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基于自適應(yīng)鄰域Harris算子的三維對(duì)象檢索方法
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國(guó)家自然科學(xué)基金資助項(xiàng)目(61203019)、湖南省自然科學(xué)基金資助項(xiàng)目(14JJ7071、13JJ9022)和湖南省科技計(jì)劃資助項(xiàng)目(2013GK3029)


3-D Object Retrieval Method Based on Adaptive Neighborhood Harris Operator
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    摘要:

    針對(duì)三維對(duì)象檢索過程中在對(duì)象旋轉(zhuǎn)、灰度改變等復(fù)雜情況下檢索精度不高的問題,提出一種三維對(duì)象檢索方法。將Harris算子擴(kuò)展運(yùn)用到三維對(duì)象,自適應(yīng)地確定頂點(diǎn)的鄰域大小,然后根據(jù)Harris函數(shù)響應(yīng)值選取興趣點(diǎn)。利用興趣點(diǎn)構(gòu)建三維對(duì)象具有全局形狀特征的距離直方圖,將距離直方圖作為三維形狀的描述符進(jìn)行檢索。實(shí)驗(yàn)結(jié)果驗(yàn)證了算法的有效性,提高了檢索的查全率和查準(zhǔn)率。

    Abstract:

    The detection, characterization, and matching of various 3-D features from visual observations is important for a large variety of applications such as modeling, tracking, recognition or indexing. The existing methods detect features by using either photometric information available with geometric information available with 3-D surfaces. To deal with the low retrieval accuracy problem in complex situation of 3-D objects retrieval, such as 3-D objects rotation and brightness changing, and a 3-D objects retrieval method was proposed. The Harris operator was extended the use of 3-D objects, and an adaptive technique was proposed to determine the neighborhood of a vertex. Then the significant interest points were chosen with the Harris response function value. To construct the global shape features distance histogram of 3-D objects with interest points, the distance histogram was used as the 3-D shape descriptor for 3-D object retrieval. Extensive experimental results demonstrated that the proposed method was robust to affine transformations and distortion transformation such as noise addition. Moreover, the distribution of interest points on the surface of an object remains similar in transformed objects, which is a desirable behavior in applications such as shape matching and object registration.

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劉洞波,肖 鵬,屈喜龍,張細(xì)政.基于自適應(yīng)鄰域Harris算子的三維對(duì)象檢索方法[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2015,46(1):373-378. Liu Dongbo, Xiao Peng, Qu Xilong, Zhang Xizheng.3-D Object Retrieval Method Based on Adaptive Neighborhood Harris Operator[J]. Transactions of the Chinese Society for Agricultural Machinery,2015,46(1):373-378.

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  • 收稿日期:2014-02-10
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  • 在線發(fā)布日期: 2015-01-10
  • 出版日期: 2015-01-10