Dell Products Inc.

Continental Automotive Gmbh

Southwest Petroleum University

Bo Hu

James Herbst

Changxu Jiang

Qian Li

Yulong Zhao

Tao Zhang

Bingtao Gao

Ruihan Zhang

Shuang Zheng

Jianfa Wu

Jian Zheng

Feng Ge

Cheng Luo

Hongxi Li

Han Zhang

Ling Yan

Tongheng Chen

Dehao Liu

Hans Christian Thiel

Disclosed are a device and method for determining gas diffusion coefficient in rocks. The device includes: a core holder, a sampling mechanism, a gas analyzer, a gas source and a pressure gauge. A middle part of the core holder holds a rock sample, two sampling mechanisms are symmetrically arranged at two ends of the rock sample, each sampling mechanism includes a first blind tube, a cylinder, a second blind tube and a sampling cavity, an open end of the first blind tube faces the rock sample and is in sealing connection with an end surface of the rock sample to form a diffusion chamber. A single sampling cavity is isolated from the diffusion chamber, and the pressure of the diffusion chamber is not affected, so that undisturbed sampling is achieved, the influence on the pressure of the diffusion chamber is reduced, and the accuracy of the determination results is improved.

Device and method for determining gas diffusion coefficient in rocks

Embodiments of the present disclosure relate to a method, a device, and a computer program product for processing logs. The method includes determining, based on a duration of a predetermined number of log entries recently recorded by a log recording component, a target log recording component from a group of candidate log recording components. The method further includes determining, based on a predetermined number of log entries recently recorded by the target log recording component, a log group including a plurality of similar log entries. The method further includes determining a duplicate content among the plurality of log entries in the log group and a distinctive content for each of the plurality of log entries. The method further includes updating the plurality of log entries by de-duplicating the duplicate content and retaining the distinctive content for each of the plurality of log entries.

Method, device, and computer program product for processing logs

A method of complementing a map of a scene with 3D reference points including four steps. In a first step, data is collected and recorded based on samples of at least one of an optical sensor, a GNSS, and an IMU. A second step includes initial pose generation by processing of the collected sensor data to provide a track of vehicle poses. A pose is based on a specific data set, on at least one data set recoded before that dataset and on at least one data set recorded after that data set. A third step includes SLAM processing of the initial poses and collected optical sensor data to generate keyframes with feature points. In a fourth step 3D reference points are generated by fusion and optimization of the feature points by using future and past feature points together with a feature point at a point of processing. This second and fourth steps provides significantly better results than SLAM or VIO methods known from prior art, as the second and the fourth steps are based on recorded data. Wherein a normal SLAM or VIO algorithm only can access data of the past, in these steps, processing may also be done by looking at positions ahead, by using the recorded data.

Method for generating 3D reference points in a map of a scene

Growing community of inventors

Chengdu, China

Bo Hu