公开(公告)号：US20130279762A1

公开(公告)日：2013-10-24

申请号：US13869656

申请日：2013-04-24

Applicant: STMICROELECTRONICS S.R.I.

Inventor： Danilo Pietro Pau ,  Paolo Pasteris ,  Mirko Falchetto

IPC: G06T7/20

CPC classification number: G06K9/6228 ,  G06K9/32 ,  G06K9/46 ,  G06K2009/363 ,  G06T7/33 ,  G06T7/337 ,  H04N19/57

Abstract: Image-processing apparatus and methods to adaptively control a size and/or location of a visual search window used for feature matching in a machine-vision system are described. A search window controller may receive motion vector data and image recognition rate data, and compute a search window size and/or search window location based on the received data. The computed search window size may be a portion of an image frame. The motion vector data and image recognition rate data may be computed from one or more images in a video image sequence. By adaptively controlling search window size and location, an appreciable reduction in data processing burden for feature matching may be achieved.

Abstract translation: 描述了在机器视觉系统中自适应地控制用于特征匹配的视觉搜索窗口的尺寸和/或位置的图像处理设备和方法。 搜索窗口控制器可以接收运动矢量数据和图像识别率数据，并且基于接收到的数据来计算搜索窗口大小和/或搜索窗口位置。 所计算的搜索窗口大小可以是图像帧的一部分。 可以从视频图像序列中的一个或多个图像计算运动矢量数据和图像识别率数据。 通过自适应地控制搜索窗口大小和位置，可以实现特征匹配的数据处理负担的明显降低。