Effect of JPEG2000 compression on landmark identification of lateral cephalometric digital radiographs.
Introduction: As digital imaging improves and digital cephalometric radiography becomes more prevalent, the need for digital storage space and transmission speed will increase. Compression of the image files is 1 method to overcome transmission overload. However, compression could compromise image q...
| Published in: | American Journal of Orthodontics & Dentofacial Orthopedics Vol. 138; no. 4; pp. 518 - 525 |
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| Main Authors: | , , , , , , , , , |
| Format: | research Journal Article |
| Published: |
Elsevier B.V.
Oct2010
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| Online Access: | View this record in EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=105111780&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 105111780 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 08895406 1WT jtl: American Journal of Orthodontics & Dentofacial Orthopedics issn: 08895406 maglogo: N pubinfo: dt: Oct2010 vid: 138 iid: 4 pid: 467 pub: Elsevier B.V. place: New York, New York artinfo: ui: 105111780 NLM20889059 2010807356 10.1016/j.ajodo.2009.02.029 NLM20889059 105111780 ppf: 518 ppct: 7 formats: tig: atl: Effect of JPEG2000 compression on landmark identification of lateral cephalometric digital radiographs. aug: au: Abdelkarim A Nummikoski P Gakunga P Hatch JP Dove SB Abdelkarim, Ahmad Nummikoski, Pirkka Gakunga, Peter Hatch, John P Dove, S Brent affil: Assistant Professor, Department of Care Planning and Restorative Sciences, University of Mississippi College of Dentistry, Schools of Dentistry, University of Mississippi Medical Center, Jackson, Mississippi, and University of Texas Health Science Center at San Antonio, San Antonio, Tex sug: subj: Cephalometry Image Processing, Computer Assisted Standards Radiography, Dental, Digital Human Radiology Information Systems Standards Software ab: Introduction: As digital imaging improves and digital cephalometric radiography becomes more prevalent, the need for digital storage space and transmission speed will increase. Compression of the image files is 1 method to overcome transmission overload. However, compression could compromise image quality. The purpose of this study was to determine the range of compression ratios, by using the JPEG2000 standard, within which the identification of landmarks on cephalometric radiographs is not compromised.Methods: Ten lateral cephalometric digital images were used. Six raters identified 19 landmarks under controlled viewing conditions. The images included the original uncompressed TIFF image and the JPEG2000 format at 3:1, 12:1, 50:1, and 110:1 compression ratios. The images were randomized and displayed with image processing software. The x and y coordinates of each landmark were recorded.Results: All compression ratios performed equally well compared with the original images with the exception of A-point and nasion at 110:1 and gonion at 3:1 compression ratios. All landmark identifications were precise with the exception of the maxillary incisal apex and edge at the 12:1 and 50:1 compression ratios, respectively.Conclusions: JPEG2000 is a reliable file format that can be implemented in orthodontic practice. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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