公开(公告)号：WO2016071281A1

公开(公告)日：2016-05-12

申请号：PCT/EP2015/075469

申请日：2015-11-02

Applicant: PHOTRACK AG

Inventor： LÜTHI, Beat ,  PHILIPPE, Thomas ,  PEÑA-HARO, Salvador

IPC: G01P5/18 ,  G01P5/22 ,  G01P5/00 ,  G01F1/712 ,  G01F23/00 ,  G01C13/00 ,  G01F1/00 ,  G06T7/20

CPC classification number: G01P5/18 ,  G01C13/006 ,  G01C13/008 ,  G01F1/002 ,  G01F1/7086 ,  G01F1/712 ,  G01P5/001 ,  G01P5/22 ,  G06T7/254 ,  Y02A90/32

Abstract: The invention relates to a method for determining the velocity of a moving fluid surface, which comprises the following steps S1 to S5: - S1) taking a sequence of images of the moving fluid surface by at least one camera; - S2) comparing a first image from the sequence with a second image from the sequence in order to distinguish moving patterns of the fluid surface from non-moving parts and to obtain a first processed image (im_1f) comprising the moving patterns; - S3) comparing a third image from the sequence with a fourth image from the sequence in order to distinguish moving patterns of the fluid surface from non-moving parts and to obtain a second processed image (im_2f) comprising the moving patterns; - S4) comparing the first and second processed images in order to determine the spatial displacements of the moving patterns; and - S5) determining from the spatial displacements the velocity.

Abstract translation: 本发明涉及一种用于确定移动流体表面的速度的方法，其包括以下步骤S1至S5：S1）通过至少一个照相机拍摄移动流体表面的一系列图像; S2）将来自序列的第一图像与来自序列的第二图像进行比较，以便区分流体表面与非移动部分的移动图案并获得包括运动图案的第一经处理图像（im_1f）; - S3）将来自序列的第三图像与来自序列的第四图像进行比较，以便区分流体表面与非移动部分的移动图案并且获得包括运动图案的第二处理图像（im_2f）; S4）比较第一和第二处理图像，以便确定运动图案的空间位移; 和 - S5）从空间位移确定速度。