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Preview picture generation method and device, hard disk video recorder and storage medium

A technology for previewing pictures and pictures, applied in the field of image processing, which can solve the problems of increasing the transmission bandwidth of the code stream, unable to effectively improve the display effect, and increasing the processing pressure of the hard disk video recorder, so as to reduce the transmission bandwidth of the code stream, save equipment performance, and meet the preview requirements effect of demand

Active Publication Date: 2020-06-19
HANGZHOU HIKVISION DIGITAL TECH
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Problems solved by technology

[0004] However, the inventor found in the research that in the actual image preview process, there will be situations where the resolution of the display device is smaller than the resolution of the synthesized picture. In this case, even if the resolution of the synthesized picture is high, the display effect cannot be effectively improved. And it will increase the bit stream transmission bandwidth and increase the processing pressure of the hard disk video recorder

Method used

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  • Preview picture generation method and device, hard disk video recorder and storage medium
  • Preview picture generation method and device, hard disk video recorder and storage medium
  • Preview picture generation method and device, hard disk video recorder and storage medium

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Embodiment Construction

[0054] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0055] First, the terms in the embodiments of the present application are explained.

[0056] ATM (Automatic Teller Machine, automatic teller machine) host: it is a dedicated hard disk video recorder based on coaxial high-definition transmission technology, applied to bank teller machines, and supports HDTVI (High Definition Transport Video Interface, high-definition video transmission interface) high-definition and ordinary analog camera mixing Access, and support simultaneous acce...

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Abstract

The embodiment of the invention provides a preview image generation method and device, a hard disk video recorder and a storage medium, and the method comprises the steps: obtaining the equipment resolution of display equipment connected with a specified output port, and obtaining the split screen information of a to-be-output preview image of the specified output port, and the split screen information represents the division condition of the split screen image in the preview image; determining a target resolution of each split screen picture in the preview picture according to the device resolution and the split screen information, the device resolution being positively correlated with the target resolution of each split screen picture; and generating an output code stream of the previewpicture according to the target resolution of each split screen picture. According to the preview image generation method provided by the embodiment of the invention, the resolution of the preview image is determined according to the equipment resolution and the split screen information, so that the code stream transmission bandwidth can be reduced, the processing pressure of the hard disk video recorder can be reduced, and the equipment performance consumed by preview can be greatly saved, thereby meeting the simultaneous preview requirement of multiple output ports and reducing the equipmentcost.

Description

technical field [0001] The present application relates to the technical field of image processing, in particular to a method and device for generating a preview image, a hard disk video recorder and a storage medium. Background technique [0002] Hard disk video recorders mainly include DVR (Digital Video Recorder, digital hard disk video recorder) and NVR (Network Video Recorder, network hard disk video recorder) and so on. The hard disk video recorder can process and output the image collected by the image acquisition device. [0003] In the related art, an image acquisition device, such as a network camera, etc., will output the acquired image as multiple code streams with different resolutions. After the hard disk video recorder receives the code stream of each image acquisition device, when outputting the synthesized picture, the hard disk video recorder determines which resolution code stream to use to form the synthesized picture according to the arrangement of each ...

Claims

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Application Information

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IPC IPC(8): H04N5/262H04N5/765
CPCH04N5/262H04N5/765
Inventor 吴兴良
Owner HANGZHOU HIKVISION DIGITAL TECH
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