3results about How to "Avoid recording" patented technology

The application relates to the field of food safety traceability technology, in particular to a cold-chain transportation food traceability method and system based on food safety. The method comprises the following steps: on a cold-chain transportation vehicle, environment data and vehicle operation state data in a carriage are synchronously collected within a preset time interval, and the collected environment data and the vehicle operation state data are packaged into a context snapshot data packet; the context snapshot data packet is digitally signed by using a pre-stored private key; the signed context snapshot data packet is transmitted to a food traceability distributed ledger through an encryption channel, is verified, and according to a preset logic judgment rule, the internal logic consistency between the environment data and the vehicle operation state data in the context snapshot data packet is cross-compared; through the cross comparison of the environment data and the vehicle operation state data and in combination with the digital signature technology, the application can verify the authenticity of the data from the dual dimensions of the physical world and the digital world.

The invention relates to a road steel slag volume stability evaluation method and system based on image recognition, and the method comprises the steps: building a steel slag image collection system, and carrying out the spatial calibration of the system; the method comprises the following steps: placing to-be-detected steel slag in a system, and collecting an image of the steel slag within a set time through the system; processing the image to obtain a damage area displayed in the image, and segmenting a bump area and a crack area in the image according to morphological characteristics of the steel slag; according to the corresponding relation of space calibration, obtaining the accurate size of the actual bump and crack of the steel slag from the segmented bump and crack areas in the image; performing dynamic modeling and analysis on the expansion state of the steel slag according to the accurate size to obtain the expansion rate and the expansion rate of the bumps and the cracks; and evaluating the steel slag according to the early warning threshold value. According to the method, the detection efficiency and the result objectivity are improved, and reliable technical support is provided for quality control and safe utilization of the road steel slag.

Embodiments of the present application provide an identity detection method and device for reducing attack risk, a medium and equipment, the method comprising: obtaining a video with glare containing a face to be detected; selecting a plurality of key video frame images from the video with glare, and arranging the key video frame images in the order of recording time to obtain a sequence of video frame images; obtaining a target face region of each key video frame image in the sequence of video frame images; extracting color information of each target face region, and determining key color information corresponding to each sequence group; determining whether the key color information corresponding to each sequence group in the sequence of video frame images corresponds to a preset background light opening sequence, to obtain a judgment result of whether the face to be detected in the video with glare passes the identity detection. The embodiments of the present application can prevent hackers from recording a fake video with glare in advance to invade a face recognition system to replace a real video with glare, thereby cheating the face recognition system.