4 results about "Reverse video" patented technology

The invention provides a construction operation pole falling video detection method and device based on TPF-Net, and belongs to the field of computer vision, and the method is characterized in that the method comprises the steps: carrying out the preprocessing of an obtained construction operation site monitoring video or an unmanned aerial vehicle aerial video, and carrying out the video frame extraction, size normalization, pixel standardization and noise suppression; and the stability of input data is ensured. One branch is a time sequence visual branch, modeling is carried out on a video frame sequence by adopting the time sequence visual feature extraction network, global time sequence features are extracted, and RTFM loss is introduced, so that the sensitivity of a model to abnormal events such as inclination evolution and sudden instability is enhanced; and the other branch is an attitude estimation branch, extracting pole tower key point coordinates by using an attitude key point detection network, calculating a pole body inclination angle and forming a time sequence angle sequence. Dimension raising is carried out on the angle features through a multi-layer perceptron, weighted fusion is carried out on the angle features and the visual features in the same dimension space, unified feature representation is obtained, and finally a classification head is input to complete recognition of a normal state and a pole reversing state. The method is suitable for rapid deployment and control and edge end real-time operation in the construction operation period, detection precision and calculation efficiency are both considered, and missing detection and false detection of electric pole inclination and falling events under complex background, shielding and auxiliary supporting structure interference can be effectively reduced; and important reference is provided for safety management and control, graded early warning and emergency disposal of a construction operation site.

This application discloses a method, device, and storage medium for generating first and last frame videos based on anchor frame bridging, relating to the field of video generation technology. The method includes: performing a frame order reversal operation based on the input first and last frames to generate a reverse video sequence; evaluating the quality of each frame in the reverse video sequence; determining the optimal anchor frame from the reverse video sequence based on the quality evaluation results; and inputting the first frame, the last frame, and the optimal anchor frame as joint conditions, combined with text prompts, into a video generation model to generate a target video. This application constructs a semantic transmission bridge from the first frame to the last frame by adaptively inserting high-quality anchor frames at key temporal positions, effectively solving the problems of semantic distortion and abrupt transitions in intermediate frames caused by attention decay, and significantly improving the temporal coherence and overall visual quality of the generated video.

The invention discloses a wireless reversing image transmission method and system for a tractor and trailer combined vehicle, and the method comprises the steps: enabling image transmission by a trailer end image transmission terminal under reversing triggering, and outputting trailer end identification information for access; the tractor end image receiving display terminal determines a target trailer end based on the trailer end identification information under reversing triggering, and establishes a reversing video transmission session with the target trailer end; in the reversing video transmission session, executing wireless transmission and display of reversing video data, and performing adaptive adjustment on a transmission parameter and / or a coding parameter based on a link quality parameter so as to meet a preset time delay requirement; and ending the reversing video transmission session when the reversing trigger is released, and recording the access parameter of the session for subsequent rapid access. According to the invention, the real-time performance and continuity of the reversing picture can still be kept when the wireless link condition changes, and the availability and safety of the reversing assistance of the combined vehicle are improved.

The invention provides a reversing image system, a reversing video signal processing method and a storage medium. The system comprises a back-up camera circuit used for acquiring back-up video signals and outputting the back-up video signals through a first channel and a second channel; the display control circuit is used for receiving the reversing video signal, converting the reversing video signal of the channel I into data which can be displayed by a display, outputting the data to the display, and detecting the display content of the display to obtain a detection result; and the signal control circuit is used for controlling the display control circuit to display the reversing video signal of the channel I or the channel II according to the detection result. According to the method and the device, the reversing image is effectively prevented from being abnormal, the definition and the stability of the reversing image are improved, the driving visual assistance effect and the user experience are improved, accidents can be better avoided, and the safety of the system is improved.