Encoder, decoder, bit-stream, method of encoding, method of decoding an image pair corresponding with two views of a multi-view signal
    2.
    发明授权
    Encoder, decoder, bit-stream, method of encoding, method of decoding an image pair corresponding with two views of a multi-view signal 有权
    编码器,解码器,比特流,编码方法,对应于多视点信号的两个视图的图像对进行解码的方法

    公开(公告)号:US09344702B2

    公开(公告)日:2016-05-17

    申请号:US13814348

    申请日:2011-08-04

    摘要: A method of encoding an image pair (L,R) corresponding with two views of a multi-view signal, the method comprising generating a first combined image (LeRo) based on a first low pass filtered version of a first image of the image pair and a first low-pass filtered version of the second image of the image pair, generating a base-layer (LR-bas) by encoding the first combined image (LeRo), generating first and second disparity based predictors (LpredD,RpredD) and respectively associated first and second block-based displacement vectors (LHvec,RHvec) associated with the image information encoded in the base layer (LeRo′), the first and second block-based displacement vectors (LHvec,RHvec) being generated using disparity information present in the first and second images (L,R), the image information encoded in the base-layer (LeRo′) and the respective first and second images (L,R), generating an enhancement-layer (LR-enh; L-enh,R-enh) by encoding the first and second images (L,R) using the first and second disparity based predictors (LpredD, RpredD).

    摘要翻译: 一种编码对应于多视点信号的两个视图的图像对(L,R)的方法,所述方法包括基于图像对的第一图像的第一低通滤波版本生成第一组合图像(LeRo) 以及图像对的第二图像的第一低通滤波版本,通过对第一组合图像(LeRo)进行编码产生基本层(LR-bas),产生第一和第二基于视差的预测变量(LpredD,RpredD)和 与基底层(LeRo')中编码的图像信息相关联的第一和第二基于块的位移矢量(LHvec,RHvec),使用存在的差异信息生成的第一和第二基于块的位移矢量(LHvec,RHvec) 在第一和第二图像(L,R)中,编码在基层(LeRo')中的图像信息和相应的第一和第二图像(L,R),产生增强层(LR-enh; L- enh,R-enh)通过使用第一和第二图像(L,R)进行编码 第一和第二个基于视差的预测因子(LpredD,RpredD)。

    Image compression and decompression
    4.
    发明授权
    Image compression and decompression 有权
    图像压缩和解压缩

    公开(公告)号:US08582666B2

    公开(公告)日:2013-11-12

    申请号:US12519369

    申请日:2007-12-11

    IPC分类号: H04N7/12 H04N11/02 H04N11/04

    摘要: Clusters of pixels are defined for use in image compression and decompression. The image information used to define the clusters may include pixel values at predetermined positions relative to a pixel or related motion vectors, gradients, texture etc. During compression of images the image information relative to pixels is examined to determine the cluster to which it belongs. Thus pixels can be classified according to the cluster for their image information. In an embodiment the definitions of the clusters are selected dynamically, dependent on image content. For each cluster a control parameter set is computed for a post-processing operation, such as filter coefficients for filtering or statistical data for locally generating texture. The control parameter set is selected dependent on the image content so that, when the post-processing operation is applied to the image after decompression it will improve image quality for the pixels that are classified as belonging to the cluster. The compressed image and the control parameter sets are transmitted to a decompression apparatus. Upon decompression, the image information that represents the decompressed image is examined to classify pixels according to the clusters and the different control parameter sets for the selected clusters are used to control post-processing at the locations of the pixels.

    摘要翻译: 像素集合被定义用于图像压缩和解压缩。 用于定义聚类的图像信息可以包括相对于像素或相关运动矢量,渐变,纹理等的预定位置处的像素值。在压缩图像期间,检查相对于像素的图像信息以确定其所属的簇。 因此,像素可以根据集群的图像信息进行分类。 在一个实施例中,根据图像内容动态地选择簇的定义。 对于每个群集,计算用于后处理操作的控制参数集,例如用于过滤的滤波器系数或用于局部产生纹理的统计数据。 根据图像内容来选择控制参数集,使得当解压缩之后将后处理操作应用于图像时,其将改善被归类为属于集群的像素的图像质量。 压缩图像和控制参数集合被发送到解压缩装置。 在解压缩时,检查表示解压缩图像的图像信息,以根据簇分类像素,并且使用用于所选择的聚类的不同控制参数集来控制像素位置处的后处理。

    GENERATION OF HIGH DYNAMIC RANGE IMAGES FROM LOW DYNAMIC RANGE IMAGES
    6.
    发明申请
    GENERATION OF HIGH DYNAMIC RANGE IMAGES FROM LOW DYNAMIC RANGE IMAGES 审中-公开
    低动态范围图像的高动态范围图像的生成

    公开(公告)号:US20130107956A1

    公开(公告)日:2013-05-02

    申请号:US13807157

    申请日:2011-06-30

    IPC分类号: H04N7/26

    摘要: An approach is provided for generating a high dynamic range image from a low dynamic range image. The generation is performed using a mapping relating input data in the form of input sets of image spatial positions and a combination of color coordinates of low dynamic range pixel values associated with the image spatial positions to output data in the form of high dynamic range pixel values. The mapping is generated from a reference low dynamic range image and a corresponding reference high dynamic range image. Thus, a mapping from the low dynamic range image to a high dynamic range image is generated on the basis of corresponding reference images. The approach may be used for prediction of high dynamic range images from low dynamic range images in an encoder and decoder. A residual image may be generated and used to provide improved high dynamic range image quality.

    摘要翻译: 提供了用于从低动态范围图像生成高动态范围图像的方法。 使用以输入图像空间位置集合的形式的输入数据和与图像空间位置相关联的低动态范围像素值的颜色坐标的组合的映射来执行生成,以以高动态范围像素值的形式输出数据 。 该映射是从参考低动态范围图像和相应的参考高动态范围图像生成的。 因此,基于相应的参考图像生成从低动态范围图像到高动态范围图像的映射。 该方法可用于从编码器和解码器中的低动态范围图像预测高动态范围图像。 可以产生残余图像并用于提供改善的高动态范围图像质量。

    EFFICIENT CODING OF DEPTH TRANSITIONS IN 3D (VIDEO)
    7.
    发明申请
    EFFICIENT CODING OF DEPTH TRANSITIONS IN 3D (VIDEO) 审中-公开
    三维(视频)深度转换的有效编码

    公开(公告)号:US20120229603A1

    公开(公告)日:2012-09-13

    申请号:US13508739

    申请日:2010-11-08

    IPC分类号: H04N13/00

    摘要: A method of encoding a video data signal (15) is provided, together with a method for decoding. The encoding comprises providing color information (51) for pixels in an image, providing a depth map with depth information (52) for the pixels, providing transition information (56, 57, 60, 70, 71) being representative of a width (63, 73) of a transition region (61, 72) in the image, the transition region (61, 72) comprising a depth transition (62) and blended pixels in which colors of a foreground object and a background object are blended, and generating (24) the video data signal (15) comprising encoded data representing the color information (51), the depth map (52) and the transition information (56, 57, 60, 70, 71). The decoding comprises using the transition information (56, 57, 60, 70, 71) for determining the width (63, 73) of the transition regions (61, 72) and for determining alpha values (53) for pixels inside the transition regions (61, 72). The determined alpha values (53) are used for determining the color of a blended pixel at the transition of a foreground object and a background object.

    摘要翻译: 提供了一种编码视频数据信号(15)的方法以及解码方法。 该编码包括为图像中的像素提供彩色信息(51),为像素提供具有深度信息(52)的深度图,提供代表宽度的过渡信息(56,57,60,70,71)(63 ,73),所述图像中的过渡区域(61,72)的过渡区域(61,72)包括深度转变(62)和混合了前景对象和背景对象的颜色的混合像素,并且生成 (24)包括表示颜色信息(51)的编码数据,深度图(52)和转换信息(56,57,60,70,71)的视频数据信号(15)。 解码包括使用转换信息(56,57,60,70,71)来确定过渡区域(61,72)的宽度(63,73),并且用于确定过渡区域内的像素的α值(53) (61,72)。 确定的α值(53)用于确定在前景物体和背景物体的转变处的混合像素的颜色。

    METHOD AND SYSTEM FOR ENCODING A 3D VIDEO SIGNAL, ENCLOSED 3D VIDEO SIGNAL, METHOD AND SYSTEM FOR DECODER FOR A 3D VIDEO SIGNAL
    8.
    发明申请
    METHOD AND SYSTEM FOR ENCODING A 3D VIDEO SIGNAL, ENCLOSED 3D VIDEO SIGNAL, METHOD AND SYSTEM FOR DECODER FOR A 3D VIDEO SIGNAL 有权
    用于编码3D视频信号的方法和系统,附加的3D视频信号,用于3D视频信号的解码器的方法和系统

    公开(公告)号:US20100195716A1

    公开(公告)日:2010-08-05

    申请号:US12665093

    申请日:2008-06-19

    IPC分类号: H04N7/26

    CPC分类号: H04N19/597

    摘要: In a method for encoding and an encoder for a 3D video signal, centre view frames, a depth map for centre view frames and an occlusion data frame are encoded. On the basis of the depth map for the centre view frame a distinction is made between functional and non-functional data in an occlusion data frame. This allows a strong reduction in bits needed for the encoded occlusion data frame. In the decoder a combined data stream is made of functional data in the encoded occlusion data frames and the centre view frames. Preferably the centre view frames are used as reference frames in encoding the occlusion data frames.

    摘要翻译: 在一种用于编码的方法和用于3D视频信号的编码器中,编码中心视图帧,中心视图帧的深度图和遮挡数据帧。 基于中心视图帧的深度图,区分闭塞数据帧中的功能和非功能数据。 这允许编码的遮挡数据帧所需的位的强大的减少。 在解码器中,组合数据流由编码的遮挡数据帧和中心视图帧中的功能数据组成。 优选地,在对遮挡数据帧进行编码时,将中心视图帧用作参考帧。

    IMAGE COMPRESSION AND DECOMPRESSION
    9.
    发明申请
    IMAGE COMPRESSION AND DECOMPRESSION 有权
    图像压缩和分解

    公开(公告)号:US20100027686A1

    公开(公告)日:2010-02-04

    申请号:US12519369

    申请日:2007-12-11

    IPC分类号: H04N7/26 G06K9/46

    摘要: Clusters of pixels are defined for use in image compression and decompression. The image information used to define the clusters may include pixel values at predetermined positions relative to a pixel or related motion vectors, gradients, texture etc. During compression of images the image information relative to pixels is examined to determine the cluster to which it belongs. Thus pixels can be classified according to the cluster for their image information. In an embodiment the definitions of the clusters are selected dynamically, dependent on image content. For each cluster a control parameter set is computed for a post-processing operation, such as filter coefficients for filtering or statistical data for locally generating texture. The control parameter set is selected dependent on the image content so that, when the post-processing operation is applied to the image after decompression it will improve image quality for the pixels that are classified as belonging to the cluster. The compressed image and the control parameter sets are transmitted to a decompression apparatus. Upon decompression, the image information that represents the decompressed image is examined to classify pixels according to the clusters and the different control parameter sets for the selected clusters are used to control post-processing at the locations of the pixels.

    摘要翻译: 像素集合被定义用于图像压缩和解压缩。 用于定义聚类的图像信息可以包括相对于像素或相关运动矢量,渐变,纹理等的预定位置处的像素值。在压缩图像期间,检查相对于像素的图像信息以确定其所属的簇。 因此,像素可以根据集群的图像信息进行分类。 在一个实施例中,根据图像内容动态地选择簇的定义。 对于每个群集,计算用于后处理操作的控制参数集,例如用于过滤的滤波器系数或用于局部产生纹理的统计数据。 根据图像内容来选择控制参数集,使得当解压缩之后将后处理操作应用于图像时,其将改善被归类为属于集群的像素的图像质量。 压缩图像和控制参数集合被发送到解压缩装置。 在解压缩时,检查表示解压缩图像的图像信息,以根据簇分类像素,并且使用用于所选择的聚类的不同控制参数集来控制像素位置处的后处理。