NON-DYADIC SPATIAL SCALABLE WAVELET TRANSFORM
    31.
    发明申请
    NON-DYADIC SPATIAL SCALABLE WAVELET TRANSFORM 有权
    非二维空间可扩展小波变换

    公开(公告)号:US20080123983A1

    公开(公告)日:2008-05-29

    申请号:US11563629

    申请日:2006-11-27

    IPC分类号: G06K9/36

    CPC分类号: H04N19/635

    摘要: A non-dyadic spatial scalable wavelet transform may scale an original digital video frame or digital image at a non-dyadic ratio. The digital video frame or digital image is quantized to create a set of data representing the digital video frame or digital image. The set of data is then input to the non-dyadic spatial scalable wavelet transform. The non-dyadic spatial scalable wavelet transform may then transform the data associated with a first pixel to a high-pass coefficient and use the high-pass coefficient to transform the data associated with a second and third pixel to low-pass coefficients. The low-pass coefficients may then be converted to a digital image for viewing.

    摘要翻译: 非二元空间可缩放小波变换可以以非二进制比例缩放原始数字视频帧或数字图像。 量化数字视频帧或数字图像以创建表示数字视频帧或数字图像的一组数据。 然后将该组数据输入到非二进制空间可缩放小波变换。 然后,非二元空间可缩放小波变换可以将与第一像素相关联的数据变换为高通系数,并使用高通系数将与第二和第三像素相关联的数据变换为低通系数。 然后可以将低通系数转换为数字图像以供观看。

    Transcoding Hierarchical B-Frames with Rate-Distortion Optimization in the DCT Domain
    32.
    发明申请
    Transcoding Hierarchical B-Frames with Rate-Distortion Optimization in the DCT Domain 审中-公开
    在DCT域中使用速率失真优化的转码分层B帧

    公开(公告)号:US20080056354A1

    公开(公告)日:2008-03-06

    申请号:US11468253

    申请日:2006-08-29

    IPC分类号: H04N7/12

    摘要: Transcoding hierarchical B-frames with rate-distortion optimization in the DCT domain is described. More particularly, and in one aspect, input media content is transcoded from an original bit rate to a reduced bit rate. The input media content includes multiple hierarchical bidirectional frames (“B-frames”), multiple intra-frames (I-frames), and multiple predictive frames (P-frames). Each B-frame is open-loop transcoded in view of the reduced bit rate by optimizing texture and motion rate-distortion in the DCT domain to generate a respective portion of transcoded media content. The transcoded media content, which includes transcoded B-frames, I-frames, and P-frames, is provided to a user for viewing.

    摘要翻译: 描述了在DCT域中用码率失真优化代码转换分级B帧。 更具体地,并且在一个方面,将输入媒体内容从原始比特率转码为降低的比特率。 输入媒体内容包括多个分级双向帧(“B帧”),多个帧内(I帧)和多个预测帧(P帧)。 考虑到降低的比特率,通过优化DCT域中的纹理和运动速率失真来生成各代码转换的媒体内容的每个B帧是开环转码的。 将包含代码转换的B帧,I帧和P帧的代码转换的媒体内容提供给用户进行观看。

    Spatially-scalable video coding
    33.
    发明申请
    Spatially-scalable video coding 有权
    空间可缩放视频编码

    公开(公告)号:US20080008252A1

    公开(公告)日:2008-01-10

    申请号:US11483150

    申请日:2006-07-07

    IPC分类号: H04B1/66

    CPC分类号: H04N19/59 H04N19/33 H04N19/61

    摘要: Video data for a high resolution image unit is coded with regard to both a low resolution reference image unit and a high resolution reference image unit. In an example encoding implementation, both low pass information and high pass information of residue data for a current image are generated. In an example decoding implementation, a current image is reconstructed by synthesizing both low pass information and high pass information for the reconstructed image.

    摘要翻译: 关于低分辨率参考图像单元和高分辨率参考图像单元的高分辨率图像单元的视频数据被编码。 在编码实现的示例中,生成当前图像的残差数据的低通信息和高通信息。 在解码实现的示例中,通过合成重建图像的低通信息和高通信息来重建当前图像。

    Lighting unit reflector
    34.
    发明申请
    Lighting unit reflector 审中-公开
    照明单元反射器

    公开(公告)号:US20070247856A1

    公开(公告)日:2007-10-25

    申请号:US11732965

    申请日:2007-04-04

    IPC分类号: F21V7/00

    摘要: A lighting unit that includes a light source and a reflector assembly upon which the light source is mounted. The reflector assembly includes a first reflector having a first curved reflective surface extending away from the light source, and a second reflector having a second curved reflective surface extending away from the light source. The first curved reflective surface faces and opposes the second curved reflective surface. The first curved reflective surface has a curvature that is different from that of the second curved reflective surface. The first and second curved reflective surfaces both preferably terminate in convexities that reduce the size of dark band areas of illumination.

    摘要翻译: 一种照明单元,包括光源和安装有光源的反射器组件。 反射器组件包括具有远离光源延伸的第一弯曲反射表面的第一反射器和具有远离光源延伸的第二弯曲反射表面的第二反射器。 第一弯曲反射表面面对并与第二弯曲反射表面相对。 第一弯曲反射表面具有与第二弯曲反射表面不同的曲率。 第一和第二弯曲反射表面都优选以凸起的方式终止,这些凹凸减小了暗带的照明区域的尺寸。

    In-band wavelet video coding with spatial scalability
    36.
    发明申请
    In-band wavelet video coding with spatial scalability 有权
    具有空间可扩展性的带内小波视频编码

    公开(公告)号:US20060153465A1

    公开(公告)日:2006-07-13

    申请号:US11203817

    申请日:2005-08-15

    IPC分类号: G06K9/46 G06K9/36

    摘要: Exemplary improvements for in-band wavelet video coding with spatial scalability are described. In one implementation an encoder uses leaky prediction to balance a trade-off between reducing drifting errors at lower resolutions while maintaining coding performance at higher resolutions. In an alternative implementation, a trade-off technique defines two coding modes at the macroblock level. The first mode includes predictions employed at a low quality reference while the second mode includes predictions employed at a high quality reference. The method then adaptively selects the proper coding mode for each macroblock according to a rate-distortion criterion.

    摘要翻译: 描述了具有空间可伸缩性的带内小波视频编码的示例性改进。 在一个实现中,编码器使用泄漏预测来平衡在较低分辨率下减少漂移误差之间的折衷,同时保持较高分辨率下的编码性能。 在替代实现中,权衡技术定义了宏块级的两种编码模式。 第一模式包括在低质量参考下使用的预测,而第二模式包括在高质量参考下使用的预测。 然后,该方法根据速率失真准则自适应地选择每个宏块的适当编码模式。

    Embedded base layer codec for 3D sub-band coding
    38.
    发明申请
    Embedded base layer codec for 3D sub-band coding 有权
    用于3D子带编码的嵌入式基层编解码器

    公开(公告)号:US20060008003A1

    公开(公告)日:2006-01-12

    申请号:US11126650

    申请日:2005-05-10

    摘要: Techniques and tools are described for scalable video coding and decoding. For example, a 3D sub-band video encoder includes an embedded base layer codec as well as temporal sub-band transforms and spatial sub-band transforms. The placement of the base layer codec among the sub-band transforms and the role of the base layer codec in scalable video coding vary depending on implementation. In general, the base layer codec provides efficient compression at low bit rates and produces a base layer compressed video bit stream compatible with existing decoders. At the same time, the 3D sub-band video encoder provides spatial and temporal scalability options at higher bit rates, refining the base layer video. A corresponding 3D sub-band video decoder includes an embedded base layer decoder.

    摘要翻译: 描述了可扩展视频编码和解码的技术和工具。 例如,3D子带视频编码器包括嵌入式基层编解码器以及时间子带变换和空间子带变换。 基带编解码器在子带变换中的布置以及基础层编解码器在可伸缩视频编码中的作用根据实现而有所不同。 通常,基层编解码器以低比特率提供有效的压缩,并产生与现有解码器兼容的基本层压缩视频比特流。 同时,3D子带视频编码器以更高的比特率提供空间和时间的可扩展性选项,从而改善基本层视频。 相应的3D子带视频解码器包括嵌入式基本层解码器。

    Method for synchronizing or decoding a baseband signal
    39.
    发明申请
    Method for synchronizing or decoding a baseband signal 审中-公开
    用于同步或解码基带信号的方法

    公开(公告)号:US20050202795A1

    公开(公告)日:2005-09-15

    申请号:US10422321

    申请日:2003-04-24

    摘要: A baseband process operating on a receiver in a communication system, such as an 802.15.4 communication system, is provided. The baseband process has a set of predefined reference signals, with each reference signal associated with a possible characteristic in the baseband signal. The baseband process receives a degraded baseband signal, and preprocesses the baseband signal to reduce or remove the effects of the degradation. The preprocessed baseband signal is correlated with reference signals from the set of predefined reference signals, and the reference signal with the best correlation is identified. By identifying the best correlating reference signal, the baseband process is able to identify a characteristic of the baseband signal. In one example of the baseband process, the baseband signal is preprocessed by auto-correlating the degraded baseband signal with a delayed version of the degraded baseband signal. The preprocessed baseband signal is then correlated against a set of sync reference signals to find a sync offset for the baseband signal. When synchronized with the baseband signal, the baseband process may be correlated against a set of symbol reference signals to decode sequential symbols in the baseband signal.

    摘要翻译: 提供了在诸如802.15.4通信系统的通信系统中的接收机上操作的基带处理。 基带处理具有一组预定义的参考信号,每个参考信号与基带信号中的可能特性相关联。 基带处理接收降级的基带信号,并预处理基带信号以减少或消除降级的影响。 预处理的基带信号与来自预定参考信号的参考信号相关,并且识别具有最佳相关性的参考信号。 通过识别最佳相关参考信号,基带处理能够识别基带信号的特性。 在基带处理的一个示例中,通过将劣化的基带信号与降级的基带信号的延迟版本自相关来对基带信号进行预处理。 然后将预处理的基带信号与一组同步参考信号相关,以找到基带信号的同步偏移。 当与基带信号同步时,基带处理可以与一组符号参考信号相关,以对基带信号中的顺序符号进行解码。

    Color space coding framework
    40.
    发明申请
    Color space coding framework 审中-公开
    颜色空间编码框架

    公开(公告)号:US20050129130A1

    公开(公告)日:2005-06-16

    申请号:US10733876

    申请日:2003-12-10

    摘要: A coding framework that provides conversions between one or more video formats without the use of a transcoder. A video information stream that includes color information formatted in accordance with a first color space sampling format is split into a base stream and an enhanced stream. The base stream is formatted in accordance with a second color space sampling format. The enhanced stream includes enhanced information that when combined with the base stream re-constructs the first format. During encoding, the enhanced stream may be encoded using spatial information related to the base information stream. An output stream of the encoded base stream and encoded enhanced stream may be interleaved, concatenated, or include independent files for the encoded base stream and the encoded enhanced stream.

    摘要翻译: 一种编码框架,可在不使用代码转换器的情况下提供一种或多种视频格式之间的转换。 包括根据第一颜色空间采样格式格式化的颜色信息的视频信息流被分割成基本流和增强流。 基本流根据第二颜色空间采样格式进行格式化。 增强流包括增强的信息,当与基本流合并时重新构建第一格式。 在编码期间,可以使用与基本信息流相关的空间信息对增强流进行编码。 编码的基本流和编码的增强流的输出流可以被交错,级联或包括用于编码的基本流和编码的增强流的独立文件。