3 results about "Spectral mapping" patented technology

This invention relates to the field of automated laser chip heating processing control technology, and in particular to a laser heating rework system. The system includes a spectral mapping module that obtains wavelength drift data by analyzing transient photoluminescence spectra collected by a fluorescence thermometer, and uses this data to identify the coordinates of poorly heated locations to generate a transient thermal state matrix. A tensor calculation module combines the microscopic orientation data of the material's crystal lattice structure to calculate the thermal conductivity coefficient and generate a thermal conductivity tensor matrix. A polarization synthesis module retrieves photon absorption cross-section difference parameters to inversely deduce a physical compensation array and generate a spatial polarization phase map. A polarization modulation device generates a non-uniform vector polarized light field based on this map, driving a laser output device to inject the light field into the coordinates of the poorly heated location to perform targeted heat injection. This invention utilizes the difference in physical absorption rate of photons with different polarization states in the underlying crystal lattice arrangement to correct local thermal distribution anomalies while achieving zero thermal damage overflow in the surrounding area, thus improving the overall processing yield.

This application discloses a panoramic spectral reconstruction imaging method, comprising: lowering a device with coaxially integrated specific optical components into a borehole; illuminating the borehole wall with a light source; collecting the reflected light panoramically using a conical reflector; encoding the light spectrally through an array of annular gradient filters; and receiving the light with a detector; based on a pre-calibrated spatial-spectral mapping model, processing the detector image to simultaneously reconstruct a panoramic unfolded image and a narrowband image of the borehole wall, thereby generating a spectral image cube containing spatial and spectral information; this invention enables the one-time, in-situ acquisition of a panoramic image of the borehole wall and the continuous spectral curves of each point thereon within the borehole, achieving spectral collaborative perception of rock morphology and mineral composition.

The present application belongs to the technical field of three-dimensional reconstruction, and particularly relates to a multi-view hyperspectral three-dimensional reconstruction and spectral mapping method. The present application establishes a unified geometric reference through explicit three-dimensional reconstruction, establishes a strict projection relationship between a space point and a hyperspectral pixel based on camera internal and external parameters, selects a target view angle in combination with a normal vector geometric constraint, and finally realizes accurate, stable and physically credible mapping of hyperspectral data on a three-dimensional point cloud through nearest surface point discrimination and voxel grid constraint screening of target pixel points. The present application can strengthen the constraint relationship between a space point and a real surface position, inhibit mixed pixel interference and same-pixel multi-depth ambiguity, and further ensure the physical authenticity of the spectral mapping result.