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Analysis of Measurement Errors of Depth Point Three-Dimensional Scene Digital Television Stereoscopic Systems

Keywords:

K.Ye. Rumyantsev, S.V. Kravtsov


We consider a method of theoretical description of stochastic model of errors in the measurements of depth fixed point objects in the scene of digital television stereoscopic measurer. As digital television stereoscopic measuring system is analyzed system with two collinear fixed digital cameras with identical parameters. It is shown that the error distribution in the area of measurement stereos are integral functions of the density and distribution functions of the measurement errors in the basic areas of spatial resolution. The density distribution of the errors of measurement of depth of point objects with small disparantnost values has a significant asymmetry. However, on the values of disparantnost more than 25 form of the distribution density of the measurement errors of depth of point objects is close to symmetric. Relations are obtained to estimate the standard deviation and the expectation of the measurement errors on the back of the stage point objects that are applicable for engineering calculations when designing digital television stereoscopic measuring systems. The expectation of errors of measurement of depth of point targets is positive, with growth of disparantnost its value tends to zero. The standard deviation of measurement errors of depth of point objects decreases with increasing of disparantnost. The results of comparing the density distribution of the errors of measurement of depth of point objects by stereo measurement zone with the given parameters, obtained by theoretical calculations and on empirical model.
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