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基于語(yǔ)義特征的草莓目標(biāo)雙目匹配方法研究
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國(guó)家重點(diǎn)研發(fā)計(jì)劃項(xiàng)目(2018YFC1602701)和北方工業(yè)大學(xué)1138工程項(xiàng)目(110051360022XN108)


Binocular Matching Method for Strawberry Targets Based on Semantic Features
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    摘要:

    基于雙目相機(jī)的目標(biāo)定位系統(tǒng)具有起始距離短、精度高、成本低的優(yōu)點(diǎn),適用于空間受限的溫室草莓生產(chǎn)環(huán)境下的草莓目標(biāo)識(shí)別與定位應(yīng)用。準(zhǔn)確的目標(biāo)匹配是雙目相機(jī)實(shí)現(xiàn)有效測(cè)量的保障,但自然環(huán)境下草莓表面亮度和陰影區(qū)域變化較大,基于局部特征的雙目匹配方法難以獲得穩(wěn)定且準(zhǔn)確的匹配結(jié)果。本文研究了基于圖像語(yǔ)義特征的草莓目標(biāo)雙目匹配方法,在光照變化大、圖像紋理豐富、果實(shí)遮擋、圖像模糊等條件下語(yǔ)義特征能夠保持目標(biāo)描述的穩(wěn)定性,因此可提高草莓目標(biāo)雙目匹配的準(zhǔn)確性。首先設(shè)計(jì)了圖像中草莓目標(biāo)區(qū)域的語(yǔ)義特征提取方法,其次設(shè)計(jì)了基于語(yǔ)義特征的草莓目標(biāo)相似度計(jì)算方法以及雙目結(jié)構(gòu)的幾何約束條件,最終實(shí)現(xiàn)了溫室環(huán)境下草莓目標(biāo)雙目匹配。實(shí)驗(yàn)結(jié)果表明:溫室環(huán)境下本文方法的草莓目標(biāo)匹配正確率為96.3%,可為實(shí)際采摘環(huán)境下草莓目標(biāo)雙目定位系統(tǒng)提供良好的目標(biāo)匹配結(jié)果。

    Abstract:

    The binocular camera-based target localization system has the advantages of short starting distance, high accuracy, and low cost, which is suitable for strawberry target identification and localization applications in space-constrained greenhouse strawberry production environments. Accurate target matching is the guarantee of the effectiveness of binocular camera measurements, but the surface brightness and shadow areas of strawberries vary greatly in natural environments, and it is difficult to obtain stable and accurate matching results with the binocular matching method based on local features. A binocular strawberry target matching method was investigated based on image semantic features, which can maintain the stability of the target description under the conditions of large illumination changes, rich image texture, fruit occlusion, image blurring, etc., and therefore can improve the accuracy of binocular strawberry target matching. The semantic feature extraction method of the strawberry target region in the image was firstly designed, and secondly the strawberry target similarity calculation method was designed based on the semantic features and the geometric constraints of the binocular structure, and finally the binocular strawberry target matching in the greenhouse environment was realized. The experimental results showed that the correct rate of strawberry target matching applied to the greenhouse environment by the method was 96.3%, which can provide good target matching results for the strawberry target binocular localization system under the actual picking environment.

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畢松,張東航.基于語(yǔ)義特征的草莓目標(biāo)雙目匹配方法研究[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2025,56(5):415-424. BI Song, ZHANG Donghang. Binocular Matching Method for Strawberry Targets Based on Semantic Features[J]. Transactions of the Chinese Society for Agricultural Machinery,2025,56(5):415-424.

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  • 收稿日期:2024-03-08
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  • 在線發(fā)布日期: 2025-05-10
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