{"action":"created","issue":{"url":"https://api.github.com/repos/ShaoqingRen/faster_rcnn/issues/36","repository_url":"https://api.github.com/repos/ShaoqingRen/faster_rcnn","labels_url":"https://api.github.com/repos/ShaoqingRen/faster_rcnn/issues/36/labels{/name}","comments_url":"https://api.github.com/repos/ShaoqingRen/faster_rcnn/issues/36/comments","events_url":"https://api.github.com/repos/ShaoqingRen/faster_rcnn/issues/36/events","html_url":"https://github.com/ShaoqingRen/faster_rcnn/issues/36","id":115782990,"number":36,"title":"Training on a separate dataset from scratch","user":{"login":"duygusar","id":4791974,"avatar_url":"https://avatars.githubusercontent.com/u/4791974?v=3","gravatar_id":"","url":"https://api.github.com/users/duygusar","html_url":"https://github.com/duygusar","followers_url":"https://api.github.com/users/duygusar/followers","following_url":"https://api.github.com/users/duygusar/following{/other_user}","gists_url":"https://api.github.com/users/duygusar/gists{/gist_id}","starred_url":"https://api.github.com/users/duygusar/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/duygusar/subscriptions","organizations_url":"https://api.github.com/users/duygusar/orgs","repos_url":"https://api.github.com/users/duygusar/repos","events_url":"https://api.github.com/users/duygusar/events{/privacy}","received_events_url":"https://api.github.com/users/duygusar/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":3,"created_at":"2015-11-09T03:06:06Z","updated_at":"2016-09-26T01:23:25Z","closed_at":null,"body":"hello ! Thank you for making the code available, much appreciated. I was formerly working with caffe and selective search, instead of using rcnn I had written my own scripts, I have bumped into every problem with computational cost of localization so I want to experiment right away \r\n\r\nAnyhow, I  went over the code and I thought a mini guide for training a whole new dataset from scratch would be much appreciated as I have a few questions in my head. Is it possible to start training without finetuning from a pretrained model? (I do have a one class (pos or neg/object or b.g. (not object)) problem which is not an object in any of the classes of VOC or imagenet, so I believe I need a separate model for objectness trained on my dataset) Do I train a network originally defined as in caffe paper using annotation boxes as positives? Do I need to compute image mean myself? If so, is the image mean of the whole frame or the annotation box? I am assuming it should be in caffe channels order? Since I keep getting the libprotobuf error it is making it difficult to trace in debug mode ( I can't run any function twice on matlab) \r\n\r\nI would really appreciate the tips to train on a whole new dataset (which I can arrange in voc format ) if anyone has already attempted to do so.Thanks !"},"comment":{"url":"https://api.github.com/repos/ShaoqingRen/faster_rcnn/issues/comments/249460509","html_url":"https://github.com/ShaoqingRen/faster_rcnn/issues/36#issuecomment-249460509","issue_url":"https://api.github.com/repos/ShaoqingRen/faster_rcnn/issues/36","id":249460509,"user":{"login":"Astrosun","id":13742385,"avatar_url":"https://avatars.githubusercontent.com/u/13742385?v=3","gravatar_id":"","url":"https://api.github.com/users/Astrosun","html_url":"https://github.com/Astrosun","followers_url":"https://api.github.com/users/Astrosun/followers","following_url":"https://api.github.com/users/Astrosun/following{/other_user}","gists_url":"https://api.github.com/users/Astrosun/gists{/gist_id}","starred_url":"https://api.github.com/users/Astrosun/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/Astrosun/subscriptions","organizations_url":"https://api.github.com/users/Astrosun/orgs","repos_url":"https://api.github.com/users/Astrosun/repos","events_url":"https://api.github.com/users/Astrosun/events{/privacy}","received_events_url":"https://api.github.com/users/Astrosun/received_events","type":"User","site_admin":false},"created_at":"2016-09-26T01:23:25Z","updated_at":"2016-09-26T01:23:25Z","body":"@duygusar \r\nMay I know how you deal with the image mean part? So for my own data set, do we need to compute the image means of our own images? Do we still need to normalize the input?\r\n\r\nThanks a lot!"}}
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