Three-dimensional measurement technology has recently been used for various applications such as human modeling, cultural properties recording, machine inspection of industrial parts, and robot vision. The light-section method and coded structured light projection method are well-known active measurement methods that can accurately obtain three-dimensional shapes by projecting light patterns on...

High resolution and noncontacted measurement tools for the dynamic characterization of micro devices are necessary to develop high performance/precision and reliable microelectromechanical systems (MEMS). In this paper, a three-dimensional dynamic measurement system based on stroboscopic and interferometric methods is presented. This system can capture bright-fielded and interferometric images ...

OBJECTIVE To evaluate the reliability of 3-dimensional ultrasound (3D-US) for the measurement of choroidal melanomas. DESIGN Retrospective case series. PARTICIPANTS Forty-two consecutive cases of choroidal melanoma imaged with 3D-US. METHODS Tumor measurements obtained with ophthalmoscopy, transillumination, standard ultrasound techniques, 3D-US, and pathological studies. Tumor diameters,...

The direct measurement of a complex wave function has been recently realized by using weak values. In this Letter, we introduce a method that exploits sparsity for the compressive measurement of the transverse spatial wave function of photons. The procedure involves weak measurements of random projection operators in the spatial domain followed by postselection in the momentum basis. Using this...

A new approach to the measurement of three-dimensional movement of particles is introduced. A single TV camera with an apparatus to rotate the image enables us to record the three-dimensional movement of particles as spiral streaks on a single image. Every shape of the spiral streak on the image plane is related to the position and the velocity of the individual particle. The information about ...