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    • 1. 发明申请
    • METHOD OF ENCODING FOR HANDHELD APPARATUSES
    • 编码手持设备的方法
    • WO2005002233A1
    • 2005-01-06
    • PCT/IB2004/002109
    • 2004-06-22
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.JUNG, JoëlBOURGE, Arnaud
    • JUNG, JoëlBOURGE, Arnaud
    • H04N7/26
    • H04N19/105H04N19/147H04N19/156H04N19/176H04N19/423H04N19/593H04N19/61
    • The present invention relates to a method of encoding a sequence of pictures, a picture being divided into blocks of data, said encoding method comprising the steps of: - computing a residual error block from a difference between a current block contained in a current picture and a candidate area using of a prediction function, - computing an entropy of the residual error block, -computing an overall error between said current block and said candidate area, - estimating a power consumption of a video processing device adapted to implement said prediction function, - computing a rate-distortion value on the basis of the entropy, the overall error and the estimated power consumption of the video processing device, - applying the preceding steps to a set of candidate areas using a set of prediction functions in order to select a prediction function according to the rate-distortion value.
    • 本发明涉及对图像序列进行编码的方法,将图像划分成数据块,所述编码方法包括以下步骤: - 根据当前图像中包含的当前块与当前图像中包含的当前块之间的差计算剩余误差块 使用预测函数的候选区域, - 计算残余误差块的熵, - 计算所述当前块和所述候选区域之间的总体误差, - 估计适于实现所述预测函数的视频处理设备的功耗, - 基于视频处理设备的熵,总体误差和估计的功耗来计算速率失真值, - 使用一组预测函数将前述步骤应用于一组候选区域,以便选择一个 预测函数根据速率失真值。
    • 2. 发明申请
    • DIGITAL IMAGE PROCESSING METHOD FOR LOW-RATE APPLICATIONS
    • 用于低速应用的数字图像处理方法
    • WO2003092294A1
    • 2003-11-06
    • PCT/IB2003/001564
    • 2003-04-16
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.BOURGE, ArnaudJUNG, Joël
    • BOURGE, ArnaudJUNG, Joël
    • H04N7/26
    • H04N19/527H04N19/86
    • The present invention relates to a method of processing digital images (30) comprising data blocks, said method including a step of determining (31) a homogeneous region containing two adjacent blocks (Bj,Bk) whose continuous components (Lj, Lk) differ by a value lower than a predetermined threshold. It also includes a step of determining (32) a segment to be corrected (Sjk) which comprises a set of initial data on either side of a border separating the adjacent blocks. The method finally comprises a step of replacing (33) the set of initial data of the segment to be corrected by a set of corrected data (S'jk) chosen at random from various possible corrected data sets (34), an average value of a corrected set of data being substantially equal to an average value of the continuous components of the two adjacent blocks.
    • 本发明涉及一种处理包含数据块的数字图像(30)的方法,所述方法包括以下步骤:确定(31)包含两个相邻块(Bj,Bk)的均匀区域,其中连续分量(Lj,Lk) 小于预定阈值的值。 它还包括确定(32)要校正的段(Sjk)的步骤,其包括在分隔相邻块的边界的任一侧上的一组初始数据。 该方法最终包括以下步骤:通过从各种可能的校正数据集(34)中随机选择的一组校正数据(S'jk)来替换(33)要校正的段的初始数据集合, 校正的数据集合基本上等于两个相邻块的连续分量的平均值。
    • 5. 发明申请
    • POWER OPTIMIZED COLLOCATED MOTION ESTIMATION METHOD
    • 功率优化运动估计方法
    • WO2005041585A1
    • 2005-05-06
    • PCT/IB2004/003469
    • 2004-10-20
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.JUNG, Joël
    • JUNG, Joël
    • H04N7/26
    • H04N19/433H04N19/156H04N19/56H04N19/593H04N19/61
    • The present invention relates to a method of motion estimation for use in a device adapted to process a sequence of frames, a frame being divided into blocks of data samples. Said motion estimation method comprises a step of computing a residual error block associated with a motion vector candidate (MV) on the basis of a current block (cb) contained in a current frame (CF) and of a reference block (rb) contained in a reference frame (RF), said reference block having a same position in the reference frame as the current block has in the current frame. The motion vector candidate defines a relative position of a virtual block (vb) containing a first reference portion (rbp1) of the reference block with reference to said reference block. The residual error block is then computed from a first difference between data samples of the first reference portion and corresponding data samples of a first current portion (cbp1) of the current block, and a second difference between a prediction of data samples of a second reference portion (pred) of the virtual block, which is complementary to the first reference portion, and data samples of a second current portion (cbp2) of the current block, which is complementary to the first current portion.
    • 本发明涉及一种用于在适于处理帧序列的设备中使用的运动估计方法,帧被划分成数据样本块。 所述运动估计方法包括以下步骤:基于包含在当前帧(CF)中的当前块(cb)和包含在当前帧(CF)中的参考块(rb),计算与运动矢量候选(MV)相关联的残差误差块 参考帧(RF),所述参考块在当前帧中在当前帧中具有与参考帧中相同的位置。 运动矢量候选定义参考所述参考块的包含参考块的第一参考部分(rbp1)的虚拟块(vb)的相对位置。 然后根据第一参考部分的数据样本和当前块的第一当前部分(cbp1)的对应数据样本之间的第一个差异和第二个参考的数据样本的预测之间的第二个差值来计算剩余误差块 与第一参考部分互补的虚拟块的部分(pred)以及与第一当前部分互补的当前块的第二当前部分(cbp2)的数据样本。
    • 7. 发明申请
    • CODING AND DECODING METHOD AND DEVICE
    • 编码和解码方法和装置
    • WO2003088681A1
    • 2003-10-23
    • PCT/IB2003/001371
    • 2003-04-03
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.MARQUANT, GwenaëlleJUNG, Joël
    • MARQUANT, GwenaëlleJUNG, Joël
    • H04N11/04
    • H04N11/044
    • The invention relates to a method of coding an input digital video sequence corresponding to an original color image sequence, said method comprising at least a step for converting said video sequence from the spatial domain to less representation data, a quantization step, for transforming the converted signals thus obtained into a reduced set of data, and a step for coding said reduced set of data. According to the invention, said coding method also comprises, before said converting step, a pre-processing step, provided for determining if the input video sequence is in YUV color space, Y being the luminance component and U, V the chrominance components, and transforming said space into a less redundant color space by means of a non-linear transformation taking into account the possible lower quality finally obtained.
    • 本发明涉及一种编码对应于原始彩色图像序列的输入数字视频序列的方法,所述方法至少包括一个步骤,用于将所述视频序列从空间域转换为较少的表示数据,量化步骤, 由此获得的信号变成减少的数据集,以及用于对所述缩减的数据集进行编码的步骤。 根据本发明,所述编码方法还包括在所述转换步骤之前的预处理步骤,用于确定输入视频序列是否在YUV色彩空间中,Y是亮度分量,U是V,色度分量,以及 通过考虑到最终获得的可能较低质量的非线性变换将所述空间转换成较少冗余的颜色空间。
    • 9. 发明申请
    • METHOD OF PROCESSING DIGITAL IMAGES FOR LOW-RATE APPLICATIONS.
    • 处理低速应用数字图像的方法。
    • WO2003094525A1
    • 2003-11-13
    • PCT/IB2003/001584
    • 2003-04-22
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.JUNG, Joël
    • JUNG, Joël
    • H04N7/26
    • H04N19/527H04N19/86
    • The invention relates to a method of processing a digital image encoded and decoded in accordance with a pixel-block encoding technique, suitable for supplying a motion vector per block of pixels and a quantization step per image. Said method comprises a step of selecting said decoded image if its quantization step is larger than a predetermined threshold, and a step of detecting pixel blocks having a secondary grid. Said detection step comprises a sub-step of detecting a uniform block of the decoded image, a sub-step of selecting a uniform block of non-zero motion and with an amplitude which is smaller than a predetermined amplitude threshold, and a sub-step of localizing a secondary grid within a uniform block selected as a function of its motion vector. Such a method has the advantage that the performance of a method of correcting block effects or evaluating the quality of said decoded image is enhanced. Moreover, said method has a small complexity, which renders it possible to use it in real time in portable multimedia apparatus.
    • 本发明涉及一种处理根据像素块编码技术编码和解码的数字图像的方法,适用于每像素块提供运动矢量和每个图像的量化步长。 所述方法包括如果其量化步长大于预定阈值则选择所述解码图像的步骤,以及检测具有次级栅格的像素块的步骤。 所述检测步骤包括检测解码图像的均匀块的子步骤,选择非零运动的均匀块并且具有小于预定幅度阈值的幅度的子步骤,以及子步骤 在作为其运动矢量的函数选择的均匀块内定位辅助栅格。 这种方法的优点在于,增强了对块效果的校正方法的执行或评估所述解码图像的质量的优点。 此外,所述方法具有小的复杂性,这使得可以在便携式多媒体装置中实时地使用它。