# Products-Detection-and-Retrieval
自动售货机商品检测检索
* [模型权重下载(百度云)](https://pan.baidu.com/s/1JeicjkWVYDpyrTDGI7bKKA ) 提取码:1f7i
## 任务描述
对于自动售货机摄像头拍摄的静态数据,进行商品的检测,并按照图像检索的方式确定商品类别
<img src="main/imgs/1.png" height="500" />
## 阶段一
### 检测:
* Faster RCNN : resnext101_32x8d + ROIAlign
* objectness二分类,CIOU Loss
### 检索:
* CE Loss 预训练
* Triplet Loss, ArcFace 微调
* KNN, k=10, cosine distance
* 商品库图像数量平衡,提取特征平衡两种方案,防止KNN聚类的对于少量样本(商品库样本数量最少为2)的类别无法有效聚类。
<img src="main/imgs/7.jpg" width="100%" />
### 问题分析:
* 长尾分布
<img src="main/imgs/2.png" width="100%" />
* 遮挡问题
<img src="main/imgs/3.png" height="200" />
* 罐装,盒装,瓶装商品高宽差距较大。解决方案:KMean聚类
<p float="left">
<img src="main/imgs/4.jpg" height="200" />
<img src="main/imgs/5.jpg" height="200" />
</p>
<img src="main/imgs/6.png" height="300" />
* 光照影响明显
<p float="left">
<img src="main/imgs/8.jpg" height="200" />
<img src="main/imgs/9.jpg" height="200" />
</p>
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温馨提示
【作品名称】:基于 python 实现的自动售货机商品检测检索 【适用人群】:适用于希望学习不同技术领域的小白或进阶学习者。可作为毕设项目、课程设计、大作业、工程实训或初期项目立项。 【项目介绍】:对于自动售货机摄像头拍摄的静态数据,进行商品的检测,并按照图像检索的方式确定商品类别 阶段一 检测: Faster RCNN : resnext101_32x8d + ROIAlign objectness二分类,CIOU Loss 检索: CE Loss 预训练 Triplet Loss, ArcFace 微调 KNN, k=10, cosine distance 商品库图像数量平衡,提取特征平衡两种方案,防止KNN聚类的对于少量样本(商品库样本数量最少为2)的类别无法有效聚类。
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