30 results about "Optical reconstruction" patented technology

In certain embodiments, the invention relates to systems and methods for altering an image to compensate for variation in one or more physical and/or supervenient properties (e.g., optical absorption and/or scattering) in heterogeneous, diffuse tissue, thereby attenuating the effects of tissue waveguiding. The methods enable the proper identification of emission image regions that evidence waveguiding of electromagnetic radiation, and enables compensation of emission images for such waveguiding. The methods preserve the depth localization accuracy of the FMT approach and improve optical reconstruction in the targeted areas while eliminating spurious components of fluorescence from the acquired data set. Calibration methods for probe concentration mapping are also presented.

The invention discloses a three-dimensional image optical reconstruction method and system based on phase shift compression Fresnel holography, and belongs to the technical field of data security, andthe method comprises the steps: carrying out the encryption of a three-dimensional object through a random phase mask, and obtaining three different holograms through the three different phase shiftsof reference light; calculating the complex amplitude of the object light field from the three different holograms by using a three-step phase shift method; and reconstructing the three-dimensional object from the complex amplitude of the object light field by using a compressed Fresnel holographic method and a secret key. According to the method, firstly, a complex object light field on a CCD imaging detector plane is calculated by using a three-step phase shift method for a hologram of a three-dimensional object obtained by encryption, and then a three-dimensional image is reconstructed byusing a compressed Fresnel holographic technology and a correct secret key, so that the interference of a square field term and a direct current term is effectively avoided, and the feasibility and superiority of image reconstruction are superior to those of the traditional method.

The present invention relates to a holographic display and more particularly to an apparatus and methods for a curved electro-holographic display. The apparatus mainly comprises; at least one light source for providing lights, at least one axially symmetric mirror for reflecting the fights coming from light source, at least one spatial light modulation system consists of one or more than one spatial light modulators for modulating lights reflecting from the axially symmetric mirror and forming a desired optical reconstruction above the axially symmetric mirror by reflecting the lights which is seen from a viewing zone by the user.

The invention provides a rapid random optical reconstruction imaging system based on sparse constraint and a rapid random optical reconstruction imaging method based on sparse constraint. The system at least comprises an excitation light source module for generating polychromatic excitation light, a fiber coupling and full inner reflection module which receives the polychromatic excitation light and then forms collimating excitation light, an integration module which carries out imaging, scanning, space modulation and detection on the collimating excitation light, a time sequence motor control module which controls the excitation light source module, the fiber coupling and full inner reflection module and the integration module, and an imaging collection and analysis software package which detects collected data and carries out random reconstructed image processing and compression perception processing. According to the system and the method, the incoherence of a measurement domain and an image domain is perfectly satisfied, and the sparse constraint technology can play a maximum effect. While a nanometer level imaging resolution is achieved, the magnitude order of an existing super-resolution imaging speed is raised. In the condition of maintaining an original imaging speed, the spatial resolution is greatly improved.

Methods and apparatii are provided that use a photosensitive element that is photosensitive to light within a predetermined range of exposure levels to capture images including exposure levels that are outside of the predetermined range of exposure levels. The photosensitive element is exposed to light from a scene. The light from the scene is fractured into concentrated and residual portions with the concentrated portions being directed to form a pattern of concentrated image elements on the photosensitive element when light from the scene is within a first exposure range with the residual portion of the light being directed to form a residual image when light from the scene is within a second exposure range. The light from the scene is adapted also so that the pattern of concentrated image elements is formed in a predefined pattern of concentrated image areas on the photosensitive element.

A holographic content providing method, and a holographic content providing apparatus and a display apparatus using the method may capture and generate holographic content using a real object, a virtual object and lighting information, and may conduct integrated processing on the generated holographic content, such as direct edition, advance visualization, data format conversion, element technologies for optical reconstruction and manufacture process management techniques of holographic content, thereby producing ultrahigh-quality interactive holographic content.

The invention provides a microscopic analyzing device. The microscopic analyzing device comprises a laser source device, a light transmission device, a stochastic optical reconstruction microscopic device, an atomic force microscopic device, a sample bearing device and an information integrating and outputting device. A light source beam provided by the laser source device is guided into the stochastic optical reconstruction microscopic device through the light transmission device, so that a sample to be detected on the sample bearing device is subjected to optical reconstruction microscopic imaging; simultaneously, the atomic force microscopic device carries out atomic force microscopic imaging at the same position; the information integrating and outputting device integrates and outputs stochastic optical reconstruction microscopic information and atomic force microscopic information; therefore, the problem that the sample cannot be qualitatively analyzed by the existing atomic force microscopic imaging can be solved; and thus, the microscopic analyzing device can be widely applied in the fields of biology, polymers and materials.

An apparatus and method for measuring and evaluating a field of view (FOV) that measures an FOV of a reconstructed image of a hologram, and evaluates a quality of the reconstructed image of the hologram is provided, the apparatus configured to photograph an optically reconstructed hologram image based on an integral imaging scheme to obtain an integral image, measure FOV information using the integral image, calculate FOV information of a source based on three-dimensional (3D) stereoscopic information used in the optical reconstruction of the hologram image, and evaluate an FOV reconstruction quality of the hologram image.

Disclosed is an article having a surface-relief holographic recording medium having digital data that cannot be seen by human eye. Also disclosed is a tilted-plane optical reader system which can be used to read the stored data in the hologram.

A method of determining dynamic parameters for a plurality of sub-regions within an interrogation region comprises processing optical image data and measurements of a concentration of contrast agent entering each of the sub-regions to determine a flow-scaled impulse residue function for each of the sub-regions, and calculating dynamic parameters for each sub-region from a respective flow-scaled impulse residue function.

The invention discloses a random optical reconstruction and structured light illumination composite super-resolution imaging system, and the system comprises a light source module which is used for providing a plurality of combined illumination light rays with different wavelengths, controlling the illumination time sequence of the light rays, and controlling the illumination of a single-wavelength light ray, or the alternate illumination of a plurality of wavelength light rays, or the simultaneous illumination of a plurality of wavelength light rays; a composite light field regulation and control module which comprises a first optical regulation and control device used for regulating and controlling the incident light field into a cosine structure illumination light field and a second optical regulation and control device used for regulating and controlling the incident light field into a uniform illumination light field, wherein the two optical regulation and control devices can work independently, alternately or simultaneously; and a fluorescence imaging module which is used for collecting a plurality of original fluorescence images of the sample and reconstructing a super-resolution image by a computer. According to the invention, two super-resolution imaging technologies of random optical reconstruction and structured light illumination are combined on one set of optical imaging platform, and multi-mode and cross-resolution scale simultaneous imaging of a complex biological system can be realized.

The invention discloses a near-infrared breast scanning imaging method. The method comprises the following steps of: performing bidirectional scanning on a breast through a bidirectional detector, obtaining two groups of transmission data based on the bidirectional scanning, modeling voxels of a cross-sectional layer with a specified height in a space where the breast is located based on the two groups of transmission data respectively, obtaining two sets of optical propagation equations containing unknown numbers of breast heights, wherein the two sets of equations are simultaneous to form a positive definite equation set, the number of the equations is greater than the number of the unknown numbers, and the two sets of equations are simultaneous to solve an optical coefficient to determine a value corresponding to each delimited height, thereby obtaining a real cross-sectional imaging value. Therefore, the method can support optical reconstruction of breast internal points at different heights overlapped on a plane projection point of the same detector, and realize real three-dimensional reconstruction. The invention also discloses a near-infrared breast scanning imaging device, equipment, a system and a readable storage medium, which have corresponding technical effects.

The invention relates to the field of security check, particularly relates to security check by using a millimeter wave holographic imaging technology, and particularly provides a three-dimensional special-shaped planar aperture holographic imaging security check radar optical reconstruction method. The optical reconstruction method comprises the following steps: starting and initializing a three-dimensional point cloud measurement subsystem; enabling a plurality of cameras to collect human body optical photos, wherein all the collected human body optical photos form video monitoring data; judging whether to continue shooting or not; according to the video monitoring data acquired by the three-dimensional point cloud measurement subsystem, selecting a human body optical picture with the maximum human face information amount, and extracting human face data according to the human body optical picture with the maximum human face information amount. According to the invention, multiple different types of security check processes can be avoided, and security check steps are simplified; the data acquisition time of the system is shortened; the system is enabled to acquire multidirectional and multi-angle data information, the expandability of the whole system is further improved, and the usability and the detection environment adaptability of the system are enhanced.

The invention provides a two-dimensional information code writing and quick reading method for an optical disc. The method comprises the following steps that: 2i * j system coding is performed on information to be stored to obtain two-dimensional coded information; two-dimensional coding information is written in each storage site in the form of i * j dot matrix recording points through a nanometer information writing method in the storage sites which are sequentially arranged along the channel; and a storage site is irradiated to form a reading light beam spot equivalent to the storage site in size, a reflected light signal is obtained, the reflected light signal is processed and collected based on an optical correlation imaging method, a target signal is inversely solved by adopting an optical reconstruction algorithm, and rapid reading is achieved. The invention further provides a quick reading device. According to the method, the information storage amount is increased through multi-dimensional information writing of the to-be-stored information; and meanwhile, an optical correlation imaging method is adopted for each storage site as a reading method of the optical disc, so that rapid information reading of the optical disc with high storage density can be realized.