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融合特征金字塔與可變形卷積的高密度群養(yǎng)豬計數(shù)方法
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北京市自然科學(xué)基金項目(4202029)


High-density Pig Herd Counting Method Combined with Feature Pyramid and Deformable Convolution
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    摘要:

    針對豬只人工計數(shù)方法消耗時間和勞動力,育肥豬較為活躍且喜好聚集,圖像中存在大量的高密度區(qū)域,導(dǎo)致豬只之間互相粘連、遮擋等問題,基于SOLO v2實例分割算法,提出了一種自然養(yǎng)殖場景下融合多尺度特征金字塔與二代可變形卷積的高密度群養(yǎng)豬計數(shù)模型。通過優(yōu)化模型結(jié)構(gòu)來減少計算資源的消耗與占用。將科大訊飛給出的豬只計數(shù)的公開數(shù)據(jù)集劃分為豬只分割數(shù)據(jù)集和豬只盤點測試集,利用豬只分割數(shù)據(jù)集獲得較好的分割模型,然后在豬只盤點測試集中測試盤點準(zhǔn)確率,實現(xiàn)豬群分割和豬只計數(shù)。實驗結(jié)果表明,本文提出的高密度豬只計數(shù)模型的分割準(zhǔn)確率達(dá)到96.7%,且模型內(nèi)存占用量為256MB,為改進(jìn)前的2/3,實現(xiàn)了遮擋、粘連和重疊情況下的豬只個體高準(zhǔn)確率分割。在含有500幅豬只圖像計數(shù)測試集中,模型計算豬只數(shù)量誤差為0時的圖像數(shù)量為207幅,較改進(jìn)前提高26%。模型計算豬只數(shù)量誤差小于2頭豬的圖像數(shù)量占測試圖像總數(shù)量的97.2%。模型計算豬只數(shù)量誤差大于3頭豬的圖像數(shù)量占總體圖像數(shù)量比例僅為1%。最后,對比基于YOLO v5的群養(yǎng)豬計數(shù)方法,本文模型具有更優(yōu)的分割效果和計數(shù)準(zhǔn)確率,驗證了本文方法對群養(yǎng)豬只計數(shù)的有效性。因此,本文模型既實現(xiàn)了高密度豬群的精準(zhǔn)計數(shù),還通過優(yōu)化模型結(jié)構(gòu)大大降低了模型對計算設(shè)備的依賴,使其適用于養(yǎng)殖場內(nèi)豬群在線計數(shù)。

    Abstract:

    Pig counting is a critical task in large-scale breeding and intelligent management, and the manual counting method is time-consuming and labor-intensive. Since fattening pigs are more active and like to congregate, there are many high-density areas in the image, which causes problems such as adhesion and occlusion between pigs, making pig counting difficult. Based on the SOLO v2 instance segmentation algorithm, a high-density group pig counting model in natural breeding scenarios was proposed, which incorporated multi-scale feature pyramids and deformable convolutions networks version 2. Further, by optimizing the model structure, the consumption and occupation of computing resources were reduced. The pig count dataset published by iFLYTEK was divided into two parts: pig segmentation dataset and pig count test set. The pig segmentation dataset was used to train the segmentation model to achieve herd segmentation and pig counts, and the inventory accuracy was tested in the pig inventory test set. The experimental results showed that the high-density pig counting model proposed had a segmentation accuracy of 96.7% and a model weight size of 256 MB, which was 1/3 less than that before the improvement. Each improved method proposed improved the model's segmentation accuracy and achieved highaccuracy segmentation of individual pigs in the case of occlusion, adhesion, and overlap. In the 500 image pig counting test set, the number of images when the model counted pigs with an error of 0 was 207, which was 26% more than that before the improvement. The number of images when the error of the model counting pigs was less than two pigs, accounted for 97.2% of the total number of test images. The number of images with a counting error of more than three pigs, accounted for only 1% of the total number of images. Finally, for the pig herd counting method based on YOLO v5, the model had a better segmentation effect and counting accuracy, proving the methods effectiveness for counting pigs in groups. Therefore, the model presented not only achieved accurate counting of high-density pig herds, but it also significantly reduced the model's reliance on computing equipment by optimizing the model structure, which made it suitable for online counting of pig herds on real farms.

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王榮,高榮華,李奇峰,馮璐,白強,馬為紅.融合特征金字塔與可變形卷積的高密度群養(yǎng)豬計數(shù)方法[J].農(nóng)業(yè)機械學(xué)報,2022,53(10):252-260. WANG Rong, GAO Ronghua, LI Qifeng, FENG Lu, BAI Qiang, MA Weihong. High-density Pig Herd Counting Method Combined with Feature Pyramid and Deformable Convolution[J]. Transactions of the Chinese Society for Agricultural Machinery,2022,53(10):252-260.

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  • 收稿日期:2022-04-17
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  • 在線發(fā)布日期: 2022-07-25
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