{"action":"opened","issue":{"url":"https://api.github.com/repos/tensorflow/models/issues/2926","repository_url":"https://api.github.com/repos/tensorflow/models","labels_url":"https://api.github.com/repos/tensorflow/models/issues/2926/labels{/name}","comments_url":"https://api.github.com/repos/tensorflow/models/issues/2926/comments","events_url":"https://api.github.com/repos/tensorflow/models/issues/2926/events","html_url":"https://github.com/tensorflow/models/issues/2926","id":277910377,"number":2926,"title":"The faster rcnn module does not support batch_size > 1 for each clone","user":{"login":"ybsave","id":26417094,"avatar_url":"https://avatars0.githubusercontent.com/u/26417094?v=4","gravatar_id":"","url":"https://api.github.com/users/ybsave","html_url":"https://github.com/ybsave","followers_url":"https://api.github.com/users/ybsave/followers","following_url":"https://api.github.com/users/ybsave/following{/other_user}","gists_url":"https://api.github.com/users/ybsave/gists{/gist_id}","starred_url":"https://api.github.com/users/ybsave/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/ybsave/subscriptions","organizations_url":"https://api.github.com/users/ybsave/orgs","repos_url":"https://api.github.com/users/ybsave/repos","events_url":"https://api.github.com/users/ybsave/events{/privacy}","received_events_url":"https://api.github.com/users/ybsave/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2017-11-29T21:19:09Z","updated_at":"2017-11-29T21:19:09Z","closed_at":null,"author_association":"NONE","body":"https://github.com/tensorflow/models/blob/b63a73df70656ecfcd2d50bfc98b09b3ce06f635/research/object_detection/trainer.py#L155\r\n\r\nThe above line has a concat operation which only works for single image or images with the same width/height ratio, i.e., the same size after resize. \r\n\r\nThis seems to be a bug; because in \r\nhttps://github.com/tensorflow/models/blob/01aa7a4a6190bf021f448dee26fc649f4b47753e/research/object_detection/meta_architectures/faster_rcnn_meta_arch.py#L101, the comments show \"When training with a relative large batch size (e.g. 8), it could be desirable to enable batch norm update.\" This indicates the authors plan to support more batch sizes."}}
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