会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 1. 发明公开
    • METHOD AND APPARATUS FOR EVALUATING VIDEO QUALITY
    • 评估视频质量的方法和设备
    • EP3282698A1
    • 2018-02-14
    • EP16785751.5
    • 2016-03-03
    • HUAWEI TECHNOLOGIES CO., LTD.
    • GAO, ShanYANG, FuzhengXU, Ziqiang
    • H04N17/00H04L12/26
    • H04L43/0829H04L65/60H04L65/80H04N17/004
    • The present invention relates to the field of digital signal processing technologies, and discloses a video data quality estimation method and apparatus. The video data quality estimation method includes: obtaining a parameter used to obtain video quality of the video, where the parameter used to obtain video quality of the video includes at least one of a content complexity factor of the video, an average video frame impairment rate of the video, a sequence impairment rate of the video, or a packet-loss event frequency of the video; and obtaining quality of the video according to the parameter used to obtain video quality of the video. According to the present invention, quality estimation can be performed on video data in an application scenario in which a specific video stream is unavailable.
    • 数字信号处理技术领域本发明涉及数字信号处理技术领域,并且公开了一种视频数据质量估计方法和装置。 所述视频数据质量估计方法包括:获取用于获取所述视频的视频质量的参数,所述用于获取所述视频的视频质量的参数包括所述视频的内容复杂度因子,平均视频帧损伤率 视频的序列减损率或视频的丢包事件频率; 以及根据用于获得视频的视频质量的参数来获得视频的质量。 根据本发明,可以在特定视频流不可用的应用场景中对视频数据执行质量估计。
    • 7. 发明公开
    • METHOD, DEVICE, AND EQUIPMENT FOR VOICE QUALITY ASSESSMENT
    • 用于语音质量评估的方法,装置和设备
    • EP3316255A1
    • 2018-05-02
    • EP16869530.2
    • 2016-04-18
    • Huawei Technologies Co., Ltd.
    • XIAO, WeiLI, SuhuaYANG, Fuzheng
    • G10L25/60
    • G10L25/60G10L25/18G10L25/21G10L25/30
    • A voice quality evaluation method includes: obtaining a time envelope of a voice signal (101); performing time-to-frequency conversion on the time envelope to obtain an envelope spectrum (102); performing feature extraction on the envelope spectrum to obtain a feature parameter (103); performing voice quality evaluation in voice communications according to the feature parameter to obtain a first voice quality parameter of the voice signal (104); calculating a second voice quality parameter of the voice signal by using a network parameter evaluation model (105); and performing a comprehensive analysis according to the first voice quality parameter and the second voice quality parameter to obtain a quality evaluation parameter of the voice signal that is input in the band (106). Also disclosed are a voice quality evaluation apparatus and a voice quality evaluation device.
    • 一种语音质量评估方法,包括:获取语音信号的时间包络(101); 对所述时间包络执行时间 - 频率转换以获得包络频谱(102); 对包络光谱进行特征提取,得到特征参数(103); 根据所述特征参数对语音通信进行语音质量评估,得到所述语音信号的第一语音质量参数; 通过网络参数评估模型(105)计算语音信号的第二语音质量参数; 根据所述第一语音质量参数和所述第二语音质量参数进行综合分析,得到所述频段(106)输入的语音信号的质量评估参数。 还公开了一种语音质量评估装置和一种语音质量评估装置。
    • 8. 发明公开
    • METHOD AND DEVICE FOR EVALUATING VIDEO QUALITY
    • 用于评估视频质量的方法和设备
    • EP2833639A1
    • 2015-02-04
    • EP12877137.5
    • 2012-12-18
    • Huawei Technologies Co., Ltd.
    • SUN, LinaGAO, ShanYANG, Fuzheng
    • H04N17/02
    • H04N19/85H04N17/004H04N19/124H04N19/154
    • Embodiments of the present invention provide a method and an apparatus for assessing video quality, which can assess video quality accurately. The method includes: determining an actual quantization parameter and a critical quantization parameter of the target video according to a target video, where the critical quantization parameter is a maximum quantization parameter of the target video in a case in which a distortion is not evidently identifiable by human eyes; and determining quality of the target video according to the actual quantization parameter and the critical quantization parameter. According to the method and apparatus for assessing video quality in the embodiments of the present invention, a critical quantization parameter of a target video is determined, and the actual quantization parameter is compared with the critical quantization parameter, which can accurately determine whether subjective quality of the target video changes strictly monotonically relative to the used actual quantization parameter, so that the video quality can be assessed accurately.
    • 本发明的实施例提供了一种用于评估视频质量的方法和装置,其可以准确地评估视频质量。 该方法包括:根据目标视频确定目标视频的实际量化参数和临界量化参数,其中临界量化参数是目标视频的最大量化参数,其中失真不明显可由 人的眼睛; 根据实际量化参数和临界量化参数确定目标视频的质量。 根据本发明实施例的视频质量评估方法和装置,确定目标视频的临界量化参数,并将实际量化参数与临界量化参数进行比较,从而可以准确判断主观质量 目标视频相对于所使用的实际量化参数严格单调地变化,从而可以准确地评估视频质量。
    • 10. 发明公开
    • METHOD FOR DETECTING THE QUALITY OF THE MULTIMEDIA COMMUNICATION
    • QUALITÄTERKENNUNGSMETHODEVON MULTIMEDIAKOMMUNIKATION
    • EP1814307A1
    • 2007-08-01
    • EP06753011.3
    • 2006-06-23
    • Huawei Technologies Co., Ltd.
    • YANG, FuzhengLUO, ZhongWAN, ShuaiCHANG, Yilin
    • H04N1/56
    • H04N17/004G06T1/0028G06T2201/0051G06T2201/0061G06T2201/0083G06T2201/0202
    • A method for measuring multimedia communication quality is disclosed. The multimedia video communication quality may be objectively reflected through the embedment and extraction of digital watermark under a precondition that the quality of the multimedia video data is not obviously affected. In the invention, each frame of the multimedia video data is uniformly divided into blocks of equal size and watermark data is embedded in each of the blocks, so that the watermark may be uniformly distributed. The multimedia video data are divided into groups, and the watermark is embedded in a part of the frames with equal interval between the frames in each group to reduce the effect of the watermark on the data. The watermark information is directly embedded in the spatial domain of the original video data. The PSNR of the video data is linearly fitted using the accuracy rate of the recovered watermark relative to the original watermark, and the fitted PSNR is regarded as a measurement indication of the multimedia video communication quality. Post-processing such as smoothing filtering is performed on video frames after watermark extraction to eliminate the effect of the watermark on the multimedia video data quality.
    • 公开了一种用于测量多媒体通信质量的方法。 多媒体视频通信质量可以通过数字水印的嵌入和提取在多媒体视频数据的质量不受明显影响的前提下客观反映。 在本发明中,将多媒体视频数据的每一帧均匀地划分为相等大小的块,并且将水印数据嵌入到每个块中,使得水印可以均匀分布。 多媒体视频数据被分成组,并且水印嵌入在每个组中的帧之间具有相等间隔的帧的一部分中,以减少水印对数据的影响。 水印信息直接嵌入到原始视频数据的空间域中。 视频数据的PSNR使用恢复的水印相对于原始水印的准确率进行线性拟合,拟合的PSNR被认为是多媒体视频通信质量的测量指示。 在水印提取之后对视频帧执行平滑滤波等后处理,以消除水印对多媒体视频数据质量的影响。