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
    • 1. 发明授权
    • Temporal matte filter for video matting
    • 用于视频消光的时间无光泽滤光片
    • US08792718B2
    • 2014-07-29
    • US13538712
    • 2012-06-29
    • Xue BaiJue WangDavid P. Simons
    • Xue BaiJue WangDavid P. Simons
    • G06K9/34G06K9/48G06K9/40
    • H04N5/21G06T7/11G06T7/174G06T7/194G06T2207/10016G06T2207/10024G06T2207/20104G06T2207/20161
    • Methods and apparatus for temporal matte filtering. Temporal matte filtering methods are described that improve the temporal coherence of alpha mattes for a video sequence while maintaining the matte structures on individual frames. The temporal matte filter may implement a level-set-based matte averaging method. In the level-set-based matte averaging method, two or more input alpha mattes are obtained. Level set curves are generated for the two or more alpha mattes. An averaged level set is computed from the two or more level sets according to a distance-transform-based technique. A temporally smoothed alpha matte may then be reconstructed by interpolating pixel alpha values between the inner and outer level set curves of the averaged level set. The alpha mattes can be optionally warped towards a center frame according to an optical flow technique before the averaging operation performed by the temporal matte filter.
    • 时间哑光滤波的方法和装置。 描述了时间无光泽滤波方法,其改善了视频序列的α遮罩的时间相干性,同时保持了单个帧上的消光结构。 时间哑光滤波器可以实现基于电平集的无光均衡方法。 在基于水平集的遮罩平均方法中,获得两个或更多个输入alpha遮罩。 为两个或更多个alpha遮罩生成级别设置曲线。 根据基于距离变换的技术,从两个或多个级别集计算平均级别集合。 然后可以通过在平均水平集的内部和外部水平设置曲线之间内插像素α值来重构时间平滑的阿尔法无光泽。 在由时间哑光滤波器执行的平均化操作之前,可以根据光学流技术,将alpha哑光可选地朝向中心框架弯曲。
    • 5. 发明授权
    • Transforming images with different pixel aspect ratios
    • 用不同的像素长宽比转换图像
    • US5917549A
    • 1999-06-29
    • US693943
    • 1996-08-07
    • David P. SimonsScott S. SnibbeDaniel M. Wilk
    • David P. SimonsScott S. SnibbeDaniel M. Wilk
    • G06T3/40H04N5/262H04N7/01H04N9/74
    • H04N7/01G06T3/40H04N5/2628
    • A method for compositing first and second digital images having different pixel aspect ratios to reduce distortion of image content. The method includes determining a scaling factor from first and second pixel aspect ratios; scaling a first image by the scaling factor; and compositing the first and second images into a composite image. The scaling step may be limited to stretching or squashing the first image in only a horizontal direction. The scaling step may include resampling the first image. In another aspect, the invention features a method for controlling motion along a motion path in a composition having nonsquare pixels. The method includes determining a scaling factor based on the composition pixel aspect ratio; applying the scaling factor to a copy of the motion path; reparameterizing the copy of the motion path to generate a scaled motion mapping; and using the scaled motion mapping to control motion along the motion path. The motion path may define the motion of a layer in the composition.
    • 一种用于合成具有不同像素宽高比的第一和第二数字图像以减少图像内容的失真的方法。 该方法包括从第一和第二像素长宽比确定缩放因子; 按比例因子缩放第一个图像; 并将第一和第二图像合成为合成图像。 缩放步骤可以仅限于在水平方向上拉伸或挤压第一图像。 缩放步骤可以包括重新采样第一图像。 在另一方面,本发明的特征在于一种用于在具有非正方形像素的组合物中沿着运动路径控制运动的方法。 该方法包括基于合成像素长宽比来确定缩放因子; 将缩放因子应用于运动路径的副本; 重新参数化运动路径的副本以生成缩放的运动映射; 并且使用缩放的运动映射来控制沿运动路径的运动。 运动路径可以限定组合物中的层的运动。
    • 6. 发明授权
    • Method and apparatus for applying Gaussian Mixture Models to local image patches using an adaptive color lookup table
    • 使用自适应颜色查找表将高斯混合模型应用于局部图像补丁的方法和装置
    • US08290253B1
    • 2012-10-16
    • US12609590
    • 2009-10-30
    • Jue WangDavid P. SimonsXue Bai
    • Jue WangDavid P. SimonsXue Bai
    • G06K9/00
    • G06K9/6221G06K9/4652G06T7/11G06T7/149
    • A method, system, and computer-readable storage medium for applying Gaussian Mixture Models (GMMs) to local image patches using an adaptive color lookup table. Per-channel color quantization may be performed to find representative colors for a local image patch. Each combination of the representative values corresponds to a representative color. The probabilities of the representative colors may be computed using a local GMM color model and stored to corresponding entries in an adaptive color lookup table. For every pixel in an image patch, the closest representative color may be found, and the corresponding probability may be retrieved from the lookup table and used for the pixel. The method may, for example, be applied to each local window in a method for automatically determining segmentation in a digital video image sequence to calculate the foreground probabilities for the pixels in a propagated classifier via a GMM.
    • 一种用于使用自适应颜色查找表将高斯混合模型(GMM)应用于本地图像块的方法,系统和计算机可读存储介质。 可以执行每通道颜色量化以找到局部图像贴片的代表性颜色。 代表值的每个组合对应于代表性颜色。 代表颜色的概率可以使用本地GMM颜色模型计算并存储到自适应颜色查找表中的相应条目。 对于图像补丁中的每个像素,可以找到最接近的代表颜色,并且可以从查找表中检索相应的概率并将其用于该像素。 例如,该方法可以在用于自动确定数字视频图像序列中的分割的方法中应用于每个局部窗口,以通过GMM计算传播分类器中的像素的前景概率。