Options
Lichtfeldmessung virtueller Bilder in einer Auflösung oberhalb der Wahrnehmungsgrenze
Publikationstyp
Conference Paper
Date Issued
2021
Sprache
German
Author(s)
Herausgeber*innen
Institut
Start Page
506
End Page
515
Citation
24. Europäischer Lichtkongress (LICHT 2021)
Contribution to Conference
Publisher
Deutsche Lichttechnische Gesellschaft
Peer Reviewed
true
A “virtual image” is produced into space without a physical entity representing the image-plane. Typically wearables and head-up displays will produce virtual images, and due to the involved optical components, the shape of the images will be distorted in all three dimensions. This 3D-distortion provides information about the quality status of the device and subsequently impact the customer-experience, especially when it comes to Augmented Reality (AR) functions. To detect this, a robust measurement method is required. A light-field-measurement system has been built having the potential to reconstruct images and analyze this feature. It is able to measure and reproduce the origin of light vectors with spatial and angular information above human perceptual resolution. The extended scope of this project is the creation of a catalog on light fields from projection systems to allow virtualization of devices and to enable a retrospective comparison of devices according to the new standards in perceptual sciences.
The calculated light field vectors are generated from each pixel within the specified angular range. Thereafter, by means of image reconstruction (Inverse Radon transform) algorithm, the light field data will be used for reconstruction of the light source radiation characteristics and geometry. Contrast analysis of the reconstructed data allows the identification of the image plane. A modified Radon transformation enables the reconstruction of vector-fields giving a detailed insight into the scattering function of the plane. The aim of the project is to create a full digital-twin of the device useful in design simulations as if it is seen from any observation point within the specified angular range.
The calculated light field vectors are generated from each pixel within the specified angular range. Thereafter, by means of image reconstruction (Inverse Radon transform) algorithm, the light field data will be used for reconstruction of the light source radiation characteristics and geometry. Contrast analysis of the reconstructed data allows the identification of the image plane. A modified Radon transformation enables the reconstruction of vector-fields giving a detailed insight into the scattering function of the plane. The aim of the project is to create a full digital-twin of the device useful in design simulations as if it is seen from any observation point within the specified angular range.
Subjects
Lightfield measurement, goniometer, head-up displays, virtual images
DDC Class
600: Technik
620: Ingenieurwissenschaften
690: Hausbau, Bauhandwerk
720: Architektur