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High-definition network camera intelligent code stream control method

A network camera, high-definition technology, used in image communication, TV, color TV components and other directions, can solve problems such as the increase of overall image coding and the sudden increase of dynamic picture video bandwidth.

Inactive Publication Date: 2017-12-08
SHANGHAI ANVIZ TECH CO LTD
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Problems solved by technology

[0004] At present, many methods have been proposed to solve this problem. According to the motion of the picture scene, the encoding is dynamically changed, the encoding quality is reduced in the static picture, and the encoding quality is improved in the dynamic picture. Although this method can reduce the transmission bandwidth, but due to the Some small movements will lead to a sudden increase in the overall image encoding, a sudden increase in the video bandwidth of dynamic images, and the encoding bandwidth of dynamic images is still high, even several times higher than that of static scenes

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  • High-definition network camera intelligent code stream control method

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Embodiment Construction

[0062] A specific embodiment of the present invention is a high-definition network camera intelligent stream control technology and method, including the following steps:

[0063] Step 1. Dynamically collect original YUV images to obtain real-time scene images;

[0064] Collect real-time original YUV data for image analysis. Due to the limited performance of the embedded system, a lower resolution image is used as the input image. The field of view of the image is consistent with the original image. Through low-resolution processing, the processing results are fed back to other original The resolution encoding channel can effectively reduce the processing time of the processor.

[0065] Step 2, using the improved difference algorithm to analyze the motion characteristics of the picture;

[0066] For the fixed monitoring environment, the multi-frame averaging method can be used to establish the background model. Within a certain period of time, the multi-frame images collected...

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Abstract

A high-definition network camera intelligent code stream control method comprises the following steps of: dynamically acquiring the original YUV image of a network camera and obtaining a real-time scene image; analyzing a screen motion characteristic by using an improved difference algorithm; processing by using morphology to remove noise information; locating a motion target; calculating a motion target area and fusing multiple motion areas; dynamically adjusting target area coding quality to improve the coding quality of the target area and to reduce the coding quality and the frame rate of non-target areas.

Description

technical field [0001] The invention belongs to the technical field of network video monitoring, and in particular relates to a high-definition network camera and an intelligent stream control method. Background technique [0002] In recent years, with the popularization of the concept of high-definition, high-definition and network-based video surveillance industries have become standard equipment. At the same time, household high-definition network cameras have gradually entered people's field of vision. The fluency is not ideal, and problems such as video freeze often occur. Although our network bandwidth has reached or even exceeded 100 megabytes, the fluency of video surveillance is still not ideal. Why is this? [0003] High-definition is accompanied by high transmission bandwidth. At the same time, due to the real-time and fluency requirements of surveillance video transmission, the requirements for transmission bandwidth are also greater. Due to the volatility of net...

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Application Information

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IPC IPC(8): H04N19/10H04N19/124H04N19/17H04N19/43H04N19/51H04N19/57H04N5/76
Inventor 许肖枫仇成林
Owner SHANGHAI ANVIZ TECH CO LTD
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