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    • 7. 发明公开
    • DEBLOCKING METHOD AND DEBLOCKING FILTER
    • 去块方法和去块滤波器
    • EP3300361A1
    • 2018-03-28
    • EP16806532.4
    • 2016-03-02
    • Huawei Technologies Co. Ltd.
    • ZENG, BingMIAO, ZexiangCHEN, ChenZHU, ShuyuanZHAO, YinYANG, Haitao
    • H04N19/102H04N19/117H04N19/82H04N19/86
    • H04N19/86H04N19/102H04N19/117H04N19/137H04N19/176H04N19/82
    • Embodiments of the present invention provide a deblocking filtering method and a deblocking filter. The method includes: determining, according to a current pixel value of a to-be-filtered pixel in a picture block and pixel values of pixels in a first neighbouring partition of the to-be-filtered pixel, a first filtering offset value of the to-be-filtered pixel; performing prediction on the pixel value of the to-be-filtered pixel according to pixel values of pixels in a second neighbouring partition of the to-be-filtered pixel to obtain a prediction value of filtered value of the to-be-filtered pixel; and determining an actual filtered value of the to-be-filtered pixel according to the current pixel value, the first filtering offset value, and the prediction value of filtered value. In the embodiments of the present invention, the actual filtered value is obtained according to the additional prediction value of filtered value in combination with the current pixel value and the first filtering offset value. In this way, overall waveform smoothness of a filtered signal can be improved.
    • 本发明的实施例提供去块滤波方法和去块滤波器。 该方法包括:根据图像块中的待滤波像素的当前像素值和待滤波像素的第一相邻分区中的像素的像素值,确定所述待滤波像素的第一滤波偏移值 待过滤像素; 根据所述待滤波像素的第二相邻分区中的像素的像素值对所述待滤波像素的像素值进行预测,得到所述待滤波像素的滤波值的预测值; 根据当前像素值,第一滤波偏移值和滤波值的预测值,确定待滤波像素的实际滤波值。 在本发明实施例中,根据滤波值附加预测值结合当前像素值和第一滤波偏移值,得到实际滤波值。 以这种方式,可以改善滤波信号的整体波形平滑度。
    • 9. 发明公开
    • CARRIER-SIGNAL POWER RATIO CONTROL IN DIRECT DETECTION OPTICAL SYSTEMS
    • 直接检测光学系统中的载波信号功率比控制
    • EP3195499A1
    • 2017-07-26
    • EP15852281.3
    • 2015-09-25
    • Huawei Technologies Co. Ltd.
    • CHEN, ChenLI, ChuandongZHANG, Zhuhong
    • H04B10/2569
    • H04B10/07955H04B10/0799H04B10/548H04B10/572H04J14/0227
    • System and method embodiments are provided for carrier-signal power ratio (CSPR) control in direct detection optical systems. In an embodiment, a method for CSPR control in a direct detection optical system includes receiving an electrical signal in a receiver (RX) digital signal processor (DSP), wherein the electrical signal is obtained from a corresponding optical signal via a direct detection component; estimating, a CSPR for the electrical signal; generating one of a control signal according to the CSPR; and transmitting the control signal to one of an optical filter and a laser, wherein the wavelength control signal controls causes a center wavelength (CW) of one of the optical filter and the laser to be adjusted such that an offset between the CW of the laser and the CW of the optical filter results in a desired CSPR.
    • 系统和方法实施例被提供用于直接检测光学系统中的载波信号功率比(CSPR)控制。 在一个实施例中,一种用于直接检测光学系统中的CSPR控制的方法包括:在接收器(RX)数字信号处理器(DSP)中接收电信号,其中所述电信号经由直接检测组件从对应光信号获得; 估计电信号的CSPR; 根据CSPR产生控制信号中的一个; 以及将所述控制信号发送到光学滤波器和激光器中的一个,其中,所述波长控制信号控制使得所述光学滤波器和所述激光器中的一个的中心波长(CW)被调节,使得所述激光器的CW 并且光学滤波器的CW导致期望的CSPR。