7results about How to "High resolution imaging" patented technology

The application relates to a multi-aperture imaging space remote sensing target positioning optical system and a calibration method, and relates to the field of remote sensing and aerospace imaging optical instruments. The application solves the contradiction between the requirements of a large field of view and high resolution imaging of a traditional single-aperture optical imaging system, and realizes accurate positioning of a target to meet the intelligent requirements of a multi-aperture optical imaging system. The multi-aperture imaging space remote sensing target positioning sub-aperture imaging optical system comprises an electromagnetic vibration mirror, a beam-reducing telescope group, a fast reflection mirror and a rear focusing mirror group. The beam-reducing telescope group and the rear focusing mirror group are connected through the fast reflection mirror, and the light beam is connected with an imaging branch through the electromagnetic vibration mirror. After the imaging light beam passes through the telescope system, the imaging light beam is reflected by the fast reflection mirror and focused on a detector to form an image. The application is also suitable for a mobile platform for fast positioning and high-precision capturing of a dynamic target in the field of industrial precision machining and space remote sensing.

The embodiment of the invention discloses a plane X-ray imaging detection method and system. The method comprises: irradiating a plurality of regions of a human body with planar X-rays; acquiring energy projection data of a plurality of energy windows of a plurality of areas of the human body by using a photon counting detector; obtaining image information of a corresponding human body area according to the energy projection data of the plurality of energy windows; and splicing the multiple pieces of image information to obtain a detection image. According to the planar X-ray imaging detection method and system disclosed by the embodiment of the invention, abundant detection information can be conveniently and accurately obtained under the combined action of the planar X-ray and the photon counting detector.

This invention relates to the field of marine engineering and geological science experimental technology, specifically to a real-time visualization observation device and method for fine-grained sediment flocculation. The device includes a water tank and a sand discharge box disposed within the water tank. The sand discharge box contains a sand discharge trough, which is arc-shaped. This real-time visualization observation device for fine-grained sediment flocculation, equipped with multi-directional sand discharge components, effectively adapts to the differentiated sand discharge needs at different flocculation stages. It solves the shortcomings of traditional sand discharge methods, which have fixed heights and angles and cannot simulate complex flocculation environments. The arc-shaped sand discharge trough guides the direction of sediment discharge. The lifting component achieves gradual adjustment of the sand discharge height through the cooperation of the squeezing ring and squeezing plate. The locking component securely fixes the sand discharge height. The overall structure has strong linkage and is easy to operate, allowing for flexible adjustment of sand discharge parameters to simulate fine-grained sediment flocculation scenarios under different natural conditions. This expands the applicability of the device, reduces the difficulty of experimental operation, and improves experimental efficiency.

The invention discloses a microwave correlated imaging method and device based on frequency and phase joint modulation, and relates to the technical field of radars. The method comprises the following steps: acquiring radar parameters; performing grid division on the target imaging scene; constructing a random radiation field of frequency and phase joint modulation based on radar parameters, a grid division result and a frequency and phase modulation function; receiving an echo signal of the target by using the random radiation field, and obtaining a distance pulse pressure envelope based on the received echo signal; and on the basis of the sub-optimization problems of the random radiation field, the distance pulse pressure envelope and the noise variance, the sub-optimization problem of the target sparse characteristic parameter and the sub-optimization problem of the super-resolution image reconstruction, the super-resolution image of the target is determined by alternately estimating the noise variance, the target sparse characteristic parameter and the super-resolution image. The method can effectively solve the problems that a random radiation field is single in construction mode and insufficient in flexibility, the image super-resolution capability is remarkably reduced under the condition of a low signal-to-noise ratio, and the imaging quality is limited.

The application provides a micro-nano optical element, an optical lens and a camera, and relates to the technical field of spectral imaging. The micro-nano optical element comprises oppositely arranged first and second surfaces; the first surface comprises a light filtering film layer, and the light filtering film layer is used for blocking light of a wavelength outside a preset wavelength band; and the second surface comprises a plurality of annular step structures, the height of the step structure is proportional to the wavelength value of the preset wavelength band, so that the light of the preset wavelength band can be effectively collected, the light of other wavelength bands can be filtered, and high-resolution imaging of the preset wavelength band can be realized.

The application provides a kind of based on physical drive deep learning's non-diffraction computing ghost imaging optimization method, using the deep learning method of cyclic consistent generative adversarial network model based on physical drive inhibits the image quality degradation caused by quasi-non-diffraction speckle point spread function multi-stage side lobe, improves the imaging quality and depth of field of computing ghost imaging, comprising: using annular phase template generates quasi-non-diffraction speckle;The binary image data set is reconstructed to obtain the initial reconstructed image;The real physical imaging degradation process is embedded into the network as an explicit physical priori, a physical driven double cycle generative adversarial network model is constructed and trained;The transmission light intensity of the actual target is collected by using a single-pixel detection system and is correlated and reconstructed, and the reconstructed image with high-order oscillation is input into the trained network model, and finally a high-quality target image is reconstructed.The application significantly removes the high-order oscillation caused by the side lobe of quasi-non-diffraction speckle point spread function, while maintaining the advantage of large depth of field, realizes high-resolution and high-quality image reconstruction.This also provides a new idea for the subsequent research of long-distance imaging of computing ghost imaging.

The application discloses a kind of full clear high-resolution circuit board image acquisition device and method.The device includes scanning motion mechanism, visual acquisition component installed at its end and control processing unit.The method is first according to circuit board size, field of view range and overlap rate planning scanning path;In mechanism moves to acquisition point position and utilizes continuous frame difference motion score determination stable, multiplex scanning motion mechanism is adjusted height in Z direction to determine target focusing height;Then focus point sequence image is collected near focusing height and is obtained local full clear image by depth of field synthesis;Finally, multiple local images are registered in overlapping area, globally optimized and corrected in brightness consistency, and generate whole board high-resolution image.The application can consider whole board imaging range and local detail resolution, improve the clarity of circuit board image acquisition, splicing accuracy and brightness consistency, suitable for circuit board detection, reverse analysis and quality traceability etc.