## 2016年  9卷  第4期

2016, 9(4): 452-462. doi: 10.3788/CO.20160904.0452

2016, 9(4): 463-471. doi: 10.3788/CO.20160904.0463

2016, 9(4): 397-404. doi: 10.3788/CO.20160904.0397

2016, 9(4): 415-422. doi: 10.3788/CO.20160904.0415

2016, 9(4): 423-431. doi: 10.3788/CO.20160904.0423

2016, 9(4): 405-414. doi: 10.3788/CO.20160904.0405

2016, 9(4): 432-438. doi: 10.3788/CO.20160904.0432

2016, 9(4): 483-490. doi: 10.3788/CO.20160904.0483

2016, 9(4): 491-500. doi: 10.3788/CO.20160904.0491

2016, 9(4): 472-482. doi: 10.3788/CO.20160904.0472

2016, 9(4): 501-510. doi: 10.3788/CO.20160904.0501

2016, 9(4): 439-451. doi: 10.3788/CO.20160904.0439

We propose a numerical model for simulation of an object depth measurement by means of a shape from focus method using Laplacian operator. The core of the simulation is based on convolution of an ideal image (predicted by the geometrical optics) with polychromatic point spread functions of a generalized aperture function of lens including focus error instead of more exploited the pillbox shape or the Gaussian functions. The model allows to employ parameters of real components of the sensor based on the method, a light source spectrum, dispersion of an optical system and spectral sensitivity of a camera. The influence of dispersion of optical systems (aberration-free, achromatic and with chromatic aberration) on accuracy and reliability of the determination of the object's surface topography is presented. It is indicated that this model can increase the experiment effectively and decrease time lag with the reducing of operating expenses.