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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, increasing image distortion, inability to identify monitoring object information, etc., to achieve the effect of a wide range of application scenarios

Active Publication Date: 2012-09-19
HANGZHOU HIKVISION DIGITAL TECH
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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 the application. However, those skilled in the art can understand that without these technical details and various changes and modifications based on the following implementation modes, the technical solution claimed in each claim of the present application can be realized.

[0033] In order to make the purpose, technical solution and advantages of the present invention clearer, the following will further describe the implementation of the present invention in detail in conjunction with the accompanying drawings.

[0034] The first embodiment of the present invention relates to a video frame rate reduction interlaced compression display method. In this embodiment, the frame image of the video is collected by the frame acquisition device. The specific process is as follows Figure 4 shown.

[0035] In step 401, it is judged whether the frame acquisition 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 invention relates to video processing, in particular to the technology of reducing video bandwidth in video processing. Background technique [0002] With the development of video acquisition and processing technology, the resolution adopted by the video surveillance system is getting larger and larger, especially with the application of high-resolution high-definition equipment such as 1080P / 1080I, the compression bit rate is getting higher and higher, which makes image storage more difficult. posed a greater burden. At the same time, the range of applications such as 3G wireless is becoming wider and wider, and low-bandwidth transmission has also become one of the common requirements. Storage space and transmission bandwidth have gradually become the bottleneck of the entire monitoring application. Generally speaking, the interlaced scanning video system requires less storage space and transmission bandwidth than progressive scanning, but inter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N19/105H04N19/112H04N19/16H04N19/172H04N19/85
Inventor 俞海贾永华胡扬忠邬伟琪
Owner HANGZHOU HIKVISION DIGITAL TECH
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