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Interlace compressed display method and system for reducing video frame rate

A technology of video compression and display method, applied in the field of video processing, can solve the problems of reducing video resolution, unidentifiable monitoring object information, loss of motion information, etc., to achieve the effect of a wide range of application scenarios

Active Publication Date: 2015-04-29
HANGZHOU HIKVISION DIGITAL TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When using the method of increasing the video compression ratio, the compression ratio that can be achieved by a specific video compression standard (such as the H.264 / AVC compression standard that has been widely used at present) is limited by the rate-distortion curve. Excessive compression will lead to increased image distortion, which is obvious. reduce image quality
[0005] (2) Reduce video resolution
When the method of reducing the video resolution is adopted, the image details will be obviously lost, resulting in the unrecognizable information such as the monitoring object and reducing the practicality of monitoring
[0006] (3) Reduce video frame rate
However, when the frame extraction method of simply reducing the video frame rate is used, the smoothness of the video playback will be significantly reduced, and the image freeze will cause some motion information to be lost or give the viewer a sense of discomfort

Method used

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Embodiment Construction

[0032] In the following description, many technical details are proposed in order to enable readers to better understand this application. However, those of ordinary skill in the art can understand that even without these technical details and various changes and modifications based on the following embodiments, the technical solutions required by the claims of this application can be implemented.

[0033] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0034] The first embodiment of the present invention relates to an interlaced compression display method with reduced frame rate of video. In this embodiment, the frame images of the video are collected by a frame collecting device. The specific process is as follows Figure 4 Shown.

[0035] In step 401, it is judged whether the frame collection devi...

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Abstract

The invention relates to video processing and discloses an interlace compressed display method and an interlace compressed display system for reducing video frame rate. According to the invention, a field picture is selected every other X fields, wherein X is a positive even number, and video compressed encoding is performed only on the selected field picture, and thus, the field rate after field picture selection is 1 / (X+1) that before field picture selection. In addition, an interlace display device can match a de-interlacing algorithm to recover one frame picture from one field picture, so that the resolution and the fluency of displayed videos can be improved effectively under the condition that code rate bandwidth is limited.

Description

Technical field [0001] The present invention relates to video processing, and in particular to a technique for reducing video bandwidth in video processing. Background technique [0002] With the development of video capture and processing technology, the resolution adopted by the video surveillance system is getting larger and larger, especially with the application of large-resolution high-definition equipment such as 1080P / 1080I, the compression bit rate is getting higher and higher, which gives the image storage Brings a greater burden. At the same time, 3G wireless and other applications are becoming wider and wider, and low-bandwidth transmission has become one of the common requirements. Storage space and transmission bandwidth have gradually become the bottleneck of the entire monitoring application. Generally speaking, the storage space and transmission bandwidth required by the interlaced video system is less than that of the progressive scan, but the interlaced compr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/01H04N19/105H04N19/112H04N19/16H04N19/172H04N19/85
Inventor 俞海贾永华胡扬忠邬伟琪
Owner HANGZHOU HIKVISION DIGITAL TECH
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