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
    • 3. 发明申请
    • DIGITAL IMAGE COMPRESSION BY ADAPTIVE MACROBLOCK RESOLUTION CODING
    • 数字图像压缩自适应宏块解码编码
    • WO2010144408A1
    • 2010-12-16
    • PCT/US2010/037722
    • 2010-06-08
    • MOTOROLA MOBILITY, INC.USLUBAS, SerhanKATSAGGELOS, Aggelos K.ISHTIAQ, FaisalHSIANG, Shih-TaMAANI, Ehsan
    • USLUBAS, SerhanKATSAGGELOS, Aggelos K.ISHTIAQ, FaisalHSIANG, Shih-TaMAANI, Ehsan
    • H04N7/26H04N7/46H04N7/50
    • H04N19/59H04N19/132H04N19/147H04N19/176H04N19/182H04N19/19H04N19/33H04N19/46H04N19/61
    • Disclosed is an image encoder that divides (1000) a digital image into a set of "macroblocks." If appropriate, a macroblock is "downsampled" (1004) to a lower resolution. The lower-resolution macroblock is then encoded by applying spatial (and possibly temporal) prediction (1006). The "residual" of the macroblock is calculated (1010) as the difference between the predicted and actual contents of the macroblock. The low-resolution residual is then either transmitted to an image decoder or stored for later use (1010). In some embodiments, the encoder calculates (1008) the rate-distortion costs of encoding the original-resolution macroblock and the lower-resolution macroblock and then only encodes (1010) the lower-resolution macroblock if its cost is lower. When a decoder receives (1104) a lower-resolution residual, it recovers the lower-resolution macroblock using standard prediction techniques (1106). Then, the macroblock is "upsampled" (1110) to its original resolution by interpolating the values left out by the encoder. The macroblocks are then joined (1114) to form the original digital image.
    • 公开了一种图像编码器,其将(1000)数字图像划分为一组“宏块”。 如果合适,则将宏块“下采样”(1004)降低到较低的分辨率。 然后通过应用空间(和可能的时间)预测(1006)来对低分辨率宏块进行编码。 计算宏块的“残差”(1010)作为宏块的预测和实际内容之间的差。 然后将低分辨率残差传送到图像解码器或存储以供稍后使用(1010)。 在一些实施例中,编码器计算(1008)编码原始分辨率宏块和较低分辨率宏块的速率失真成本,然后仅在低成本较低分辨率宏块编码(1010)低分辨率宏块。 当解码器接收(1104)较低分辨率残差时,它使用标准预测技术(1106)来恢复较低分辨率的宏块。 然后,通过内插编码器剩下的值,将宏块“上采样”(1110)到其原始分辨率。 然后将宏块连接(1114)以形成原始数字图像。
    • 5. 发明申请
    • METHOD AND SYSTEM FOR INTELLIGENT VIDEO ADAPTATION
    • 用于智能视频适应的方法和系统
    • WO2008067174A2
    • 2008-06-05
    • PCT/US2007/084737
    • 2007-11-15
    • MOTOROLA, INC.LI, ZhuISHTIAQ, Faisal
    • LI, ZhuISHTIAQ, Faisal
    • H04N7/26
    • H04N19/156H04N19/102H04N19/115H04N19/154
    • A system (100) and method (200) for efficient video adaptation of an input video (102) is provided. The method can include segmenting (210) the input video into a plurality of video shots (142) using a video trace (111) to exploit a temporal structure of the input video, selecting (220) a subset of frames (144) for the video shots that minimizes a distortion of adapted video (152) using the video trace, and selecting transcoding parameters (122) for the subset of frames to produce an optimal video quality of the adapted video under constraints of frame rate, bit rate, and viewing time constraint. The video trace is a compact representation for temporal and spatial distortions for frames in the input video. A spatio-temporal rate-distortion model (320) provides selection of the transcoding parameters during adaptation.
    • 提供了一种用于输入视频(102)的高效视频适配的系统(100)和方法(200)。 该方法可以包括使用视频轨迹(111)将输入视频分割(210)到多个视频镜头(142)中以利用输入视频的时间结构,选择(220)帧(144)的子集 使用视频轨迹最小化适配视频(152)的失真的视频镜头,以及为帧子集选择代码转换参数(122),以在帧速率,比特率和观看的约束下产生适配视频的最佳视频质量 时间限制。 视频轨迹是用于输入视频中帧的时间和空间失真的紧凑表示。 空间 - 时间速率 - 失真模型(320)在适配期间提供对转码参数的选择。