FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W4385227014> ?p ?o ?g. }

• W4385227014 abstract "<p><b>We are continuously making judgements based on the appearance of objects around us. The appearance of an object depends on the way in which the object’s surface reflects, transmits, and absorbs the incident light. In recent years, there has been an increasing demand for traceable measurements of ‘appearance’ across various industries. While there has been extensive work carried out in national metrology institutes to develop traceable colour measurements, there are more and more requirements for multidimensional measurements, for example of the bidirectional reflectance and transmittance distribution functions (BRDF, BTDF). Measurements of these quantities require an instrument that allows changes to both the incident and detection angles, such as a goniospectrophotomer. Achieving traceability for measurements of the bidirectional scattering distribution function (BSDF, referring to either the BRDF or BTDF) and integrated BSDF requires an in-depth understanding of the instrument and all of the errors in the measurements.</b></p> <p>This thesis describes the measurement model developed for measurements of BSDF and integrated BSDF using the Measurement Standards Laboratory of New Zealand’s (MSL) goniospectrophotometer. This model considers all of the errors in the alignment of the instrument and the angles set by the instrument and propagates these through to the measured BSDF. A correction factor for the non-uniformity in the response of the detector is calculated and a new design for the detector is proposed to remove the need for this correction factor. The effect of the instrument signature is also considered.</p> <p>The measurement model is applied to various samples to demonstrate the insights that can be gained from a detailed model, which are then used to help lower the measurement uncertainty. The relative standard uncertainty in the BRDF of a white Spectralon sample at 550 nm is less than 0.1% for in-plane measurements, while the relative standard uncertainty in the diffuse reflectance (calculated from integrated BRDF measurements) of a white Spectralon sample at 560 nm is 0.25%.</p> <p>Finally, the model is applied to measurements of BTDF, which is integrated to calculate transmittance haze. The haze values measured using the goniospectrophotometer are compared with measurements of haze made according to the documentary standards using an integrating sphere. It is demonstrated that these two methods of measuring transmittance haze do not agree due to a conflict in the definition of transmittance haze. The BTDF measurements are used to simulate the integrating sphere haze and to calculate the sensitivity of the sphere measurements to various alignment errors.</p>" @default.
• W4385227014 created "2023-07-25" @default.
• W4385227014 creator A5010142738 @default.
• W4385227014 date "2023-07-24" @default.
• W4385227014 modified "2023-10-18" @default.
• W4385227014 title "Metrology of Scattering Distributions" @default.
• W4385227014 doi "https://doi.org/10.26686/wgtn.23735001" @default.
• W4385227014 hasPublicationYear "2023" @default.
• W4385227014 type Work @default.
• W4385227014 citedByCount "1" @default.
• W4385227014 countsByYear W43852270142023 @default.
• W4385227014 crossrefType "dissertation" @default.
• W4385227014 hasAuthorship W4385227014A5010142738 @default.
• W4385227014 hasConcept C108597893 @default.
• W4385227014 hasConcept C120456961 @default.
• W4385227014 hasConcept C120665830 @default.
• W4385227014 hasConcept C121332964 @default.
• W4385227014 hasConcept C150493377 @default.
• W4385227014 hasConcept C151596937 @default.
• W4385227014 hasConcept C191486275 @default.
• W4385227014 hasConcept C195766429 @default.
• W4385227014 hasConcept C94915269 @default.
• W4385227014 hasConceptScore W4385227014C108597893 @default.
• W4385227014 hasConceptScore W4385227014C120456961 @default.
• W4385227014 hasConceptScore W4385227014C120665830 @default.
• W4385227014 hasConceptScore W4385227014C121332964 @default.
• W4385227014 hasConceptScore W4385227014C150493377 @default.
• W4385227014 hasConceptScore W4385227014C151596937 @default.
• W4385227014 hasConceptScore W4385227014C191486275 @default.
• W4385227014 hasConceptScore W4385227014C195766429 @default.
• W4385227014 hasConceptScore W4385227014C94915269 @default.
• W4385227014 hasLocation W43852270141 @default.
• W4385227014 hasOpenAccess W4385227014 @default.
• W4385227014 hasPrimaryLocation W43852270141 @default.
• W4385227014 hasRelatedWork W1865866704 @default.
• W4385227014 hasRelatedWork W1973119135 @default.
• W4385227014 hasRelatedWork W1997391312 @default.
• W4385227014 hasRelatedWork W2040178207 @default.
• W4385227014 hasRelatedWork W2077755721 @default.
• W4385227014 hasRelatedWork W2078488576 @default.
• W4385227014 hasRelatedWork W2098169390 @default.
• W4385227014 hasRelatedWork W2356054703 @default.
• W4385227014 hasRelatedWork W2773466867 @default.
• W4385227014 hasRelatedWork W281466745 @default.
• W4385227014 isParatext "false" @default.
• W4385227014 isRetracted "false" @default.
• W4385227014 workType "dissertation" @default.