Preface

I participated in Ali Tianchi competition before , It's been a long time , There's been no time to sort it out , Now approaching graduation , During the external review of the thesis , Hurry up and tidy up ,5 The school will let us go at the end of the month , To cry ！！！ The victims of the Universiade ！！！

One 、 Street view character code recognition

Let's talk about the basic situation of the game first , No serious competition , therefore , You'll see , The following provides the game connection and my code connection , Interested partners can download and play .

Game connection ：https://tianchi.aliyun.com/competition/entrance/531795/introduction
Code connection ：

1. The goal is

First, let's briefly introduce the competition , It's actually target detection , Is to identify the sect number of the real scene , The task is to recognize the numbers of the following pictures from left to right , Some people have thought that this is a 10 Target detection task of class

2. Data sets

The data comes from the house number of the real scene . The training set data includes 3W A picture , The validation set data includes 1W A picture , Each photo includes color image and corresponding coding category and specific location ; To ensure the fairness of the game , Test set A Include 4W A picture , Test set B Include 4W A picture .
The dataset image looks like this , The format is .png

Dataset tags look like this , The format is json

It should be noted that json The format gives the following information , If you need to use yolov5 Words , To convert to a center point + Length width format top Top left coordinates Y height character height left Top left coordinates X width Character width label Character encoding

3. indicators

The results are compared with the actual picture coding , Taking the overall recognition accuracy of coding as the evaluation index , The bigger the result, the better , The specific calculation formula is as follows ：

$$Score=EdcodeknowledgeotherjustindeedOfCountThe\; amount/measuringtrychartsliceCountThe\; amount$$

summary

That's what we're going to talk about today , Later, I'll talk about a detailed use yolov5 Participate in the competition blog .