13 results about "Video overlay" patented technology

The invention provides an open pit coal mine safety management and control method and device, electronic equipment and a storage medium, and relates to the technical field of mine field safety protection. The position of a key person is obtained in real time, whether the key person enters a corresponding operation area or not is verified, associated video monitoring is automatically triggered according to the in-place state of the person, safety measure execution is verified through real-time mapping of a video stream and an operation process state, and early warning is conducted when the safety measure execution is abnormal. The problems that in the prior art, due to the fact that a'process-position-video 'triple closed-loop verification mechanism is not formed and multi-source data space-time alignment and dynamic verification are not achieved, the security measure execution rate is insufficient, supervision lags behind, positioning data staticization is caused, video coverage is not matched, approval information is delayed, and data errors exist can be solved.

The present disclosure relates to a method and system for providing a platform agnostic mixed reality experience to users. The method includes determining, by a mixed reality system, activation of a trigger during a real-world view captured by a user device of a user, the trigger being associated with a mixed reality experience identifier (ID). The method also includes providing, by the mixed reality system, access to one or more assets linked to the mixed reality experience ID. The one or more assets are dynamically downloaded to the user device. Further, the method includes rendering, by the mixed reality system, an alpha channel video overlay on the real-world view. Moreover, the method includes enabling, by the mixed reality system, user interaction with the alpha channel video overlay using one of gestures and touch inputs to render a mixed reality experience to the user.

The invention discloses a space target positioning method and device based on monitoring visual data and a medium. The method comprises the following steps: establishing a camera parameter model, calculating a projection area of a video on the ground by using a geometric projection principle based on the camera parameter model, and determining a geographic space range covered by the video; establishing a conversion relation between a video image coordinate system and a geographic space coordinate system based on a coordinate conversion algorithm in combination with a geographic space range covered by a video; constructing a geometric model of two-dimensional camera imaging and three-dimensional geographic space based on the camera parameter model and a coordinate conversion algorithm; when the video system detects an alarm event and generates an alarm image, extracting pixel coordinates of an alarm object in the image; converting the pixel coordinates of the alarm object into geographic space coordinates; and the converted geographic space coordinates are associated and analyzed with space data in a GIS system, and accurate position information of an alarm object is provided.

This invention discloses a video tag dynamic overlay anti-shake method and system based on AR, comprising: acquiring real-time video stream and device pose parameters at corresponding timestamps; constructing a dynamic perspective projection model based on the device pose parameters and calculating the initial pixel coordinates of the target AR tag in the current video frame; planning a local feature search window based on the initial pixel coordinates; calculating the average pixel displacement vector of image feature points in the local feature search window of the current and adjacent historical video frames; performing reverse displacement compensation on the average pixel displacement vector to obtain the target rendering coordinates, and rendering the target AR tag to the current video frame based on the target rendering coordinates. Compared with the prior art, this invention can overcome the shortcomings of large drift errors caused by simply relying on mechanical pose, high computational power consumption caused by global matching, and high-frequency jitter of tags caused by slight device vibrations, thereby improving tag mapping accuracy, reducing system computational power consumption, and improving the visual stability of video overlay.

A video system comprises a video overlay processor. The video overlay processor is configured to receive a video stream from a camera system in real time during operation of a platform. The video overlay processor is configured to overlay a first pattern and a second pattern on an alternating and repeating basis onto frames sequentially in the video stream in real time to form a modified video stream. The video overlay processor is configured to display the modified video stream in real time on a display system, wherein the first pattern and the second pattern in the frames in the modified video stream are perceptually hidden on the display system in response to the frames in the modified video stream being displayed without interruption.

The invention relates to a video and map data mapping method based on three-dimensional geographic information, and the method comprises the steps: (1) obtaining the three-dimensional geographic coordinates of a starting point and a target point, respectively including the longitude, latitude and elevation data of each point, picking up the video pixel coordinates and the three-dimensional geographic coordinates of the target point, and constructing a serialized feature point pair; (2) according to the serialized feature point pairs, camera geographic calibration based on the feature point pairs is carried out; and step (3), mapping the three-dimensional geographic coordinates of all points in the geographic space in the video coverage area into video pixel coordinates based on a rotation matrix constructed after camera geographic calibration, or mapping the video pixel coordinates of all points in a camera picture into three-dimensional geographic coordinates.

A video system comprises a video overlay processor. The video overlay processor is configured to receive a video stream from a camera system in real time during operation of a platform. The video overlay processor is configured to overlay a first pattern and a second pattern on an alternating and repeating basis onto frames sequentially in the video stream in real time to form a modified video stream. The video overlay processor is configured to display the modified video stream in real time on a display system, wherein the first pattern and the second pattern in the frames in the modified video stream are perceptually hidden on the display system in response to the frames in the modified video stream being displayed without interruption.

This invention provides a video playback method, apparatus, system, storage medium, and electronic device. The method includes: sending acquired page information of a target page to a player to instruct the player to determine target video window information corresponding to the target page; receiving first request information sent by the player; responding to the first request information and determining the target video window corresponding to the target video window information from N video windows; and sending object information of the target video window to the player to instruct the player to play the target video in the target page using the object information in the target video window. This invention solves the problem in related technologies where multi-layered video overlay display is not possible, achieving the effect of multi-layered video overlay display.

This invention provides a video processing method, apparatus, electronic device, and storage medium, relating to the field of video processing technology. The method includes: acquiring a first image frame; segmenting the first image frame to obtain multiple segmented images; where each of the multiple segmented images is a first segmented image, inputting the multiple first segmented images into multiple overlay processing threads corresponding to the multiple first segmented images, and performing overlay processing on the regions to be processed in the first segmented images input to each overlay processing thread; wherein the number of regions to be processed in the first segmented images is greater than zero; determining multiple processed segmented images corresponding to the multiple segmented images based on the processing results output by each overlay processing thread; and stitching the multiple processed segmented images together to obtain a second image frame to be played. This invention can improve the efficiency of the video overlay processing process and increase the resource utilization of the system.

A camera display system is provided for a vehicle including an image sensor configured to capture video images including a plurality of image frames and a display system. The display system includes an overlay buffer, an image processor, and a display for displaying the images received from the image processor. The image processor configured to: (a) build and store an overlay image in the overlay buffer, (b) receive an image frame from the image sensor, (c) read the overlay image from the overlay buffer, (d) perform an integrity check on the read overlay image to ensure it has not become corrupted, (e) when the integrity check is passed, superimpose the overlay image onto the image frame and repeat steps (b)-(d); and (f) when the integrity check is failed, repeat steps (a)-(d). The display system further includes a display for displaying the images received from the image processor.

A video overlay device is provided for use in surgical settings to overlay surgical parameters from a surgical console on images from a surgical microscope. The device includes a video input port configured to receive image data from a camera and a data port configured to receive a removable storage device storing encrypted WiFi configuration data. The apparatus further includes a WiFi transceiver configured to connect to a local WiFi network hosted by the surgical console based on the encrypted WiFi configuration data, and to receive coverage data from the surgical console. The apparatus further includes a processor configured to generate combined image data based on the image data and the overlay data, and a video output port configured to transmit the combined image data to the display.

The invention relates to the technical field of artificial intelligence and digital video processing, and discloses an AI-based intelligent video superposition system and a dynamic transparency adjusting method, and the system comprises a data collection module, a cognitive focus processing module, a dynamic analysis engine module, an arbitration and mask generation module, and a video synthesis and output module. The system obtains background and coverage layer video streams and user original gaze point data; the staring point is processed through time domain filtering, and a stable user cognitive focus state is output; the dynamic analysis engine analyzes the video content and generates an importance map and a cognitive load; integrating all input execution arbitration logic to generate a target mask, and performing time domain smoothing to generate a final mask; when the user watches the background, only the transparency of the non-key area of the covering layer is reduced; finally, the system uses the final mask to transparently mix the dual video streams. According to the method, the transparency can be adaptively adjusted, visual conflicts are effectively reduced, the cognitive load of a user is reduced, and intelligent on-demand allocation of computing resources is realized.

The invention discloses an iron tower operation safety monitoring method and equipment based on multi-channel video synchronous processing, and relates to the related technical field of video processing, and the method comprises the steps: distributing and deploying cameras in a high-risk operation block, and obtaining an operation monitoring array; performing video coverage analysis according to camera deployment features to obtain a spatial correlation topology; when an operation user enters the view field of the first monitoring camera, loading the associated video according to the topology to obtain multiple paths of videos; carrying out single-view key point detection on the video to obtain a 2D sequence; after frame alignment is carried out on the 2D sequence, triangulation is carried out based on the key points, and a 3D sequence is generated; performing security risk judgment based on the 3D sequence, and outputting risk features; and an early warning notification is triggered according to the risk characteristics, so that the technical problems of inaccurate high-risk operation block identification and low dynamic monitoring efficiency of the personnel posture and the environment risk are solved, and the technical effects of improving the comprehensiveness, accuracy and emergency response efficiency of operation safety monitoring are achieved.