98 results about "Domain imaging" patented technology

Embodiments of the invention provide a system and method for converting coordinate systems for representing image data such as for example seismic data, including accepting a first set of seismic data, mapping the first set of seismic data to a second set of seismic data, where the dimensionality of the second set of seismic data is less than the dimensionality of the first set of seismic data, and generating image data by processing the second set of seismic data.

A method and an apparatus for noninvasively and quantitatively determining spatially resolved absorption and reduced scattering coefficients over a wide field-of-view of a food object, including fruit or produce, uses spatial-frequency-domain imaging (SFDI). A single modulated imaging platform is employed. It includes a broadband light source, a digital micromirror optically coupled to the light source to control a modulated light pattern directed onto the food object at a plurality of selected spatial frequencies, a multispectral camera for taking a spectral image of a reflected modulated light pattern from the food object, a spectrally variable filter optically coupled between the food object and the multispectral camera to select a discrete number of wavelengths for image capture, and a computer coupled to the digital micromirror, camera and variable filter to enable acquisition of the reflected modulated light pattern at the selected spatial frequencies.

The invention provides an earthquake diffracted-wave separation method and device and relates to the technical field of earthquake exploration. The method comprises the steps that earthquake shot gather data carrying underground geological information in a preset geological area is obtained; single-shot preprocessing data obtained by preprocessing the earthquake shot gather data and a preset migration velocity model are input into a three-dimensional single-shot angle-domain imaging formula, wave field opposite-transmission processing is conducted on the earthquake shot gather data to obtain azimuth angles, emergence angles and amplitude information of propagation rays corresponding to underground imaging points in the preset geological area in a one-to-one mode; according to the azimuth angles, emergence angles and amplitude information of the propagation rays, a three-dimensional single-shot angle-domain imaging matrix is generated; low-rank matrix components are separated out of the three-dimensional single-shot angle-domain imaging matrix through a preset three-dimensional diffracted-wave separation model, and the low-rank matrix components are determined as earthquake diffracted waves. The integrity and waveform consistency of separated diffracted-wave amplitude are improved, and further the resolution ratio of geological structure imaging is improved.

The invention relates to methods and computer-readable medium to implement computing the propagation velocity of seismic waves in the earth. The invention computes the propagation velocity of seismic waves in the earth, which is a condition of obtaining an accurate image of subsurface geology that can be used to prospect for oil and gas deposits. In an embodiment, the method in a host of determining the propagation angles of reflected seismic waves, including inputting data representing reflected seismic waves, inputting a propagation velocity field, computing propagation direction vectors of a source wave field and a receiver wave field using a downward continuation Fourier domain shot record migration using the data representing the reflected seismic waves and the propagation velocity field, and transforming the propagation direction vectors into propagation angles of reflected seismic waves.