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    • 2. 发明申请
    • METHOD AND IMAGE-PROCESSING DEVICE FOR HOLE FILLING
    • 用于孔填充的方法和图像处理装置
    • US20100289815A1
    • 2010-11-18
    • US12863799
    • 2009-01-21
    • Christiaan VarekampReinier Bernardus Maria Klein Gunnewiek
    • Christiaan VarekampReinier Bernardus Maria Klein Gunnewiek
    • G09G5/00G06K9/40
    • G06T5/005G06T2207/10016G06T2207/20192
    • The present invention relates to an image-processing device and a method of assigning pixel values to adjacent pixel locations in an image (705) having unassigned pixel values. The method comprises the steps of generating first propagation pixel values (730) and first propagation weights (735) for propagating the first propagation pixel values (730) along a first direction towards the adjacent pixel locations by: generating the first propagation pixel values (730) for propagation to the adjacent pixel locations in the first direction, the first propagation pixel values (730) being based at least on assigned pixel values in a first region adjacent to the unassigned pixel locations; generating first propagation weights (735) for the first propagation pixel values (730) to account for discontinuities in pixel values of assigned pixel values in a second region adjacent to the hole along the first direction, such that the occurrence of a discontinuity in said assigned pixel values along the first direction results in lower first propagation weights (735); and assigning pixel values to the adjacent pixel locations based at least in part on the first propagation pixel values (730) and first propagation weights (735). The invention further relates to a computer program and a computer program product comprising the program for implementing the method.
    • 本发明涉及一种图像处理装置和将像素值分配给具有未分配像素值的图像(705)中的相邻像素位置的方法。 该方法包括以下步骤:通过以下步骤:产生第一传播像素值(730)和第一传播权重(735),用于通过以下步骤:沿着第一方向向相邻像素位置传播第一传播像素值(730):产生第一传播像素值(730 ),用于传播到所述第一方向上的相邻像素位置,所述第一传播像素值(730)至少基于与所述未分配像素位置相邻的第一区域中分配的像素值; 为所述第一传播像素值(730)产生第一传播权重(735)以解决沿着所述第一方向与所述孔相邻的第二区域中所分配的像素值的像素值的不连续性,使得所述分配的 沿着第一方向的像素值导致较低的第一传播权重(735); 以及至少部分地基于所述第一传播像素值(730)和所述第一传播权重(735)将像素值分配给所述相邻像素位置。 本发明还涉及包括用于实现该方法的程序的计算机程序和计算机程序产品。
    • 5. 发明授权
    • Video compression
    • 视频压缩
    • US07010034B2
    • 2006-03-07
    • US09840812
    • 2001-04-24
    • Wilhelmus Hendrikus Alfonsus BrulsReinier Bernardus Maria Klein Gunnewiek
    • Wilhelmus Hendrikus Alfonsus BrulsReinier Bernardus Maria Klein Gunnewiek
    • H04N7/12
    • H04N19/177H04N19/114H04N19/61
    • The concept of B-frames gives the MPEG video compression standard its high encoding efficiency. However, B-frame encoding roughly doubles the complexity of an MPEG encoder. In view thereof, MPEG encoders have been developed which produce I-frames and P-frames only. They are less complex but also less efficient. To improve the efficiency of such “IPP encoders”, selected P-frames are quantized more coarsely than other P-frames, for example, by multiplying the conventional quantization step size by 1.4. Although this results in isolated frames (“virtual B-frames”) being encoded with a lower quality, the overall perceptual quality is not affected. It has been found that the gain in bit rate obtained by the coarser quantization is not lost in subsequent P-frames, even though the subsequent frames are encoded with reference to the lower quality frames.
    • B帧的概念为MPEG视频压缩标准提供了高编码效率。 然而,B帧编码大致使MPEG编码器的复杂度增加一倍。 鉴于此,已经开发出仅产生I帧和P帧的MPEG编码器。 它们不那么复杂,但效率也不高。 为了提高这种“IPP编码器”的效率,例如通过将常规量化步长乘以1.4,所选择的P帧比其他P帧更粗略地被量化。 虽然这导致隔离的帧(“虚拟B帧”)以较低的质量被编码,但整体感知质量不受影响。 已经发现,即使随后的帧被参照较低质量帧进行编码,通过较粗略量化得到的比特率的增益也不会在随后的P帧中丢失。
    • 7. 发明授权
    • Creation of depth maps from images
    • 从图像创建深度图
    • US08937645B2
    • 2015-01-20
    • US13139862
    • 2009-12-14
    • Patrick Luc E. VandewalleChristiaan VarekampReinier Bernardus Maria Klein Gunnewiek
    • Patrick Luc E. VandewalleChristiaan VarekampReinier Bernardus Maria Klein Gunnewiek
    • H04N13/02G06T7/00
    • G06T7/0065G06T7/55G06T2207/10012G06T2207/10021G06T2207/30228
    • A method of generating a plurality of depth maps for a plurality of images comprises receiving a first image, obtaining information relating to the shot defined by the first image, generating a depth map for the first image according to a first schema, receiving a second image, obtaining information relating to the shot defined by the second image, detecting a change in the obtained information between the first and second image, and generating a depth map for the second image according to a second schema, the second schema having a complexity different from that of the first schema. The method can comprise accessing first and second depth models. In one embodiment, the first schema comprises the first depth model, and the second schema comprises the second model, and in a second embodiment the first schema comprises the first depth model, and the second schema comprises a combination of the first and the second depth models.
    • 为多个图像生成多个深度图的方法包括:接收第一图像,获得与由第一图像定义的拍摄有关的信息,根据第一图案生成第一图像的深度图,接收第二图像 获取与由第二图像定义的拍摄有关的信息,检测所获得的第一和第二图像之间的信息的变化,并根据第二模式生成第二图像的深度图,第二模式具有不同于 第一个模式的。 该方法可以包括访问第一和第二深度模型。 在一个实施例中,第一模式包括第一深度模型,并且第二模式包括第二模型,并且在第二实施例中,第一模式包括第一深度模型,并且第二模式包括第一和第二深度 楷模。
    • 9. 发明授权
    • Motion vector fields refinement to track small fast moving objects
    • 运动矢量场细化以跟踪小型快速移动物体
    • US08102915B2
    • 2012-01-24
    • US10577105
    • 2004-10-19
    • Reinier Bernardus Maria Klein GunnewiekFrederik Jan De Bruijn
    • Reinier Bernardus Maria Klein GunnewiekFrederik Jan De Bruijn
    • H04N7/12H04N7/137H04N7/36
    • H04N19/553G06T7/207
    • A conversion unit for converting a first motion vector field (MVF1) into a second motion vector field (MVF2). The first motion vector field being computed, on basis of a first image and a second image of a sequence of images, for a temporal position between the first and second images. A first establishing means establishes a first group of un-referenced pixels in the first image. A second establishing means establishes a second group of un-referenced pixels in the second image. A computing means computes a match error of a candidate motion vector oriented from the first group of un-referenced pixels to the second group of un-referenced pixels. A comparing means for comparing the match error with a predetermined match threshold and assigning the candidate motion vector to one of the motion vectors of the second motion vector field if the match error is below the predetermined match threshold.
    • 用于将第一运动矢量场(MVF1)转换为第二运动矢量场(MVF2)的转换单元。 基于图像序列的第一图像和第二图像计算第一和第二图像之间的时间位置的第一运动矢量场。 第一建立装置在第一图像中建立第一组未参考像素。 第二建立装置在第二图像中建立第二组未参考像素。 计算装置计算从第一组未参考像素到第二组未参考像素的候选运动矢量的匹配误差。 比较装置,用于将匹配误差与预定匹配阈值进行比较,并且如果匹配误差低于预定匹配阈值,则将候选运动矢量分配给第二运动矢量场的运动矢量之一。
    • 10. 发明申请
    • MOTION VECTOR FIELD PROJECTION DEALING WITH COVERING AND UNCOVERING
    • 运动矢量场投影处理与覆盖和去除
    • US20090147851A1
    • 2009-06-11
    • US11719782
    • 2005-11-17
    • Reinier Bernardus Maria Klein GunnewiekRimmert WittebroodRalph Braspenning
    • Reinier Bernardus Maria Klein GunnewiekRimmert WittebroodRalph Braspenning
    • H04N7/26
    • H04N19/521H04N19/513H04N19/553H04N19/573
    • The method for high efficiency video signal compression comprises: a) calculating a first motion vector field (MvI) at a temporal location (t3) of a third video picture (125) by using pixel data of a second video picture (123) and the third video picture; b) calculating a second motion vector field (Mv2) at a temporal location (t2) of the second video picture (123), in which second motion vector field (Mv2) a foreground motion region (rFG2) composed of positions of foreground motion vectors, having a magnitude substantially equal to the motion of a foreground object (101), substantially collocates spatially with positions of pixels of the foreground object (101) and not with pixels of a background object (103, 103′); c) correcting erroneous foreground motion vectors (rERR) in an uncovering region of the first motion vector field (MvI) on the basis of the second motion vector field (Mv2); d) determining in a region (COV) of the first motion vector field corresponding to covering of background object pixels by the foreground object which of two vectors, projecting to a same spatial position in a future picture, is a foreground motion vector (vFG) and which is a background motion vector (vBG); e) projecting motion vectors of the first motion vector field to a temporal location (t4) of a fourth video picture (127) to be predicted, obtaining a third motion vector field (Mv3), comprising allocating a foreground motion vector (vFG) in the case of two vectors projecting to the same spatial position in the third motion vector field (Mv3); and f) predicting the fourth video picture (127) by using the third motion vector field (Mv3) for determining positions of pixels to be fetched from at least one previous image (125).
    • 用于高效率视频信号压缩的方法包括:a)通过使用第二视频图像(123)的像素数据在第三视频图像(125)的时间位置(t3)处计算第一运动矢量场(Mv1),并且 第三视频图片; b)在第二视频图像(123)的时间位置(t2)处计算第二运动矢量场(Mv2),其中第二运动矢量场(Mv2)由前景运动矢量的位置组成的前景运动区域(rFG2) 具有基本上等于前景物体(101)的运动的大小的幅度,基本上与空间上与前景物体(101)的像素的位置并置,而不与背景物体(103,103')的像素并置; c)基于第二运动矢量场(Mv2)在第一运动矢量场(Mv1)的露出区域中校正错误的前景运动矢量(rERR); d)通过前景对象来确定与背景物体像素的覆盖相对应的第一运动矢量场的区域(COV),在向后图像中投射到相同空间位置的两个向量中的哪一个是前景运动矢量(vFG) 并且其是背景运动矢量(vBG); e)将第一运动矢量场的运动矢量投影到要预测的第四视频图像(127)的时间位置(t4),获得第三运动矢量场(Mv3),包括将前景运动矢量(vFG) 在第三运动矢量场(Mv3)中投射到相同空间位置的两个矢量的情况; 以及f)通过使用用于确定要从至少一个先前图像(125)获取的像素的位置的第三运动矢量场(Mv3)来预测第四视频图像(127)。