update doc (#608)

README.md

@@ -2,7 +2,7 @@
 
 # PaddleDetection
 
-PaddleDetection的目的是为工业界和学术界提供丰富、易用的目标检测模型。不仅性能优越、易于部署，而且能够灵活的满足算法研究的需求。
+飞桨推出的PaddleDetection是端到端目标检测开发套件，旨在帮助开发者更快更好地完成检测模型的训练、精度速度优化到部署全流程。PaddleDetection以模块化的设计实现了多种主流目标检测算法，并且提供了丰富的数据增强、网络组件、损失函数等模块，集成了模型压缩和跨平台高性能部署能力。目前基于PaddleDetection已经完成落地的项目涉及工业质检、遥感图像检测、无人巡检等多个领域。
 
 **目前检测库下模型均要求使用PaddlePaddle 1.7及以上版本或适当的develop版本。**
 

README_en.md

@@ -2,10 +2,13 @@ English | [简体中文](README.md)
 
 # PaddleDetection
 
-The goal of PaddleDetection is to provide easy access to a wide range of object
-detection models in both industry and research settings. We design
-PaddleDetection to be not only performant, production-ready but also highly
-flexible, catering to research needs.
+PaddleDetection is an end-to-end object detection development kit based on PaddlePaddle, which
+aims to help developers in the whole development of training models, optimizing performance and
+inference speed, and deploying models. PaddleDetection provides varied object detection architectures
+in modular design, and wealthy data augmentation methods, network components, loss functions, etc.
+PaddleDetection supported practical projects such as industrial quality inspection, remote sensing
+image object detection, and automatic inspection with its practical features such as model compression
+and multi-platform deployment.
 
 **Now all models in PaddleDetection require PaddlePaddle version 1.7 or higher, or suitable develop version.**