公开(公告)号：US20040027454A1

公开(公告)日：2004-02-12

申请号：US10462090

申请日：2003-06-13

Applicant: STMicroelectronics S.r.I.

Inventor： Filippo Vella ,  Massimo Mancuso

IPC: H04N007/18

CPC classification number: G06T7/215

Abstract: A method of estimating a global motion vector representative of the motion of a first digital image with respect to a second digital image, the first and the second image forming part of a sequence of images and being made up of, respectively, a first and a second pixel matrix. The method estimates the global motion vector on the basis of the estimate of at least one motion vector of at least one region of the first image representative of the motion of the at least one region from the first image to the second image and comprising phases of: subdividing the at least one region of the first image into a plurality of pixel blocks, assigning to each block of the plurality a respective weighting coefficient calculated on the basis of a respective inhomogeneity measure, and estimating the at least one motion vector of said at least one region on the basis of the weighting coefficients assigned to each block of the at least one region.

Abstract translation: 一种估计表示第一数字图像相对于第二数字图像的运动的全局运动矢量的方法，所述第一和第二图像形成图像序列的一部分，并且分别由第一和第二数字图像构成 第二像素矩阵。 该方法基于对从第一图像到第二图像的至少一个区域的运动的第一图像的至少一个区域的至少一个运动矢量的估计来估计全局运动矢量，并且包括 将所述第一图像的至少一个区域细分为多个像素块，向所述多个像素块中的至少一个运动矢量分配所述多个像素块中的所述至少一个运动矢量， 基于分配给所述至少一个区域的每个块的加权系数的至少一个区域。

公开(公告)号：US20040174441A1

公开(公告)日：2004-09-09

申请号：US10732186

申请日：2003-12-10

Applicant: STMicroelectronics S.r.I

Inventor： Alfio Castorina ,  Sebastiano Battiato ,  Mirko Guarnera ,  Filippo Vella

IPC: H04N009/73 ,  H04N005/235 ,  H04N005/217

CPC classification number: H04N5/23293 ,  H04N9/73

Abstract: A method of processing digital video signals produced by a sensor that are to be presented on a viewfinder, the method involving: a first pair of processing operations for scaling and color interpolation; and a second pair of processing operations for the formation of a color matrix and for white balancing. The operations of at least one, and preferably of both of the pairs of processing operations are executed in a single step. The operation of white balancing is moreover performed only for one frame out of K frame in the frame sequence. The preferential application is in the construction of viewfinders for videocameras and digital still cameras.

Abstract translation: 一种处理要呈现在取景器上的由传感器产生的数字视频信号的方法，所述方法涉及：用于缩放和颜色插值的第一对处理操作; 以及用于形成彩色矩阵和用​​于白平衡的第二对处理操作。 在一个步骤中执行至少一个，优选两个处理操作对的操作。 此外，在帧序列中仅对K帧中的一帧执行白平衡的操作。 优先应用是为视频摄像机和数码相机拍摄取景器。