基于Flutter 的视障人群辅助APP.doc

摘要

中国视障群体约有1731万人，平均不到100个人里就有一个视障人

士。随着社会的发展进步，中国对特殊群体的公共保障越来越完善。在

现实生活中，盲人最主要的需求就是出行，但是在室外的环境下盲人想

独立出行还是一件难事，很多时候都需要人陪同，公共设施还是有待提

升。深度学习的原理是利用明眼人标注的已知样本来学习一种规则进行

预测未知的样本，这种理念和需要人陪同很相似。Flutter是跨平台的

开发框架，可以利用它快速开发移动应用。本文实现的是一款结合深度

学习、跨屏台开发框架的手机应用程序，能够帮助盲人在室外环境下出

groups is becoming more and more perfect. In real life, the main need of the

blind is to travel, but in the outdoor environment, it is still difficult for blind

people to travel independently. Many times they need to be accompanied,

and public facilities still need to be improved. The principle of deep learning

is to use a known sample marked by a bright eye to learn a rule to predict an

unknown sample. This concept is very similar to the need for someone to

accompany. Flutter is a cross-platform development framework that can be

used to quickly develop mobile applications. This article implements a

mobile application that combines deep learning and a cross-screen platform

development framework to help blind people travel in outdoor environments.

第二章 研究现状与分析 ......................................2

2.1. 跨平台开发框架研究现状及分析 ...........................2

2.2. 目标检测研究现状及分析 .................................3

2.2.1. 卷积网络...........................................3

2.2.2. 目标检测...........................................4

2.3. SSD-MobileNet 介绍 ......................................5

2.4. 同类产品研究现状及分析 .................................5

第三章 实验环境搭建 ........................................6

3.1. 安装 CUDA 和 Cudnn .......................................6

3.2. 安装 Anaconda ...........................................6

4.1.2. 训练模型...........................................9

4.1.3. 模型转换..........................................12

4.2. Flutter 开发 ...........................................13

4.2.1. 语音播放数据准备..................................13

4.2.2. 应用搭建..........................................15

4.2.3. 处理音频视频异步..................................18

4.3. 测试 ..................................................19

第五章 总结与不足 .........................................20

5.1. 总结 ..................................................20

5.2. 不足 ..................................................20

2.1. 跨平台开发框架研究现状及分析