WO2014086142A1 - 一种视频图像的处理方法及装置 - Google Patents

一种视频图像的处理方法及装置 Download PDF

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Publication number
WO2014086142A1
WO2014086142A1 PCT/CN2013/078933 CN2013078933W WO2014086142A1 WO 2014086142 A1 WO2014086142 A1 WO 2014086142A1 CN 2013078933 W CN2013078933 W CN 2013078933W WO 2014086142 A1 WO2014086142 A1 WO 2014086142A1
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WIPO (PCT)
Prior art keywords
video image
target area
code rate
rate
packet loss
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Ceased
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PCT/CN2013/078933
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English (en)
French (fr)
Inventor
林形省
汪轩然
武小军
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Xiaomi Inc
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Xiaomi Inc
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Priority to US14/102,944 priority Critical patent/US20140161199A1/en
Publication of WO2014086142A1 publication Critical patent/WO2014086142A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/236Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
    • H04N21/2365Multiplexing of several video streams
    • H04N21/23655Statistical multiplexing, e.g. by controlling the encoder to alter its bitrate to optimize the bandwidth utilization
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/234Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
    • H04N21/2343Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
    • H04N21/234345Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements the reformatting operation being performed only on part of the stream, e.g. a region of the image or a time segment
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/24Monitoring of processes or resources, e.g. monitoring of server load, available bandwidth, upstream requests
    • H04N21/2402Monitoring of the downstream path of the transmission network, e.g. bandwidth available

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a video image processing method and apparatus. Background technique
  • video image compression coding is a very important technology. It is well known that digital video images have a huge amount of data. Without compression, the high transmission rate required for transmission and the huge capacity required for storage will become huge. The problem. Therefore, the video data is divided into one packet for transmission in the network, and each packet contains a frame indicating data information and providing data routing.
  • the propagation of data packets in general media is always a small part due to the loss of the distance between the two terminals.
  • the so-called network packet loss rate is the ratio of the packet loss part to the total number of transmitted packets. The network packet loss rate should be controlled within a certain range during normal transmission.
  • the embodiment of the invention provides a method and a device for processing a video image, which are used to ensure that the definition of the video area that needs to be highlighted meets the requirements during video transmission, and achieves smooth video communication.
  • the video image of the predetermined target area is processed by the first code rate, and the video image of the non-target area is processed by the second code rate.
  • a detecting module configured to detect a packet loss rate of a current video image transmission
  • a processing module configured to: when the packet loss rate is greater than a packet loss threshold, process the video image of the predetermined target area by using a first code rate, and process the video image of the non-target area by using a second code rate.
  • inventions of the present invention include: The method and device for processing a video image according to an embodiment of the present invention are used to detect a packet loss rate of a current video image transmission; when the packet loss rate is greater than a packet loss threshold, the video image of the predetermined target area is used by the first code. Rate processing, the video image of the non-target area is processed by the second code rate.
  • the method and device for processing a video image according to an embodiment of the present invention divides a video image into a target area and a non-target area, and adopts different code rates for different areas, so that priority is ensured when resources such as network bandwidth are limited. Need to highlight the clarity of the video area to meet the requirements, to achieve smooth video communication. At the same time, the low code rate is adopted for non-important areas to reduce the packet loss rate.
  • FIG. 1 is a flowchart of a method for processing a video image according to Embodiment 1 of the present invention
  • FIG. 2 is a flowchart of a method for processing a video image according to Embodiment 2 of the present invention
  • FIG. 3 is a flowchart of a method for processing a video image according to Embodiment 3 of the present invention.
  • 4a to 4c are schematic views of a target area in an embodiment of the present invention.
  • FIG. 5 is a flowchart of a process of processing a video image of a target area according to Embodiment 4 of the present invention by using a first rate processing, and processing a video image of a non-target area by using a second code rate;
  • FIG. 6 is a flowchart of a method for processing a video image according to Embodiment 5 of the present invention.
  • FIG. 7 is a schematic diagram showing the virtual structure of a video image processing apparatus according to Embodiment 6 of the present invention. detailed description
  • the method for processing a video image provided by the embodiment of the present invention, as shown in FIG. 1 specifically includes the following steps:
  • Step 101 Detect a packet loss rate of a current video image transmission
  • Step 102 When the packet loss rate is greater than the packet loss threshold, the video image of the predetermined target area is processed by the first code rate, and the video image of the non-target area is processed by the second code rate.
  • the code rate is the number of data bits transmitted per unit time during data transmission.
  • the general unit is kbps or thousands of bits per second.
  • the code rate is proportional to the quality of the video image, and the volume of the transmitted file is also proportional to the code rate.
  • the video image may be acquired by the terminal camera, and the video image may be obtained by other means, such as a video image saved locally by the terminal or a video image downloaded from a server.
  • the video image before detecting a packet loss rate of the current video image transmission, is transmitted according to a default code rate, where the default code rate is not higher than a larger one of the first code rate and the second code rate.
  • the code rate is higher than the smaller code rate of the first code rate and the second code rate.
  • the packet loss rate of the video image currently transmitted at the default bit rate is detected.
  • the target area is an important area that needs to be highlighted, in order to ensure the definition of the target area in the case where resources such as network bandwidth are limited, the code rate of the video image of the non-target area is lowered.
  • the code rate of the video image of the target area can also be increased, that is, the first code rate is greater than the second code rate.
  • the default code rate is not higher than the first code rate and higher than the second code rate.
  • the second code rate is greater than the first code rate, and the default code rate is not higher than the second code rate and higher than the first code rate.
  • the video image before detecting the packet loss rate of the current video image transmission, is divided into a video image of the target area and a video image of the non-target area, and respectively transmitted by using different communication transmission channels.
  • the packet loss ratios of the two communication transmission channels are respectively detected, and the average value is taken as the packet loss rate of the current video image transmission; or when the video images of the target area and the non-target area are used with the same code rate, the detection is performed.
  • the packet loss rate of a communication transmission channel is used as the packet loss rate of the current video image transmission.
  • the location and size of the target area is determined by an input parameter configuration, a default parameter configuration, or an adaptive algorithm. For example, it is determined according to the shape of the user's swipe on the screen of the terminal; or preset default parameter configuration such as a circular area with the plane center as the origin and radius a; or determined by an adaptive algorithm such as face recognition technology .
  • the video image of the predetermined target area is processed by the first rate
  • the video image of the non-target area is processed by the second code rate, including: acquiring a predetermined first code rate, and The video image of the area is processed by the first code rate; when the code rate of the video image of the non-target area is reduced, and the packet loss rate of the current video image transmission is not greater than the packet loss threshold, the current video image of the non-target area is used.
  • the code rate is determined to be the second code rate; the video image of the non-target area is processed using the second code rate.
  • the method further includes: the target processed by using the first code rate a video image of the area, and a video image of the non-target area processed by the second code rate, synthesized and transmitted to the terminal that receives the video image; or a video image of the target area processed by the first code rate, and adopted
  • the video image of the non-target area after the second code rate processing is directly transmitted to the terminal that receives the video image. If the video image is directly transmitted without being synthesized, the image is synthesized on the terminal side of the received video image and then displayed.
  • the video image processing method provided by the embodiment of the present invention divides the video image into a target area and a non-target area, and adopts different code rates for different areas, so that resources such as network bandwidth are limited.
  • priority is given to ensuring that the definition of the video area that needs to be highlighted meets the requirements, and the smooth communication of the video is achieved.
  • the low code rate is adopted for non-important areas to reduce the packet loss rate.
  • the method provided by the embodiment of the present invention may divide a video image into a video image of a target area and a video image of a non-target area in advance, and respectively establish a communication transmission channel by using a software program; or when the packet loss rate is greater than a packet loss threshold, The video image of the target area is distinguished from the video image of the non-target area.
  • the number of target areas and non-target areas can be more than one.
  • the method provided by the embodiment of the present invention when the packet loss rate is greater than the packet loss threshold, and then distinguishes the video image of the target area from the video image of the non-target area, as shown in FIG. 2, the following steps are included:
  • Step 201 Collect a video image through the terminal camera. Taking a video call as an example, after the user starts the video call, the terminal turns on the camera to collect the video image.
  • Step 202 Transmit the video image according to a default code rate
  • Step 203 Detect a packet loss rate of a video image currently transmitted according to a default code rate. When the packet loss rate is greater than a packet loss threshold, perform step 204; otherwise, continue to detect.
  • Step 204 The video image of the predetermined target area is processed by the first code rate, and the video image of the non-target area is processed by the second code rate.
  • the default code rate is not higher than the larger code rate of the first code rate and the second code rate and higher than the smaller of the first code rate and the second code rate. That is, the bit rate of the video image is raised to ensure the high quality and clarity of the video image in the target area; at the same time, the video image of the non-target area is reduced by the code rate due to the limitation of the network environment such as bandwidth, and the image is further blurred. Ensure the high quality and clarity of the video image in the target area.
  • the method provided by the embodiment of the present invention will display a video image. Divided into target area and non-target area, and adopt different code rates for different areas, so that in the case of limited resources such as network bandwidth, priority is given to ensuring that the definition of the highlighted video area meets the requirements, and the video communication is smooth. At the same time, low-rate is adopted for non-important areas to reduce the packet loss rate.
  • Step 301 Collecting a video image through a terminal camera; taking a video call as an example, after the user starts the video call, the terminal turns on the camera to collect the video image;
  • Step 302 Divide the video image into a video image of the target area and a video image of the non-target area, and transmit the data separately by using different communication transmission channels;
  • Step 303 Detect a packet loss rate of the current video image transmission; where, respectively, detecting a packet loss rate of the two communication transmission channels, and taking an average value as a packet loss rate of the current video image transmission; or a video of the target area and the non-target area
  • the packet loss rate of any communication transmission channel is detected as the packet loss rate of the current video image transmission.
  • step 304 is performed; otherwise, the detection is continued.
  • Step 304 The video image of the predetermined target area is processed by the first code rate, and the video image of the non-target area is processed by the second code rate. Increase the bit rate of the video image to ensure the high quality and sharpness of the video image in the target area. At the same time, due to the limitation of the network environment such as bandwidth, the video image of the non-target area is reduced in code rate, and the image is blurred to further ensure the target area. The high quality, clarity of the video image.
  • the position and size of the target area are determined by an input parameter configuration, a default parameter configuration, or an adaptive algorithm.
  • the user swipes on the screen of the terminal to form a rectangle (shown by a broken line in the figure), and the terminal can determine that the area enclosed by the rectangle is the target area; as shown in FIG. 4b, Set the default parameter configuration such as a circular area with the plane center as the origin and radius a (shown by the dotted line in the figure); as shown in Figure 4c, through the face recognition technology, the face area is identified, and the area is determined as target area.
  • the first code rate may be preset, when the video image needs to be adjusted, such as When the packet loss rate is too large, the first code rate is directly obtained, and the video image of the target area is processed according to the first code rate.
  • Step 502 Reduce the code rate of the video image in the non-target area; reduce the code rate of the video image in the non-target area, reduce the code rate of the video image in the target area, and reduce the content of the video image in the target area.
  • the resources occupied by some video images Since the video image displayed in the non-target area is generally a non-important information area confirmed by the user, even if the partial video image is blurred, the user's use is not affected.
  • Step 503 detecting a packet loss rate of the current video image transmission; when the packet loss rate is not greater than the packet loss threshold, performing step 504; otherwise, performing step 502;
  • Step 504 Determine a current code rate adopted by the video image of the non-target area as the second code rate, and process the video image of the non-target area by using the second code rate.
  • the video image of the predetermined target area is processed by the first code rate
  • the target processed by the first rate may be used.
  • the video image of the non-target area after the second code rate processing is directly transmitted to the terminal that receives the video image.
  • Step 601 Collect a video image by using the terminal A camera
  • Step 602 The terminal A determines the face area as the target area by using the face recognition technology.
  • Step 603 The terminal A divides the video image into a video image of the target area and a video image of the non-target area, and uses different communication transmission channels respectively. Transmission
  • Step 604 the terminal A detects the packet loss rate of any communication transmission channel as the packet loss rate of the current video image transmission; when the packet loss rate is greater than the packet loss threshold, step 605 is performed; otherwise, the video image is transmitted to the terminal B, and the execution is performed. Step 610.
  • the packet loss rate of a communication transmission channel can be detected. If the image is at the end At the end A, there is only one communication transmission channel between the terminal A and the terminal B.
  • Step 605 The terminal A acquires a predetermined first code rate, and processes the video image of the target area by using a first code rate.
  • Step 606 The terminal A reduces a code rate of the video image of the non-target area.
  • Step 607 the terminal A detects the packet loss rate of the current video image transmission again; when the packet loss rate is not greater than the packet loss threshold, step 608 is performed; otherwise, step 606 is performed;
  • Step 608 The terminal A determines a current code rate used by the video image of the non-target area as the second code rate, and processes the video image of the non-target area by using the second code rate.
  • Step 609 The terminal A combines the video image of the target area processed by the first code rate and the video image of the non-target area processed by the second code rate, and sends the video image to the terminal B.
  • Step 610 the terminal B displays Received video image.
  • the video image processing method provided by the embodiment of the present invention divides the video image into a target area and a non-target area, and adopts different code rates for different areas, so that resources such as network bandwidth are limited.
  • priority is given to ensuring that the definition of the video area that needs to be highlighted meets the requirements, and the smooth communication of the video is achieved.
  • the low code rate is adopted for non-important areas to reduce the packet loss rate.
  • an embodiment of the present invention further provides a processing device for processing a video image of a short message. Since the principle of solving the problem is similar to the processing method of the foregoing video image, the implementation of the device can be referred to the method. Implementation, repetition will not be repeated.
  • a video image processing apparatus includes: a detecting module 701, configured to detect a packet loss rate of a current video image transmission;
  • the processing module 702 is configured to: when the packet loss rate is greater than a packet loss threshold, process the video image of the predetermined target area by using a first rate, and process the video image of the non-target area by using a second rate.
  • the processing device further includes:
  • the acquiring module 703 is configured to collect the video image by using a terminal camera.
  • the processing device further includes:
  • the transmission module 704 is configured to transmit the video image according to a default code rate, where the default code rate is not higher than a larger code rate of the first code rate and the second code rate, and is higher than the first code Rate and second The smaller of the code rates; or the video image is divided into a video image of the target area and a video image of the non-target area, and respectively transmitted by using different communication transmission channels.
  • the detecting module 701 detects a packet loss rate of a video image currently transmitted according to a default code rate
  • the detecting module 701 detects the packet loss of the two communication transmission channels respectively. Rate, and take the average value as the packet loss rate of the current video image transmission; or when the video images of the target area and the non-target area adopt the same code rate, detect the packet loss rate of any communication transmission channel as the current video image transmission loss. Package rate.
  • the processing device further includes:
  • the determining module 705 is configured to determine the location and size of the target area by using an input parameter configuration, a default parameter configuration, or an adaptive algorithm.
  • the processing module 702 is further configured to: acquire a predetermined first code rate, process the video image of the target area by using a first code rate; reduce a code rate of the video image of the non-target area, and detect When the packet loss rate of the current video image transmission is not greater than the packet loss threshold, the current code rate used by the video image of the non-target area is determined as the second code rate; and the video image of the non-target area is used to adopt the second code rate. deal with.
  • the processing device further includes:
  • the synthesizing module 706 is configured to synthesize the video image of the target area processed by the first rate and the video image of the non-target area processed by the second rate.
  • the video image processing method and apparatus provided by the embodiments of the present invention divide the video image into a target area and a non-target area, and adopt different code rates for different areas, so that resources such as network bandwidth are limited.
  • priority is given to ensuring that the definition of the video area that needs to be highlighted meets the requirements, and the smooth communication of the video is achieved.
  • the low code rate is adopted for non-important areas to reduce the packet loss rate.
  • the embodiments of the present invention may be implemented by hardware, or may be implemented by means of software plus a necessary general hardware platform.
  • the technical solution of the embodiment of the present invention may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (which may be a CD-ROM, a USB flash drive, a mobile hard disk, etc.).
  • a non-volatile storage medium which may be a CD-ROM, a USB flash drive, a mobile hard disk, etc.
  • Including several instructions to make a computer device can be a A human computer, server, or network device, etc., performs the methods described in various embodiments of the present invention.
  • the drawings are only schematic diagrams of one embodiment, and the modules or processes in the drawings are not necessarily required to implement the invention.
  • modules in the apparatus in the embodiments may be distributed in the apparatus according to the embodiments, or may be correspondingly changed in one or more apparatuses different from the embodiment.
  • the modules of the above embodiments may be combined into one module, or may be further split into a plurality of sub-modules.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

本发明实施例公开了一种视频图像的处理方法及装置,该方法包括:检测当前视频图像传输的丢包率;当所述丢包率大于丢包阈值时,将预定的目标区域的视频图像采用第一码率处理,将非目标区域的视频图像采用第二码率处理。本发明实施例提供的视频图像的处理方法及装置,通过将视频图像划分为目标区域和非目标区域,并对不同区域采用不同的码率,使得在网络带宽等资源有限的情况下,优先确保需要突出的视频区域清晰度满足要求,达到视频沟通流畅的效果。同时,对非重要的区域采用低码率,降低丢包率。

Description

一种视频图像的处理方法及装置 技术领域
本发明涉及通讯技术领域, 尤其涉及一种视频图像的处理方法及装置。 背景技术
在通讯技术迅速发展的今天, 手机已经成为绝大多数人每天工作和生活 的必需品, 利用手机进行视频沟通是目前流行的沟通方式。
在多媒体通信中,视频图像压缩编码是一项非常重要的技术,众所周知, 数字视频图像的数据量巨大, 若不进行压缩, 其传输所需的高传输速率和存 储所需的巨大容量将成为巨大的问题。 因此, 视频数据在网络中被分成一个 个数据包进行传输, 每个数据包中有表示数据信息和提供数据路由的帧。 而 数据包在一般介质中传播是总有一小部分由于两个终端的距离过大会丢失。 所谓网络丢包率是数据包丢失部分与所传数据包总数的比值, 正常传输时网 络丢包率应该控制在一定范围内。
然而, 在现实的数字通信中, 带宽资源有限, 当网络环境不佳时, 丢包 率上升导致接收视频的终端上该视频显示的画面不完整或不清晰。 发明内容
本发明实施例提供了一种视频图像的处理方法及装置, 用以视频传输时 确保需要突出的视频区域清晰度满足要求, 达到视频沟通流畅的效果。
本发明实施例提供的一种视频图像的处理方法, 包括:
检测当前视频图像传输的丢包率;
当所述丢包率大于丢包阈值时, 将预定的目标区域的视频图像采用第一 码率处理, 将非目标区域的视频图像采用第二码率处理。
本发明实施例提供的一种视频图像的处理装置, 包括:
检测模块, 用于检测当前视频图像传输的丢包率;
处理模块, 用于当所述丢包率大于丢包阈值时, 将预定的目标区域的视 频图像采用第一码率处理, 将非目标区域的视频图像采用第二码率处理。
本发明实施例的有益效果包括: 本发明实施例提供的视频图像的处理方法及装置, 用于检测当前视频图 像传输的丢包率; 当所述丢包率大于丢包阈值时, 将预定的目标区域的视频 图像采用第一码率处理, 将非目标区域的视频图像采用第二码率处理。 本发 明实施例提供的视频图像的处理方法及装置, 通过将视频图像划分为目标区 域和非目标区域, 并对不同区域采用不同的码率, 使得在网络带宽等资源有 限的情况下, 优先确保需要突出的视频区域清晰度满足要求, 达到视频沟通 流畅的效果。 同时, 对非重要的区域采用低码率, 降低丢包率。 附图说明
图 1为本发明实施例 1提供的视频图像的处理方法流程图;
图 2为本发明实施例 2提供的视频图像的处理方法流程图;
图 3为本发明实施例 3提供的视频图像的处理方法流程图;
图 4a至图 4c为本发明实施例中目标区域的示意图;
图 5为本发明实施例 4提供的目标区域的视频图像采用第一码率处理、 非目标区域的视频图像采用第二码率处理的过程流程图;
图 6为本发明实施例 5提供的视频图像的处理方法流程图;
图 7为本发明实施例 6提供的视频图像的处理装置虚拟结构示意图。 具体实施方式
下面结合附图, 对本发明实施例提供的处理短信的方法及装置的具体实 施方式进行详细地说明。
实施例 1
本发明实施例提供的视频图像的处理方法, 如图 1所示, 具体包括以下 步骤:
步骤 101、 检测当前视频图像传输的丢包率;
步骤 102、 当丢包率大于丢包阈值时, 将预定的目标区域的视频图像采 用第一码率处理, 将非目标区域的视频图像采用第二码率处理。
其中, 码率就是数据传输时单位时间传送的数据位数,一般单位是 kbps 即千位每秒。 码率和视频图像的质量成正比, 传输的文件体积也和码率成正 比。 较佳地, 在一个实施例中, 可以通过终端摄像头采集视频图像, 还可以 通过其他途径获得视频图像, 如终端本地保存的视频图像或者从服务器上下 载的视频图像。
较佳地, 在一个实施例中, 检测当前视频图像传输的丢包率之前, 将视 频图像按照默认码率传输, 该默认码率不高于第一码率和第二码率中较大的 码率且高于第一码率和第二码率中较小的码率。 这种情况下, 检测当前按照 默认码率传输的视频图像的丢包率。 当目标区域为需要突出的重要区域时, 为了在网络带宽等资源有限的情况下, 确保目标区域的清晰度, 则将非目标 区域的视频图像的码率降低。 同时, 也可以将目标区域的视频图像的码率提 高, 即第一码率大于第二码率。 此时, 默认码率不高于第一码率且高于第二 码率。 同理, 当当非目标区域为需要突出的重要区域时, 第二码率大于第一 码率, 默认码率不高于第二码率且高于第一码率。
较佳地, 在一个实施例中, 检测当前视频图像传输的丢包率之前, 将视 频图像分为目标区域的视频图像和非目标区域的视频图像, 并采用不同通信 传输通道分别传输。 这种情况下, 分别检测两个通信传输通道的丢包率, 并 取均值作为当前视频图像传输的丢包率; 或者当目标区域和非目标区域的视 频图像采用的码率相同时,检测任一通信传输通道的丢包率作为当前视频图 像传输的丢包率。
较佳地, 在一个实施例中, 通过输入参数配置、 默认参数配置或者自适 应算法确定目标区域的位置及大小。 例如, 根据用户在终端屏幕上的划动构 成的形状来确定; 或者预先设定默认参数配置如以平面中心为原点、 半径为 a的圆形区域; 或者通过人脸识别技术等自适应算法确定。
较佳地, 在一个实施例中, 将预定的目标区域的视频图像采用第一码率 处理、 非目标区域的视频图像采用第二码率处理, 包括: 获取预定的第一码 率, 将目标区域的视频图像采用第一码率处理; 降低非目标区域的视频图像 的码率, 并检测到当前视频图像传输的丢包率不大于丢包阈值时, 将非目标 区域的视频图像采用的当前码率确定为第二码率; 将非目标区域的视频图像 采用第二码率处理。
较佳地, 将预定的目标区域的视频图像采用第一码率处理、 非目标区域 的视频图像采用第二码率处理之后, 还包括: 将采用第一码率处理后的目标 区域的视频图像、 和采用第二码率处理后的非目标区域的视频图像, 进行合 成并发送到接收视频图像的终端; 或者将采用第一码率处理后的目标区域的 视频图像、 和采用第二码率处理后的非目标区域的视频图像直接发送到接收 视频图像的终端。 若未合成直接发送视频图像, 则在接收视频图像的终端侧 进行图像合成后再展示。
通过上述描述可以看出, 本发明实施例提供的视频图像的处理方法, 将 视频图像划分为目标区域和非目标区域, 并对不同区域采用不同的码率, 使 得在网络带宽等资源有限的情况下, 优先确保需要突出的视频区域清晰度满 足要求, 达到视频沟通流畅的效果。 同时, 对非重要的区域采用低码率, 降 低丢包率。
本发明实施例提供的方法可以预先将视频图像划分为目标区域的视频 图像和非目标区域的视频图像, 分别通过软件程序建立通信传输通道; 也可 以在丢包率大于丢包阈值时, 再对目标区域的视频图像和非目标区域的视频 图像进行区分。 其中, 目标区域和非目标区域的数目均可以不止一个。
实施例 2
本发明实施例提供的方法, 在丢包率大于丢包阈值时, 再对目标区域的 视频图像和非目标区域的视频图像进行区分的情况下, 如图 2所示, 包括以 下步骤:
步骤 201、 通过终端摄像头采集视频图像; 以视频通话为例, 用户开启 视频通话后, 终端开启摄像头采集视频图像。
步骤 202、 将视频图像按照默认码率传输;
步骤 203、 检测当前按照默认码率传输的视频图像的丢包率; 当丢包率 大于丢包阈值时, 执行步骤 204; 否则, 继续检测。
步骤 204、 将预定的目标区域的视频图像采用第一码率处理, 将非目标 区域的视频图像采用第二码率处理。 其中, 默认码率不高于第一码率和第二 码率中较大的码率且高于第一码率和第二码率中较小的码。 也就是, 将视频 图像的码率调高, 确保目标区域的视频图像的高质量、 清晰度; 同时由于带 宽等网络环境的限制, 将非目标区域的视频图像降低码率, 虚化图像, 进一 步确保目标区域的视频图像的高质量、 清晰度。
通过本实施例的描述可以看出, 本发明实施例提供的方法, 将视频图像 划分为目标区域和非目标区域, 并对不同区域采用不同的码率, 使得在网络 带宽等资源有限的情况下, 优先确保需要突出的视频区域清晰度满足要求, 达到视频沟通流畅的效果。 同时,对非重要的区域采用低码率, 降低丢包率。
实施例 3
本发明实施例提供的方法, 在预先将视频图像划分为目标区域的视频图 像和非目标区域的视频图像, 分别通过软件程序建立通信传输通道的情况 下, 如图 3所示, 包括以下步骤:
步骤 301、 通过终端摄像头采集视频图像; 以视频通话为例, 用户开启 视频通话后, 终端开启摄像头采集视频图像;
步骤 302、 将视频图像分为目标区域的视频图像和非目标区域的视频图 像, 并采用不同通信传输通道分别传输;
步骤 303、 检测当前视频图像传输的丢包率; 其中, 分别检测两个通信 传输通道的丢包率, 并取均值作为当前视频图像传输的丢包率; 或者当目标 区域和非目标区域的视频图像采用的码率相同时,检测任一通信传输通道的 丢包率作为当前视频图像传输的丢包率。 当丢包率大于丢包阈值时, 执行步 骤 304; 否则, 继续检测。
步骤 304、 将预定的目标区域的视频图像采用第一码率处理, 将非目标 区域的视频图像采用第二码率处理。 将视频图像的码率调高, 确保目标区域 的视频图像的高质量、 清晰度; 同时由于带宽等网络环境的限制, 将非目标 区域的视频图像降低码率, 虚化图像, 进一步确保目标区域的视频图像的高 质量、 清晰度。
上述实施例 2和实施例 3中通过输入参数配置、 默认参数配置或者自适 应算法确定目标区域的位置及大小。 如图 4a所示, 用户在终端屏幕上的划 动, 形成了一个矩形 (图中虚线所示) , 终端即可确定出该矩形所围成的区 域为目标区域; 如图 4b所示, 预先设定默认参数配置如以平面中心为原点、 半径为 a的圆形区域 (图中虚线所示) ; 如图 4c所示, 通过人脸识别技术, 识别出人脸区域, 将该区域确定为目标区域。
实施例 4
上述实施例 2步骤 204和实施例 3步骤 304 , 在实现时如图 5所示, 包 括以下步骤: 步骤 501、 获取预定的第一码率, 将目标区域的视频图像采用第一码率 处理; 为了确保目标区域的清晰度, 可以预先设置第一码率, 当需要对视频 图像进行调节时, 如丢包率过大时, 直接获取该第一码率, 并按照该第一码 率对目标区域的视频图像进行处理。
步骤 502、 降低非目标区域的视频图像的码率; 由于网络带宽等资源有 限, 在确保目标区域视频图像清晰的前提下, 降低非目标区域的视频图像的 码率, 进行虚化模糊, 降低这部分视频图像占用的资源。 由于非目标区域显 示的视频图像一般为用户确认的非重要信息区域, 所以即使该部分视频图像 模糊, 也不影响用户的使用。
步骤 503、 检测当前视频图像传输的丢包率; 当丢包率不大于丢包阈值 时, 执行步骤 504; 否则, 执行步骤 502;
步骤 504、 将非目标区域的视频图像采用的当前码率确定为第二码率, 将非目标区域的视频图像采用第二码率处理。
实施例 5
在实施例 1至实施例 4中将预定的目标区域的视频图像采用第一码率处 理, 将非目标区域的视频图像采用第二码率处理后, 可以将采用第一码率处 理后的目标区域的视频图像、 和采用第二码率处理后的非目标区域的视频图 像, 进行合成并发送到接收视频图像的终端; 或者将采用第一码率处理后的 目标区域的视频图像、 和采用第二码率处理后的非目标区域的视频图像直接 发送到接收视频图像的终端。
如图 6所示,假设终端 A和终端 B之间建立了视频通话,包括以下步骤: 步骤 601、 通过终端 A摄像头采集视频图像;
步骤 602、 终端 A通过人脸识别技术, 将人脸区域确定为目标区域; 步骤 603、 终端 A将视频图像分为目标区域的视频图像和非目标区域的 视频图像, 并采用不同通信传输通道分别传输;
步骤 604、 终端 A检测任一通信传输通道的丢包率作为当前视频图像传 输的丢包率; 当丢包率大于丢包阈值时, 执行步骤 605; 否则, 将视频图像 传输到终端 B, 执行步骤 610。
由于当目标区域和非目标区域的视频图像采用的码率相同, 因此, 当图 像是在终端 B处合成时,检测一通信传输通道的丢包率即可。 若图像是在终 端 A处合成, 那么终端 A与终端 B之间的通信传输通道仅有一个。
步骤 605、 终端 A获取预定的第一码率, 将目标区域的视频图像采用第 一码率处理;
步骤 606、 终端 A降低非目标区域的视频图像的码率;
步骤 607、 终端 A再次检测当前视频图像传输的丢包率; 当丢包率不大 于丢包阈值时, 执行步骤 608; 否则, 执行步骤 606;
步骤 608、 终端 A将非目标区域的视频图像采用的当前码率确定为第二 码率, 将非目标区域的视频图像采用第二码率处理;
步骤 609、 终端 A将采用第一码率处理后的目标区域的视频图像、 和采 用第二码率处理后的非目标区域的视频图像, 进行合成并发送到终端 B; 步骤 610、 终端 B显示接收到的视频图像。
通过上述实施例的描述可知, 本发明实施例提供的视频图像的处理方 法, 将视频图像划分为目标区域和非目标区域, 并对不同区域采用不同的码 率, 使得在网络带宽等资源有限的情况下, 优先确保需要突出的视频区域清 晰度满足要求, 达到视频沟通流畅的效果。 同时, 对非重要的区域采用低码 率, 降低丢包率。
实施例 6
基于同一发明构思, 本发明实施例还提供了一种处理短信的视频图像的 处理装置, 由于该装置解决问题的原理与前述一种视频图像的处理方法相 似, 因此该装置的实施可以参见方法的实施, 重复之处不再赘述。
本发明实施例提供的一种视频图像的处理装置, 如图 7所示, 包括: 检测模块 701 , 用于检测当前视频图像传输的丢包率;
处理模块 702 , 用于当所述丢包率大于丢包阈值时, 将预定的目标区域 的视频图像采用第一码率处理, 将非目标区域的视频图像采用第二码率处 理。
较佳地, 处理装置还包括:
采集模块 703 , 用于通过终端摄像头采集所述视频图像。
较佳地, 处理装置还包括:
传输模块 704, 用于将所述视频图像按照默认码率传输, 所述默认码率 不高于所述第一码率和第二码率中较大的码率且高于所述第一码率和第二 码率中较小的码; 或者将所述视频图像分为目标区域的视频图像和非目标区 域的视频图像, 并采用不同通信传输通道分别传输。
较佳地, 所述传输模块 704将所述视频图像按照默认码率传输时, 所述 检测模块 701检测当前按照默认码率传输的视频图像的丢包率;
所述传输模块 704将所述视频图像分为目标区域的视频图像和非目标区 域的视频图像, 并采用不同通信传输通道分别传输时, 所述检测模块 701分 别检测两个通信传输通道的丢包率, 并取均值作为当前视频图像传输的丢包 率; 或者当目标区域和非目标区域的视频图像采用的码率相同时, 检测任一 通信传输通道的丢包率作为当前视频图像传输的丢包率。
较佳地, 所述处理装置还包括:
确定模块 705 , 用于通过输入参数配置、 默认参数配置或者自适应算法 确定所述目标区域的位置及大小。
较佳地, 所述处理模块 702 , 还用于获取预定的第一码率, 将所述目标 区域的视频图像采用第一码率处理; 降低非目标区域的视频图像的码率, 并 检测到当前视频图像传输的丢包率不大于丢包阈值时, 将所述非目标区域的 视频图像采用的当前码率确定为第二码率; 将所述非目标区域的视频图像采 用第二码率处理。
较佳地, 所述处理装置还包括:
合成模块 706,用于将所述采用第一码率处理后的目标区域的视频图像、 和采用第二码率处理后的非目标区域的视频图像, 进行合成。
通过上述描述可知, 本发明实施例提供的视频图像的处理方法及装置, 将视频图像划分为目标区域和非目标区域, 并对不同区域采用不同的码率, 使得在网络带宽等资源有限的情况下, 优先确保需要突出的视频区域清晰度 满足要求, 达到视频沟通流畅的效果。 同时, 对非重要的区域采用低码率, 降低丢包率。
通过以上的实施方式的描述, 本领域的技术人员可以清楚地了解到本发 明实施例可以通过硬件实现, 也可以借助软件加必要的通用硬件平台的方式 来实现。 基于这样的理解, 本发明实施例的技术方案可以以软件产品的形式 体现出来,该软件产品可以存储在一个非易失性存储介质(可以是 CD-ROM, U盘, 移动硬盘等) 中, 包括若干指令用以使得一台计算机设备(可以是个 人计算机, 服务器, 或者网络设备等)执行本发明各个实施例所述的方法。 本领域技术人员可以理解附图只是一个实施例的示意图, 附图中的模块 或流程并不一定是实施本发明所必须的。
本领域技术人员可以理解实施例中的装置中的模块可以按照实施例描 述进行分布于实施例的装置中,也可以进行相应变化位于不同于本实施例的 一个或多个装置中。 上述实施例的模块可以合并为一个模块, 也可以进一步 拆分成多个子模块。
上述本发明实施例序号仅仅为了描述, 不代表实施例的优劣。 发明的精神和范围。 这样, 倘若本发明的这些修改和变型属于本发明权利要 求及其等同技术的范围之内, 则本发明也意图包含这些改动和变型在内。

Claims

权利要求
1、 一种视频图像的处理方法, 其中, 包括:
检测当前视频图像传输的丢包率;
当所述丢包率大于丢包阈值时, 将预定的目标区域的视频图像采用第一 码率处理, 将非目标区域的视频图像采用第二码率处理。
2、 根据权利要求 1 所述的处理方法, 其中, 所述方法还包括: 通过终 端摄像头采集所述视频图像。
3、 根据权利要求 1或 2所述的处理方法, 其中, 所述检测当前视频图 像传输的丢包率之前, 还包括:
将所述视频图像按照默认码率传输, 所述默认码率不高于所述第一码率 和第二码率中较大的码率且高于所述第一码率和第二码率中较小的码率; 所述检测当前视频图像传输的丢包率, 包括:
检测当前按照默认码率传输的视频图像的丢包率。
4、 根据权利要求 1或 2所述的处理方法, 其中, 所述检测当前视频图 像传输的丢包率之前, 还包括:
将所述视频图像分为目标区域的视频图像和非目标区域的视频图像, 并 采用不同通信传输通道分别传输;
所述检测当前视频图像传输的丢包率, 包括:
分别检测两个通信传输通道的丢包率, 并取均值作为当前视频图像传输 的丢包率; 或者当目标区域和非目标区域的视频图像采用的码率相同时, 检 测任一通信传输通道的丢包率作为当前视频图像传输的丢包率。
5、 根据权利要求 1或 2或 4所述的处理方法, 其中,
通过输入参数配置、 默认参数配置或者自适应算法确定所述目标区域的 位置及大小。
6、根据权利要求 1-5任一权利要求所述的处理方法, 其中, 所述将预定 的目标区域的视频图像采用第一码率处理、 非目标区域的视频图像采用第二 码率处理, 包括:
获取预定的第一码率, 将所述目标区域的视频图像采用第一码率处理; 降低非目标区域的视频图像的码率, 并检测到当前视频图像传输的丢包 率不大于丢包阈值时, 将所述非目标区域的视频图像采用的当前码率确定为 第二码率;
将所述非目标区域的视频图像采用第二码率处理。
7、 根据权利要求 1或 6所述的处理方法, 其中, 所述将预定的目标区 域的视频图像采用第一码率处理、 非目标区域的视频图像采用第二码率处理 之后, 还包括:
将所述采用第一码率处理后的目标区域的视频图像、 和采用第二码率处 理后的非目标区域的视频图像, 进行合成并发送到接收视频图像的终端; 或 者
将所述采用第一码率处理后的目标区域的视频图像、 和采用第二码率处 理后的非目标区域的视频图像直接发送到接收视频图像的终端。
8、 一种视频图像的处理装置, 其中, 所述处理装置包括:
检测模块, 用于检测当前视频图像传输的丢包率;
处理模块, 用于当所述丢包率大于丢包阈值时, 将预定的目标区域的视 频图像采用第一码率处理, 将非目标区域的视频图像采用第二码率处理。
9、 根据权利要求 8所述的处理装置, 其中, 所述处理装置还包括: 采集模块, 用于通过终端摄像头采集所述视频图像。
10、根据权利要求 8或 9所述的处理装置, 其中, 所述处理装置还包括: 传输模块, 用于将所述视频图像按照默认码率传输, 所述默认码率不高 于所述第一码率和第二码率中较大的码率且高于所述第一码率和第二码率 中较小的码率; 或者将所述视频图像分为目标区域的视频图像和非目标区域 的视频图像, 并采用不同通信传输通道分别传输。
11、 根据权利要求 10所述的处理装置, 其中, 所述传输模块将所述视 频图像按照默认码率传输时, 所述检测模块检测当前按照默认码率传输的视 频图像的丢包率;
所述传输模块将所述视频图像分为目标区域的视频图像和非目标区域 的视频图像, 并采用不同通信传输通道分别传输时, 所述检测模块分别检测 两个通信传输通道的丢包率, 并取均值作为当前视频图像传输的丢包率; 或 者当目标区域和非目标区域的视频图像采用的码率相同时,检测任一通信传 输通道的丢包率作为当前视频图像传输的丢包率。
12、根据权利要求 8-11任一权利要求所述的处理装置, 其中, 所述处理 装置还包括:
确定模块, 用于通过输入参数配置、 默认参数配置或者自适应算法确定 所述目标区域的位置及大小。
13、根据权利要求 8-12任一权利要求所述的处理装置, 其中, 所述处理 模块, 还用于获取预定的第一码率, 将所述目标区域的视频图像采用第一码 率处理; 降低非目标区域的视频图像的码率, 并检测到当前视频图像传输的 丢包率不大于丢包阈值时, 将所述非目标区域的视频图像采用的当前码率确 定为第二码率; 将所述非目标区域的视频图像采用第二码率处理。
14、根据权利要求 8-13任一权利要求所述的处理装置, 其中, 所述处理 装置还包括:
合成模块, 用于将所述采用第一码率处理后的目标区域的视频图像、 和 采用第二码率处理后的非目标区域的视频图像, 进行合成。
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