image displacement measurement error.

4 dwg