Shenzhen University

Tencent Technology (Shenzhen) Company Limited

Huawei Technologies Co., Limited

Mingyang Chen

Qiang Li

Lei Huang

Xiaopeng Li

Qian Wang

Xiao Han

Kaiwen Xiao

Niyun Zhou

Hu Ye

Lifang Feng

Tianyao Long

Mingyu Chen

Peiwen Wu

A method and a device for constructing a redundancy-removed coprime radar array based on one-bit quantization. The method includes obtaining a first sub-array element and a second sub-array element both used for constructing a redundancy-removed coprime radar array, and determining a redundancy-removed coprime array respectively corresponding to the first sub-array element and the second sub-array element by a graph theory method; obtaining target echo data of the redundancy-removed coprime array, and obtaining a target radar array by performing one-bit quantization on the target echo data for completing array cavities of the redundancy-removed coprime array; moreover, before the completing, positions of all non-empty array elements in a redundancy coprime array are used to place radars, and before the completing, the radars are not arranged in positions of empty array elements.

Method and device for constructing redundancy-removed coprime radar array based on one-bit quantization

A computer device obtains a to-be-annotated image having a first magnification. The device obtains an annotated image from an annotated image set, the annotated image distinct from the to-be-annotated image and having a second magnification that is distinct from with the first magnification. The annotated image set includes at least one annotated image. The device matches the to-be-annotated image with the annotated image to obtain an affine transformation matrix, and generates annotation information of the to-be-annotated image according to the affine transformation matrix and the annotated image. In this way, annotations corresponding to images at different magnifications may be migrated. For example, the annotations may be migrated from the low-magnification images to the high-magnification images, thereby reducing the manual annotation amount and avoiding repeated annotations, and further improving annotation efficiency and reducing labor costs.

Image annotation method and apparatus, annotation presentation method and apparatus, device, and storage medium

A method, a system and an intelligent terminal for one-bit quantization DoA estimation, which include: when a quantity of far-field and uncorrelated spatial narrow-band source signals are incident from different directions to a uniform linear array receiver, receiving the narrow-band source signals by a quantity of antenna array elements, and the vector and matrix are used to model the received signals by one-bit quantization to obtain a joint probability mass model of one-bit quantization DoA estimation; deriving the joint probability mass model of one-bit quantization DoA estimation, and constructing an lnorm optimization model based on the maximum likelihood principle; solving the steepest descent direction of the optimization model by steepest descent method to obtain the one-bit quantization DoA and the source number.

Method, system, and intelligent terminal for one-bit quantization direction of arrival estimation

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Mingyang Chen