{"action":"created","issue":{"url":"https://api.github.com/repos/dicengine/dice/issues/48","repository_url":"https://api.github.com/repos/dicengine/dice","labels_url":"https://api.github.com/repos/dicengine/dice/issues/48/labels{/name}","comments_url":"https://api.github.com/repos/dicengine/dice/issues/48/comments","events_url":"https://api.github.com/repos/dicengine/dice/issues/48/events","html_url":"https://github.com/dicengine/dice/issues/48","id":268845981,"number":48,"title":"\"Large\" translations not recognized","user":{"login":"kenaycock","id":5925722,"avatar_url":"https://avatars0.githubusercontent.com/u/5925722?v=4","gravatar_id":"","url":"https://api.github.com/users/kenaycock","html_url":"https://github.com/kenaycock","followers_url":"https://api.github.com/users/kenaycock/followers","following_url":"https://api.github.com/users/kenaycock/following{/other_user}","gists_url":"https://api.github.com/users/kenaycock/gists{/gist_id}","starred_url":"https://api.github.com/users/kenaycock/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/kenaycock/subscriptions","organizations_url":"https://api.github.com/users/kenaycock/orgs","repos_url":"https://api.github.com/users/kenaycock/repos","events_url":"https://api.github.com/users/kenaycock/events{/privacy}","received_events_url":"https://api.github.com/users/kenaycock/received_events","type":"User","site_admin":false},"labels":[],"state":"closed","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":3,"created_at":"2017-10-26T17:29:24Z","updated_at":"2017-10-26T20:36:50Z","closed_at":"2017-10-26T20:36:50Z","author_association":"NONE","body":"Hi Dan and team, \r\n\r\nI am performing some more tests with DICe and have noticed that large translations (>~30px) between two image frames are not recognized.\r\n\r\nFor instance, in the following image pair,<sup>*</sup> a simple rigid-body translation is applied (32-pixel shift to the left):\r\n<img src=\"https://user-images.githubusercontent.com/5925722/32065738-95b84c12-ba4b-11e7-8764-c4be5a282ed8.png\" width=\"100\">\r\n<img src=\"https://user-images.githubusercontent.com/5925722/32065746-98685da8-ba4b-11e7-8fd6-81e6930b3a07.png\" width=\"100\">\r\n\r\nFeature matching initialization seems to work fine:\r\n<img src=\"https://user-images.githubusercontent.com/5925722/32065972-424026d0-ba4c-11e7-9c9c-43226726c6a5.png\" width=\"200\">\r\n\r\nbut the displacement field is empty:\r\n<img src=\"https://user-images.githubusercontent.com/5925722/32066661-876f560c-ba4e-11e7-856f-4dded4b8be59.png\" width=\"700\">\r\n \r\nThe behavior seems to be independent of subset and step size, initialization method, etc. But if a smaller (e.g., 20px) translation is applied instead, the displacements are extracted as expected. \r\n\r\nAny ideas as to why this is occurring? Is there a way to overcome this limitation? \r\n\r\nThanks, \r\nKen\r\n\r\n<sup>*</sup>Note: source image from Pan et al. 2010, *Opt Lasers Eng.*"},"comment":{"url":"https://api.github.com/repos/dicengine/dice/issues/comments/339793219","html_url":"https://github.com/dicengine/dice/issues/48#issuecomment-339793219","issue_url":"https://api.github.com/repos/dicengine/dice/issues/48","id":339793219,"user":{"login":"kenaycock","id":5925722,"avatar_url":"https://avatars0.githubusercontent.com/u/5925722?v=4","gravatar_id":"","url":"https://api.github.com/users/kenaycock","html_url":"https://github.com/kenaycock","followers_url":"https://api.github.com/users/kenaycock/followers","following_url":"https://api.github.com/users/kenaycock/following{/other_user}","gists_url":"https://api.github.com/users/kenaycock/gists{/gist_id}","starred_url":"https://api.github.com/users/kenaycock/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/kenaycock/subscriptions","organizations_url":"https://api.github.com/users/kenaycock/orgs","repos_url":"https://api.github.com/users/kenaycock/repos","events_url":"https://api.github.com/users/kenaycock/events{/privacy}","received_events_url":"https://api.github.com/users/kenaycock/received_events","type":"User","site_admin":false},"created_at":"2017-10-26T20:36:50Z","updated_at":"2017-10-26T20:36:50Z","author_association":"NONE","body":"Hi Dan, \r\n\r\nI'm running on a Mac and found the executable where you indicated. I updated my params.xml file (attached) and re-ran the analysis from the terminal. The results look much better. \r\n\r\nThanks for the help!\r\n\r\nKen\r\n\r\n\r\n"}}
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