main page - login as guest or anonymous

from the main page,
http://labelme.csail.mit.edu/Release3.0/

I don't see a way to just start using it, without having to faff around with registration (email, passwords, usernames).

it would be better if you can just dive in. You could still record the IP of contributions, tag them as 'anonymous'/'guest' or whatever, and retroactively validate them (if clients want to filter contributions from trusted sources). Given 'anonymous contributions' a 10% weighting or something, if you're worried about a higher probability of damage

从 LabelMe 主页 http://labelme.csail.mit.edu/Release3.0/ 开始，检查当前的注册和登录流程。完成的标准是访客无需注册即可开始进行标注，并且贡献会被标识为匿名或访客，以便后续验证或筛选。

由索引模型根据 Issue 内容生成。