IMAGING SYSTEM AND METHOD USING A MULTI-LAYER MODEL APPROACH TO PROVIDE ROBUST OBJECT DETECTION

    公开(公告)号:EP4131177A1

    公开(公告)日:2023-02-08

    申请号:EP22187134.6

    申请日:2022-07-27

    IPC分类号: G06V10/20 G06V10/46

    摘要: A system and method of detecting an image of a template object in a captured image may include comparing, by a processor, an image model of an imaged template object to multiple locations, rotations, and scales in the captured image. The image model may be defined by multiple model base point sets derived from contours of the imaged template object, where each model base point set inclusive of a plurality of model base points that are positioned at corresponding locations associated with distinctive features of the imaged template object. Each corresponding model base point of the model base point sets may (i) be associated with respective layers and (ii) have an associated gradient vector. A determination may be made as to whether and where the image of the object described by the image model is located in the captured image.

    DESCRIBING OBJECTS USING EDGE-PIXEL-FEATURE DESCRIPTORS
    3.
    发明公开
    DESCRIBING OBJECTS USING EDGE-PIXEL-FEATURE DESCRIPTORS 审中-公开
    使用边缘 - 像素 - 特征描述符描述对象

    公开(公告)号:EP2946338A1

    公开(公告)日:2015-11-25

    申请号:EP13709563.4

    申请日:2013-01-21

    IPC分类号: G06K9/46

    摘要: During a description technique, a local descriptor for an object may be generated by computing a 2-dimensional histogram of pairs of angles between pairs of line segments that are aligned with edge pixels associated with the object. The pairs of line segments belong to a subset of k neighboring or proximate line segments. Moreover, this 2D histogram may represent the relative displacement and the relative orientations of the pairs of line segments in the subset as weights in bins or cells defined by angular quantization values, and the 2D histogram may exclude lengths of the line segments. Subsequently, the generated 2D histogram may be compared to predefined sets of descriptors in a model library that are associated with a set of objects, and the object may be identified as one of the set of objects based on a group of match scores determined in the comparisons.

    摘要翻译: 在描述技术(100)期间,通过计算线段对(510,512)之间的角度对(514,516)对的二维直方图(600)来生成(122)对象(300)的局部描述符 ),其与对象(300)相关联的边缘像素对齐。 线段对(510,512)属于k个相邻或相邻线段(310)的子集。 此外,该2D直方图(600)可将子集中的线段对(510,512)的相对位移和相对取向表示为由角度量化值定义的仓或单元中的权重,并且2D直方图(600可以 随后,可以将生成的2D直方图(600)与模型库中与一组对象相关联的预定义描述符集进行比较(210),并且该对象可以被识别(212)为 基于在比较中确定的一组比赛分数的一组对象之一。