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Multi-channel video stream generation method and device

A multi-channel video and video streaming technology, applied in closed-circuit television systems, televisions, color televisions, etc., can solve problems such as increasing costs, and achieve the effect of reducing hardware costs and implementing simple methods.

Inactive Publication Date: 2020-06-02
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to provide sufficient and necessary information to the subsequent intelligent video analysis system, it is necessary to obtain relatively clear images of the face and the license plate at the same time, and if two cameras are used to obtain the face image and the license plate image separately, the cost will increase

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  • Multi-channel video stream generation method and device
  • Multi-channel video stream generation method and device
  • Multi-channel video stream generation method and device

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Embodiment Construction

[0024] First of all, some terms used in this application are explained to facilitate the understanding of those skilled in the art.

[0025] 1. A wide dynamic range image sensor refers to an image sensor that can support a wide dynamic range (Wide Dynamic Range, WDR) working mode. When the image sensor works in WDR mode, it acquires multiple images and transmits them to the image processing chip to synthesize a wide dynamic range image. Each image corresponds to different shooting parameters. The shooting parameters include exposure time and image gain. WDR mode The shooting parameters below can be set by the user. Among them, the longer the exposure time when collecting images, the more photoelectrons are accumulated, and the brighter the collected images are.

[0026] 2. Single frame time refers to the frame interval of the video stream output by the camera. Usually, when the video frame rate of the camera output reaches 25 frames per second, the video can be played smoothl...

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Abstract

The embodiment of the invention provides a multi-channel video stream generation method and device, and the method comprises the steps that an image sensor can collect a plurality of images accordingto different photographing parameters and form an image sequence, and an image processor enables the image sequence to be separated according to the different photographing parameters, thereby forminga multi-channel video stream. According to the method provided by the embodiment of the invention, different shooting parameters can be set for the image sensor, and the image sensor is subjected totime division multiplexing to obtain the image data of different shooting parameters, so that multiple paths of video streams with different purposes are obtained. According to the embodiment of the invention, one image sensor is multiplexed in a time-sharing manner to obtain multiple paths of video streams, additional hardware equipment is not needed, and cost can be saved.

Description

technical field [0001] The present application relates to the field of video monitoring, in particular to a method and device for generating multiple video streams. Background technique [0002] With the development of video surveillance technology, surveillance has developed from simple video recording to intelligent development. Smart cameras are currently a hot spot in the development of the security industry. Whether it is intelligent vehicle monitoring at roads and bayonets or face capture and recognition on ordinary streets, they all rely on the excellent performance of smart cameras. With the growth of user demands and the advancement of smart camera software and hardware technology, how to improve the performance of the camera has become a research hotspot. [0003] At present, there are obvious differences in the shooting parameters of smart cameras in the face capture mode and the license plate capture mode: in the face capture mode, in order to ensure the brightn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/225H04N5/232H04N5/262H04N7/18
CPCH04N7/18H04N5/2625H04N23/54H04N23/611H04N23/667H04N23/95H04N5/262H04N23/60
Inventor 王佛荣张恺
Owner HUAWEI TECH CO LTD