Chengdu Zhongxin Huarui Technology Co., Ltd.

University of Electronic Science and Technology of China

Southwest Jiaotong University

Jun Qin

Longjiang Deng

Lei Bi

Yan Zhang

Wei Yan

Yue Qin

Yinan He

Jiawei Long

Weihao Yang

Shuyuan Liu

Disclosed are a motion imaging compensation device and method, relating to imaging technology. The motion imaging compensation device includes a base, an imaging unit, a motion compensation unit and a control system. The base is configured to support the imaging unit, the motion compensation unit and the control system. The motion compensation unit includes a primary rotating structure, a secondary rotating structure and an optical assembly. A rotation shaft of the secondary rotating structure is parallel to that of the primary rotating structure in the three-dimensional space, with an opposite rotating direction. The secondary rotating structure is connected to the optical assembly to drive it to rotate. Rotations of the primary rotating structure and the secondary rotating structure are controlled according to a preset control procedure. The imaging field of view is imaged in a relatively stationary state in a preset motion compensation interval.

Motion imaging compensation device and method

A lidar system, including: a laser, an optical detector, a laser antenna, and a silicon-based integrated magneto-optical circulator. The silicon-based integrated magneto-optical circulator includes a silicon-based integrated Mach-Zehnder interference structure or a silicon-based integrated micro-ring structure, and silicon-based integrated magneto-optical waveguides. The silicon-based integrated magneto-optical circulator further includes an input port, a receiving port, and an emission port. The laser is aligned and coupled to the input port of the silicon-based integrated magneto-optical circulator via an optical fiber, a grating coupler, or an edge coupler. The optical detector is aligned and coupled to the receiving port of the silicon-based integrated magneto-optical circulator via the optical fiber, the grating coupler, or the edge coupler. The laser antenna is aligned and coupled to the emission port of the silicon-based integrated magneto-optical circulator via the optical fiber, the grating coupler, or the edge coupler.

Lidar system based on silicon-based integrated magneto-optical circulator

The disclosure provides a self-biased magneto-optical non-reciprocal metasurface device. The device includes substrate layer and a sub-wavelength structure layer. The substrate layer is a material layer with a refractive index of 1 to 5 in a microwave frequency band. The sub-wavelength structure layer includes a plurality of square columnar elements arranged in a matrix period with equal period in row and column directions. The square columnar elements include magneto-optical material. The adjustment of phase and amplitude of a circularly polarized electromagnetic wave is achieved by changing the length, width and height of the square columnar elements, and thus the device attains a desired isolation and insertion loss at a center frequency f. The parameters of the magneto-optical material are: coercivity Hc&#x2265;1000 A/m; remanence Br&#x2265;1 kGs; a voigt parameter of a permittivity tensor or permeability tensor in a working frequency band&#x2265;0.01.

Self-biased magneto-optical non-reciprocal metasurface device

The application provides a cross-row time delay integral method, apparatus and camera. The method includes obtaining a first stage integral energy in an i-th target region from an i-th row of a first integral piece domain; transferring the first stage integral energy across rows to an i-th row of a second integral piece domain; obtaining the first stage integral energy and an second stage integral energy accumulated in the i-th target region from the i-th row of the second integral piece domain, after an integration period; outputting an image of the i-th target region containing the first stage integral energy and the second stage integral energy. The application performs cross-row integration through the energy obtained by imaging, the shooting of the target can be carried out in a higher-speed environment, the method can be implemented on the existing photoelectric device, and the method has excellent imaging quality and wide applicability.

Cross-row time delay integration method, apparatus and camera

The present application relates to a detection method, belonging to the technical field of anti-fake detection. The detection method comprises steps of: acquiring reference imaging spectral data and imaging spectral data of a surface of an object to be detected; obtaining spectral reflectance of the surface of the object to be detected according to the reference imaging spectral data and the imaging spectral data of the surface of the object to be detected; matching the spectral reflectance of the object to be detected with spectral reflectance, stored in a calibration library, of an original object corresponding to the object to be detected; determining that the object to be detected is consistent with the original object if the matching of spectral reflectance is successful; and determining that the object to be detected is not consistent with the original object if the matching of spectral reflectance is failed.

Detection method, device, apparatus and computer storage medium

The present invention belongs to the field of image processing, and particularly relates to the determination of an aerial remote sensing image fuzzy parameter and the elimination of aerial remote sensing image fuzziness based on a TDI-CCD camera. The method comprises the following specific steps: establishing an image coordinate system, reading an area array image, constructing a similarity matching criterion, conducting offset resolving to acquire homonymy points so as to obtain a digital image reducing the chattering influence. The method is relatively simple and precise in computing process, and good in processing effect.

Growing community of inventors

Chengdu, China

Jun Qin