Tencent Technology (shenzhen) Company Limited

Daan Gene Co., Ltd.

Ningbo Grandlink Eletronic Technology Co., Ltd.

Zhiqiang Dong

Bin Li

Dan Li

Xiwen Jiang

Shengli Ji

Weikun Lin

Lili Liao

Zhuang Zhang

Qiao Xia

Zhou Han

Yunshao He

Hanrong Li

This disclosure is directed to an image authenticity detection method and apparatus. The method includes: obtaining an image; removing low-frequency information from the image to obtain first image information of the image; denoising the first image information to obtain second image information; determining, based on a difference between the first image information and the second image information, a fixed pattern noise feature map corresponding to the image; analyzing distribution of fixed pattern noise in the fixed pattern noise feature map, the fixed pattern noise being inherent noise from a camera sensor and not interfered by image content; and detecting, based on the distribution, authenticity of the image to obtain an authenticity detection result of the image.

Image authenticity detection method and apparatus

Improved accuracy of data encryption can be achieved with dynamic expansion according to the traffic volume of a user. A processing server transmits a key identifier to a hardware security module server which obtains a root key corresponding to the key identifier and encrypts the root key to generate a master key. The master key is encrypted to generate a data key, and the to-be-encrypted data is encrypted using the data key to generate encrypted data. The processing server can accurately and effectively encrypt data, improving the accuracy of data encryption and the security of data processing.

Data processing method, apparatus, computer program, and storage medium

This application discloses a face anti-spoofing recognition method and apparatus, a device, and a storage medium, and relates to the field of artificial intelligence (AI) technologies. The method is performed by a computer device, including: acquiring face video data including a to-be-detected face; detecting eye contours of the to-be-detected face from image frames of the face video data, and generating an eye contour sequence; performing eye movement probability prediction based on the eye contour sequence, and generating an eye movement state sequence; acquiring a first dataset and a second dataset in the eye movement state sequence; determining a probability of existence of an abnormal blink behavior of the to-be-detected face according to the first dataset and the second dataset; and determining that the to-be-detected face is a real face in a case that the probability is less than a predetermined threshold.

Face anti-spoofing recognition method and apparatus, device, and storage medium

Smart cooker

The present invention discloses a swab sample nucleic acid releaser and use thereof. The sample releaser includes 1-20 mol/L of a metal ion chelating agent, 5-80 mmol/L of a buffer at pH 6-9, 5%-40% (v/v) of a polar organic solvent, 0.2%-10% (v/v) of a surfactant, and 0.1-1 mol/L of a nuclease inhibitor. The sample releaser can integrate three steps of sampling and preservation, inactivation, and nucleic acid extraction into one step, and after sampling, the sample can be directly put into a sampling tube equipped with the sample releaser for storage and transportation; and when in use, the sampling tube is turned upside down and mixed well, and after the sample and the sample releaser are fully mixed, it is let stand for a few minutes at room temperature to release the nucleic acid of the sample.

Swab sample nucleic acid releaser and use thereof

Growing community of inventors

Guangdong, China

Zhiqiang Dong