Contemporary Amperex Technology (hong Kong) Limited

Contemporary Amperex Technology Co., Ltd.

Contemporary Amperex Technology Limited

Fei Chen

Guannan Jiang

Hongji Sun

Tianhui Wu

Guan Chen

Xiaoyi Chen

A method and apparatus for detecting a defect on a surface of a cell, including: obtaining an initial image of the surface of the cell by using an image acquisition unit; preprocessing the initial image to obtain at least one image to be detected of the surface of the cell; and inputting the at least one image to be detected into a defect detection neural network model, and obtaining a detection result outputted by the defect detection neural network model, the detection result being used to indicate whether there is a defect on the surface of the cell is described. According to technical solutions, features of the defect in the image may be made prominent, so as to facilitate subsequent detection of the defect detection neural network model; and more features may be extracted from the image, thereby improving the efficiency and accuracy of defect detection.

Method and apparatus for detecting defect on surface of cell

A calibration scale includes a scale body and at least two calibration pattern subsets arranged on the scale body along a first direction. The at least two calibration pattern subsets include a plurality of first calibration blocks arranged at spacings along the first direction and staggered along a second direction. Projections of the plurality of first calibration blocks in each calibration pattern subset along the first direction have a first overlapping area. Projections of at least two first overlapping areas along the first direction have a second overlapping area.

Calibration scale, calibration method and apparatus, and detection method and apparatus

A welding mark inspection method includes acquiring a picture including a welding mark, and obtaining a classification type of the welding mark based on the picture and a welding mark classification model. The welding mark classification model is configured to classify the welding mark based on characteristics of the welding mark.

Welding mark inspection method and apparatus, and electronic device

This application provides a method for measuring dimensions to reduce measurement time and improve production efficiency, including: obtaining a first image and a second image of a to-be-measured workpiece, where the first image and the second image are images captured by a first camera and a second camera at different positions respectively; extracting a first corner set of the to-be-measured workpiece from the first image and a second corner set of the to-be-measured workpiece from the second image separately; rectifying position coordinates of the first corner set and position coordinates of the second corner set to obtain a position coordinate value of the first corner set and a position coordinate value of the second corner set in a same coordinate system; and obtaining dimensions of the to-be-measured workpiece based on the position coordinate value of the first corner set and the position coordinate value of the second corner set.

Growing community of inventors

Ningde, China

Fei Chen