| 1. Identity statement | ||||
| Reference Type | Conference Paper (Conference Proceedings) | |||
| Site | sibgrapi.sid.inpe.br | |||
| Holder Code | ibi 8JMKD3MGPEW34M/46T9EHH | |||
| Identifier | 8JMKD3MGPAW/3PFPNAE | |||
| Repository | sid.inpe.br/sibgrapi/2017/08.21.12.47 | |||
| Last Update | 2017:08.21.12.47.00 (UTC) administrator | |||
| Metadata Repository | sid.inpe.br/sibgrapi/2017/08.21.12.47.01 | |||
| Metadata Last Update | 2022:06.14.00.08.53 (UTC) administrator | |||
| DOI | 10.1109/SIBGRAPI.2017.9 | |||
| Citation Key | BorsatoMori:2017:BuStLi | |||
| Title | Building structured lighting applications using low-cost cameras  | |||
| Format | On-line | |||
| Year | 2017 | |||
| Access Date | 2025, July 15 | |||
| Number of Files | 1 | |||
| Size | 985 KiB | |||
| 2. Context | ||||
| Author | 1 Borsato, Frank Helbert 2 Morimoto, Carlos Hitoshi | |||
| Affiliation | 1 Universidade Tecnológica Federal do Paraná 2 Universidade de São Paulo | |||
| Editor | Torchelsen, Rafael Piccin Nascimento, Erickson Rangel do Panozzo, Daniele Liu, Zicheng Farias, Mylène Viera, Thales Sacht, Leonardo Ferreira, Nivan Comba, João Luiz Dihl Hirata, Nina Schiavon Porto, Marcelo Vital, Creto Pagot, Christian Azambuja Petronetto, Fabiano Clua, Esteban Cardeal, Flávio | |||
| e-Mail Address | frankhelbert@utfpr.edu.br | |||
| Conference Name | Conference on Graphics, Patterns and Images, 30 (SIBGRAPI) | |||
| Conference Location | Niterói, RJ, Brazil | |||
| Date | 17-20 Oct. 2017 | |||
| Publisher | IEEE Computer Society | |||
| Publisher City | Los Alamitos | |||
| Book Title | Proceedings | |||
| Tertiary Type | Full Paper | |||
| History (UTC) | 2017-08-21 12:47:01 :: frankhelbert@utfpr.edu.br -> administrator :: 2022-06-14 00:08:53 :: administrator -> :: 2017 | |||
| 3. Content and structure | ||||
| Is the master or a copy? | is the master | |||
| Content Stage | completed | |||
| Transferable | 1 | |||
| Version Type | finaldraft | |||
| Keywords | camera synchronization structured lighting differential lighting | |||
| Abstract | Structured lighting is a computer vision technique that projects illumination patterns onto the scene to facilitate feature extraction from the captured images. The use of low-cost cameras is avoided not only due to their low image quality but mostly due to the lack of a synchronization mechanism for the illuminators. In this paper we propose a method to synchronize low-cost cameras and illuminators based on the dynamic estimation of the camera sensor exposure and number of lines. At the same time, the use of structured stroboscopic lighting is used to enhance the image quality. Starting with a coarse estimation of the sensor parameters, we developed computer vision algorithms that detect image artifacts created by the structured lighting when the illuminators are not correctly synchronized with the camera frames. The detected artifacts are used to refine the estimation of the sensor parameters and to adjust the firing of the illuminators until a clear picture is obtained. Our technique requires a simple external circuit to control the firing of the illuminators, that is adjusted by software, and allows virtually any modern digital camera to be used in structured lighting applications. We demonstrate the use of this technique in a fast 187 fps robust pupil detector that can be used for gaze interaction applications. | |||
| Arrangement 1 | urlib.net > SDLA > Fonds > SIBGRAPI 2017 > Building structured lighting... | |||
| Arrangement 2 | urlib.net > SDLA > Fonds > Full Index > Building structured lighting... | |||
| doc Directory Content | access | |||
| source Directory Content | there are no files | |||
| agreement Directory Content |
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| 4. Conditions of access and use | ||||
| data URL | http://urlib.net/ibi/8JMKD3MGPAW/3PFPNAE | |||
| zipped data URL | http://urlib.net/zip/8JMKD3MGPAW/3PFPNAE | |||
| Language | en | |||
| Target File | PID4959721.pdf | |||
| User Group | frankhelbert@utfpr.edu.br | |||
| Visibility | shown | |||
| Update Permission | not transferred | |||
| 5. Allied materials | ||||
| Mirror Repository | sid.inpe.br/banon/2001/03.30.15.38.24 | |||
| Next Higher Units | 8JMKD3MGPAW/3PKCC58 8JMKD3MGPEW34M/4742MCS | |||
| Citing Item List | sid.inpe.br/sibgrapi/2017/09.12.13.04 42 sid.inpe.br/sibgrapi/2022/06.10.21.49 10 | |||
| Host Collection | sid.inpe.br/banon/2001/03.30.15.38 | |||
| 6. Notes | ||||
| Empty Fields | archivingpolicy archivist area callnumber contenttype copyholder copyright creatorhistory descriptionlevel dissemination edition electronicmailaddress group isbn issn label lineage mark nextedition notes numberofvolumes orcid organization pages parameterlist parentrepositories previousedition previouslowerunit progress project readergroup readpermission resumeid rightsholder schedulinginformation secondarydate secondarykey secondarymark secondarytype serieseditor session shorttitle sponsor subject tertiarymark type url volume | |||