筛选极坐标投影幅值特征的象棋定位与识别
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西安科技大学研究生院,西安科技大学 电气与控制工程学院

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TP391

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Chess Location and Recognition by Screening the Feature of Polar Coordinates Projection Amplitude
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Xi''an University of Science And Technology Graduate School,

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    摘要:

    为保证象棋机器人视觉系统中棋盘棋位检测、棋子定位与识别的准确性,本文首先利用梯度法获取棋盘区域,比例法得到棋位坐标,然后在棋位处的子域利用霍夫变换判断棋子存在性并获取棋子圆心坐标,Lab的a分量分割判断棋子颜色,利用极坐标投影,快速傅里叶变换提取特征,最后皮尔逊相关系数进行特征筛选,欧式距离进行12类字体的分类。对训练集和测试集采集的576和 1024个不同位置角度的棋子样本分别进行测试,子域内棋子存在性、棋子棋位编号以及棋子颜色判断的错误率都为0。利用训练集获得字体类中心后,在训练集和测试集分别进行字体识别测试,筛选字体特征的识别方法的错误率为0.17%(错1个)和0.29%(错3个),与不进行特征筛选的方法相比,错误率分别降低了0.35%和0.39%。表明本论文棋位检测、棋子定位与识别方法的优秀性能,为构建象棋机器人视觉系统打下算法基础。

    Abstract:

    In order to ensure the accuracy of checkerboard chess position detection, the location and recognition of the chessman in the chess visual system. In this paper, we first use the gradient method to obtain the board area, and the proportional method obtains the chess coordinate. Then use the Hough transformation to determine the existence of the chessmen and obtain chessman center coordinates in a subdomain at the chess position. ‘A’ component of Lab segmentation judges the color of the chessmen. Polar coordinates projection and fast Fourier transform are used to extract features. Finally, the Pearson correlation coefficient is selected for feature selection, and the Euclidean distance is classified for 12 types of fonts. 576 and 1024 chessman samples collected from the training set and the test set are tested respectively. The error rate of existence of chessmen, the number of chess position and the chess color judgment in the subdomain are all 0. After using the training set to get the font class center, the font recognition test is carried out in the training set and the test set. The error rates of the methods of the filtered fonts characteristics for identifying is 0.17% (wrong 1) and 0.29% (wrong 3). The error rates were reduced by 0.35% and 0.39%, respectively, compared with the non-feature-based method. The experimental results show the excellent performance of the chess position detection, the chessmen location and the recognition method. It lays the algorithm foundation for the construction of a chess robot vision system.

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郭建欣,陈文燕. 筛选极坐标投影幅值特征的象棋定位与识别[J]. 科学技术与工程, 2018, 18(21): .
guojianxin and. Chess Location and Recognition by Screening the Feature of Polar Coordinates Projection Amplitude[J]. Science Technology and Engineering,2018,18(21).

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  • 收稿日期:2018-02-04
  • 最后修改日期:2018-04-10
  • 录用日期:2018-04-18
  • 在线发布日期: 2018-07-30
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