公开(公告)号：WO2009053978A3

公开(公告)日：2010-03-11

申请号：PCT/IL2008001398

申请日：2008-10-23

Applicant: TECHNION RES & DEV FOUNDATION ,  ELAD MICHAEL ,  PROTTER MATAN

Inventor： ELAD MICHAEL ,  PROTTER MATAN

IPC: H04N11/20

CPC classification number: G06T3/4053

Abstract: The subject matter discloses a method and apparatus for re-sampling a sequence of images in order to improve its resolution, fill-in missing pixels, or de-interlace it. The method operates locally in the images to be processed, comparing pixel values of pixels surrounding the target pixel to pixel values of substantially the same locations in neighboring images. The comparison results in assigning a weight value for each area compared with the area containing the reviewed pixel. The pixel value of the reviewed pixel is updated as a function of multiplying pixel values of the areas by the weight assigned to each area. In another embodiment, areas within the same image are compared to areas containing the reviewed pixel. The subject matter also discloses two possible penalty functions for improving the resolution of images.

Abstract translation: 主题公开了一种用于重新采样图像序列的方法和装置，以便提高其分辨率，填充缺失像素或去隔行扫描。 该方法在要处理的图像中局部地操作，将目标像素周围的像素的像素值与相邻图像中基本相同位置的像素值进行比较。 比较结果是与包含经审查的像素的区域相比，为每个区域分配权重值。 被评估的像素的像素值被更新为将区域的像素值乘以分配给每个区域的权重的函数。 在另一个实施例中，将同一图像内的区域与包含经审查的像素的区域进行比较。 主题还公开了用于改善图像分辨率的两种可能的惩罚功能。

公开(公告)号：WO2006106508A3

公开(公告)日：2007-05-31

申请号：PCT/IL2006000423

申请日：2006-04-04

Applicant: TECHNION RES & DEV FOUNDATION ,  AHARON MICHAL ,  ELAD MICHAEL ,  BRUCKSTEIN ALFRED

Inventor： AHARON MICHAL ,  ELAD MICHAEL ,  BRUCKSTEIN ALFRED

IPC: H03M7/00

CPC classification number: G06K9/6249 ,  H04N19/97

Abstract: A signal processing system adapted for sparse representation of signals is provided, comprising: (i)one or more training signals; (ii) a dictionary containing signal-atoms; (iii) a representation of each training signal using a linear combination of said dictionary's signal-atoms; (iv) means for updating the representation of the training signal; (v) means for updating the dictionary one group of atoms at a time, wherein each atom update may include all representations referring to said updated atom; and (vi) means for iterating (iv) and (v) until a stopping rule is fulfilled. The system uses the K-SVD algorithm for designing dictionaries for sparse representation of signals.

Abstract translation: 提供了适用于信号稀疏表示的信号处理系统，包括：（i）一个或多个训练信号; （ii）包含信号原子的字典; （iii）使用所述字典的信号原子的线性组合的每个训练信号的表示; （iv）用于更新训练信号的表示的装置; （v）用于一次更新字典一组原子的装置，其中每个原子更新可以包括引用所述更新的原子的所有表示; 和（vi）在满足停止规则之前迭代（iv）和（v）的手段。 该系统使用K-SVD算法设计信号稀疏表示的词典。