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Updated: Jun 20, 2026

High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques
Published on: December 3, 2013
White-light stereoprojection through Fourier spectrum polarization
Abstract:
Theory and experiments of a new stereoprojection technique that uses a white-light optical image-processing system are described. The stereoprojection can be accomplished in two steps: (1) spatial encoding of stereoscopically coupled images and (2) spatial polarization filtering at the Fourier plane in a white-light optical image processor. Compared with existing stereoprojection methods, the present technique requires only one projector and a single piece of encoded film; therefore it is much simpler and more economical to use for practival applications.
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In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...

