Depth camera noise model

Abstract

Abstract The present invention provides a method for generating a noise model for a depth camera, the method including, in one or more processing devices: acquiring data from the depth camera, the data being captured by performing measurements of a reference surface at multiple different known depths, wherein for each known depth, data are captured at multiple different known surface angles; analysing the data captured at each known depth at each known surface angle to calculate measurement errors indicative of variations in depth measurements; and, calculating a noise model by fitting the measurement errors to at least one function representing relationships between measurement errors and, measurement depths and surface angles, as a combination of bivariate exponential and bivariate polynomial functions, wherein the noise model is usable in analysing depth measurements performed using the depth camera. Abstract 20 26 20 07 22 30 J an 2 02 6 A b s t r a c t 2 0 2 6 2 0 0 7 2 2 3 0 J a n 2 0 2 6 5 / 20 Fig. 5A 500 505 510 515 520 Select next calibration configuration Optionally control imaging parameters 525 Orientate reference surface Position depth camera Acquire image data Yes Configurations complete? No 530530 5 / 20 500 505 510 No 515 525 530 20 26 20 07 22 30 J an 2 02 6 2 0 2 6 2 0 0 7 2 2 3 0 J a n 2 0 2 6 5 1 0 N o 5 1 5 5 2 0 5 3 0

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