Chinese Academy of Sciences

Beijing Dream Ink Technologies Co., Ltd.

Beijing Engo Technology Co., Ltd.

Zhiqiang Cao

Min Tan

Jing Liu

Yang Yu

Chao Zhou

Shuang Liang

Shijin Dong

Zhonghui Li

Xilong Liu

Jinli Kang

Kun Ai

Chengpeng Wang

A LiDAR odometry method based on the directed geometric point and sparse frame includes: obtaining original three-dimensional point cloud data of a surrounding environment in the coordinate system of the current frame of the LiDAR sensor; constructing and converting the first directed geometric point set and first environmental directed geometric point set into the second directed geometric point set and second environmental directed geometric point set in the world coordinate system, respectively; calculating candidate associated points in the second environmental directed geometric point set in association with each point in the second directed geometric point set, and determining the best associated point of each point in the second directed geometric point set; constructing and solving a pose optimization function to obtain an optimized pose from the coordinate system of the current frame of the LiDAR sensor to the world coordinate system; and updating directed geometric point sets of sparse frames.

LiDAR odometry method, system and apparatus based on directed geometric point and sparse frame

A liquid metal-based information identification system includes a recognizer and a smart tag. The smart tag is configured to record environment information of an environment where an article is located through a sensor, and to send the environment information to the recognizer via a flexible circuit. The flexible circuit is internally used by the smart tag and comprises a circuit made of a liquid metal provided with a microfluidic channel including a vacuum chamber. When the liquid metal is in a phase transition, the liquid metal enters the microfluidic channel in such a manner that the circuit made of the liquid metal is short-circuited or disconnected. The recognizer is configured to receive and analyze the environment information, and to download first information of an article production link to the smart tag.

Liquid metal-based information identification system

The disclosure relates to a method for detection of the horizontal and gravity directions of an image, the method comprising: selecting equidistant sampling points in an image at an interval of the radius of the sampling circle of an attention focus detector; placing the center of the sampling circle of the attention focus detector on each of the sampling points, and using the attention focus detector to acquire attention focus coordinates and the corresponding significant orientation angle, and all the attention focus coordinates and the corresponding significant orientation angles constitute a set &#x3a9;; using an orientation perceptron to determine a local orientation angle and a weight at the attention focus according to the gray image information, and generating a local orientation function; obtaining a sum of each of the local orientation functions as an image direction function; obtaining a function M(&#x3b2;), and further obtaining the horizontal and gravity identification angles.

Method for detecting horizontal and gravity directions of an image

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Beijing, China

Zhiqiang Cao