Fast Shape-From-Focus method for 3D object reconstruction

Shape-From-Focus method (SFF method) is a method for recovering depth from an image series which are taken with different focus settings. For method presented in this paper, the series must be taken with an optical device (optical microscope, CCD or classic camera) with very small depth of focus, different images must be focussed to different planes and may be taken with inconsiderable angle of view. Proposed method is capable to registered images with different scaling, it makes possible to construct full sharpened 2D image and also the 3D model of scanned object. Accuracy of the method is tested by comparing with 3D models obtained by confocal microscope in hardware supported confocal mode.