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CVPR_homeworks

保存大三上CVPR课程作业与笔记.

Homework4

基于Caltech 256 数据集的深度网络分类性能比较,不少于三种深度网络结构,且全部模型精度不低于85%

Caltech256数据集分类

Caltech256数据集上进行数据分类,四种模型性能比较,后三种模型均为迁移学习,从TensorFlow Hub上下载的模型,具体请参考本次作业报告.

模型名称 模型大小 平均准确率 运行速度
VGG-19 485MB 85.814% 250s
Inception-ResNet-v2 227MB 96.97% 100s
MoblieNet 16.5MB 95.76% 23s
EfficientNet 53.1MB 96.7% 41s

训练过程准确率和loss值请见figure_logs文件夹,训练效果:

inception_resnet_v2

mobilenet_v2

efficientnet_dropout

Homework5 目标检测

提取Hog特征,并使用SVM进行分类,最后使用mAP进行评分.

特征提取及SVM模型训练:https://github.com/bikz05/object-detector/tree/master/object-detector,mAP评价目标检测器:https://github.com/Cartucho/mAP

hog特征提取

上排图像从右到左为 Gauss 金字塔从大到小生成的结果,红框为滑动窗口过程中检测到的结果,左下角为全部过程中检测结果,右下角蓝框为 nms 处理重叠后的结果.

detections

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