Details
| Original language | English |
|---|---|
| Title of host publication | Illumination Optics V |
| Editors | Tina E. Kidger, Stuart David |
| Publisher | SPIE |
| ISBN (electronic) | 9781510619234 |
| Publication status | Published - 28 May 2018 |
| Event | Illumination Optics V 2018 - Frankfurt, Germany Duration: 14 May 2018 → 16 May 2018 |
Publication series
| Name | Proceedings of SPIE - The International Society for Optical Engineering |
|---|---|
| Volume | 10693 |
| ISSN (Print) | 0277-786X |
| ISSN (electronic) | 1996-756X |
Abstract
Projector based augmented reality serves as an alternate visual guidance tool for surgeons when performing complicated open surgeries. In projector based augmented reality, image overlay projection is a technique that allows the surgeon to view the underlying anatomical information such as tissues, tumors etc. directly on the surface of the organ or the patient. This will provide an intuitive view of the surgical navigation data by combining the surgeon's real world view with the preoperative three dimensional virtual models or instructions. Thus the strain on the surgeon to mentally align and visualize the preoperative data with intraoperative scene is greatly reduced. There are multiple stationary and handheld projectors available in the market today for this purpose. During surgery, stationary projectors mounted on a rack or under the ceiling suffer from a loss of adjustability and further cause shadowing issues when the surgeon occludes the scene. Although hand-held projectors do not have these disadvantages, they have major problems in terms of illuminance and luminous flux. The amount of light at which the hand-held projectors can project virtual additional information on to the patient is very low especially when the surgical lights are switched on. This paper therefore aims to provide an analysis of the requirements for designing such a special hand-held, augmented reality projector system that could be used during surgery, through a user study. Various optical parameters which are a key to design an augmented reality projector such as illuminance, luminance, luminous flux etc. are measured. Apart from that, other parameters such as refresh rate, image size, resolution which are also some important criteria in designing such a special projector, are discussed in this paper with respect to our application.
Keywords
- Contrast ratio, Hand-held projector, Illuminance, Luminance, Mixed-Reality, Specular reflections, Visibility contrast, Weber Contrast
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Condensed Matter Physics
- Computer Science(all)
- Computer Science Applications
- Mathematics(all)
- Applied Mathematics
- Engineering(all)
- Electrical and Electronic Engineering
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
Illumination Optics V. ed. / Tina E. Kidger; Stuart David. SPIE, 2018. 106930R (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 10693).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - User evaluation study on illumination requirements to design an augmented reality projector for open liver surgery
AU - Ilango, Shivaraman
AU - Knöchelmann, Marvin
AU - Kahrs, Lüder Alexander
AU - Wolf, Alexander
AU - Ortmaier, Tobias
AU - Lachmayer, Roland
N1 - Funding information: The authors would like to thank the workgroup CAS-hno for providing us the experimental OR at Niedersächsisches Zentrum für Biomedizintechnik, Implantatforschung und Entwicklung (NIFE), to perform our user study. The project, which this paper is a part of, is funded by the Lower Saxony Ministry for Science and Culture as part of the Tailored Light scholarship program.
PY - 2018/5/28
Y1 - 2018/5/28
N2 - Projector based augmented reality serves as an alternate visual guidance tool for surgeons when performing complicated open surgeries. In projector based augmented reality, image overlay projection is a technique that allows the surgeon to view the underlying anatomical information such as tissues, tumors etc. directly on the surface of the organ or the patient. This will provide an intuitive view of the surgical navigation data by combining the surgeon's real world view with the preoperative three dimensional virtual models or instructions. Thus the strain on the surgeon to mentally align and visualize the preoperative data with intraoperative scene is greatly reduced. There are multiple stationary and handheld projectors available in the market today for this purpose. During surgery, stationary projectors mounted on a rack or under the ceiling suffer from a loss of adjustability and further cause shadowing issues when the surgeon occludes the scene. Although hand-held projectors do not have these disadvantages, they have major problems in terms of illuminance and luminous flux. The amount of light at which the hand-held projectors can project virtual additional information on to the patient is very low especially when the surgical lights are switched on. This paper therefore aims to provide an analysis of the requirements for designing such a special hand-held, augmented reality projector system that could be used during surgery, through a user study. Various optical parameters which are a key to design an augmented reality projector such as illuminance, luminance, luminous flux etc. are measured. Apart from that, other parameters such as refresh rate, image size, resolution which are also some important criteria in designing such a special projector, are discussed in this paper with respect to our application.
AB - Projector based augmented reality serves as an alternate visual guidance tool for surgeons when performing complicated open surgeries. In projector based augmented reality, image overlay projection is a technique that allows the surgeon to view the underlying anatomical information such as tissues, tumors etc. directly on the surface of the organ or the patient. This will provide an intuitive view of the surgical navigation data by combining the surgeon's real world view with the preoperative three dimensional virtual models or instructions. Thus the strain on the surgeon to mentally align and visualize the preoperative data with intraoperative scene is greatly reduced. There are multiple stationary and handheld projectors available in the market today for this purpose. During surgery, stationary projectors mounted on a rack or under the ceiling suffer from a loss of adjustability and further cause shadowing issues when the surgeon occludes the scene. Although hand-held projectors do not have these disadvantages, they have major problems in terms of illuminance and luminous flux. The amount of light at which the hand-held projectors can project virtual additional information on to the patient is very low especially when the surgical lights are switched on. This paper therefore aims to provide an analysis of the requirements for designing such a special hand-held, augmented reality projector system that could be used during surgery, through a user study. Various optical parameters which are a key to design an augmented reality projector such as illuminance, luminance, luminous flux etc. are measured. Apart from that, other parameters such as refresh rate, image size, resolution which are also some important criteria in designing such a special projector, are discussed in this paper with respect to our application.
KW - Contrast ratio
KW - Hand-held projector
KW - Illuminance
KW - Luminance
KW - Mixed-Reality
KW - Specular reflections
KW - Visibility contrast
KW - Weber Contrast
UR - http://www.scopus.com/inward/record.url?scp=85049161851&partnerID=8YFLogxK
U2 - 10.1117/12.2309667
DO - 10.1117/12.2309667
M3 - Conference contribution
AN - SCOPUS:85049161851
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Illumination Optics V
A2 - Kidger, Tina E.
A2 - David, Stuart
PB - SPIE
T2 - Illumination Optics V 2018
Y2 - 14 May 2018 through 16 May 2018
ER -