公开(公告)号：US20030026498A1

公开(公告)日：2003-02-06

申请号：US10171793

申请日：2002-06-14

Applicant: STMicroelectronics, S.r.I.

Inventor： Daniele Sirtori ,  Matteo Maravita

IPC: G06K009/40 ,  G06K009/64

CPC classification number: H04N7/012

Abstract: The conversion into a progressive format of digital images organized in half-frames or fields with interlaced lines or rows envisages selecting successive lines in one or more of said fields and reconstructing by pixels an image line set between the interlaced lines selected. The reconstruction operation obtains the image by creating a set of candidate patterns associated to the work window by selecting the patterns to be considered within the window. Next, applying to the patterns of the aforesaid set a first cost function which is representative of the correlations between pairs of pixels. Applying to the patterns of the aforesaid set a second cost function which is representative of the non-correlations between pairs of pixels. Selecting, for each candidate pattern, respective internal correlations and external non-correlations, calculating corresponding scores for the candidate patterns using the aforesaid first cost function. Selecting a best pattern by comparing the respective scores of the candidate patterns with at least one threshold; and selecting the pixels of the window identified by the best pattern selected, then reconstructing the missing line by filtration starting from said pixels.

Abstract translation: 以半帧或具有交错行或行的场的数字图像的逐行格式的转换设想在一个或多个所述场中选择连续的行，并且通过像素重建在所选择的交织行之间设置的图像行。 重建操作通过选择在窗口内考虑的模式来创建与工作窗口相关联的一组候选模式来获得图像。 接下来，应用上述的图案设置表示像素对之间的相关性的第一成本函数。 应用上述的图案设置表示像素对之间的非相关性的第二成本函数。 对于每个候选模式，选择各自的内部相关性和外部非相关性，使用前述第一成本函数计算候选模式的相应分数。 通过将候选模式的各个分数与至少一个阈值进行比较来选择最佳模式; 并选择由所选择的最佳图案标识的窗口的像素，然后从所述像素开始重新构建缺失的线。