zenith lite diffuse target sg3151  (SphereOptics GmbH)

Journal: Sensors (Basel, Switzerland)

Article Title: Comparison of Reflectance Measurements Acquired with a Contact Probe and an Integration Sphere: Implications for the Spectral Properties of Vegetation at a Leaf Level

doi: 10.3390/s16111801

Figure Lengend Snippet: Examples of reflectance spectra of ( a ) coloured (green) paper and vegetation samples—( b ) tobacco; ( c ) Norway spruce. CP—Contact probe, IS—Integrating sphere. ASD, LAB—Producers of the devices.

Article Snippet: Reflectance was measured for a calibrated Zenith Lite ® Diffuse Reflectance Target (nominal reflectance of 95%, SphereOptics GmbH, Herrsching, Germany).

Techniques:

Journal: Sensors (Basel, Switzerland)

Article Title: Comparison of Reflectance Measurements Acquired with a Contact Probe and an Integration Sphere: Implications for the Spectral Properties of Vegetation at a Leaf Level

doi: 10.3390/s16111801

Figure Lengend Snippet: The measured material and methods. IS—Integration sphere, CP—Contact probe, ASD, Lab—Device manufacturers.

Article Snippet: Reflectance was measured for a calibrated Zenith Lite ® Diffuse Reflectance Target (nominal reflectance of 95%, SphereOptics GmbH, Herrsching, Germany).

Techniques: Comparison

Journal: Sensors (Basel, Switzerland)

Article Title: Comparison of Reflectance Measurements Acquired with a Contact Probe and an Integration Sphere: Implications for the Spectral Properties of Vegetation at a Leaf Level

doi: 10.3390/s16111801

Figure Lengend Snippet: Schema of the ASD integration sphere and its ports: [A] Reflectance input; [B] Reflectance comparison; [C] Reflectance sample; [D] Transmission input; [E] Specular Exclusion Light Trap; [F] Fiber Adapter Port; [G] Collimated Light Source Assembly. The picture shows the setup of sample‘s reflectance measurement. For the white reference measurement content of the ports [B] and [C] are changed as described in the .

Article Snippet: Reflectance was measured for a calibrated Zenith Lite ® Diffuse Reflectance Target (nominal reflectance of 95%, SphereOptics GmbH, Herrsching, Germany).

Techniques: Comparison, Transmission Assay

Journal: Sensors (Basel, Switzerland)

Article Title: Comparison of Reflectance Measurements Acquired with a Contact Probe and an Integration Sphere: Implications for the Spectral Properties of Vegetation at a Leaf Level

doi: 10.3390/s16111801

Figure Lengend Snippet: Evaluated spectral indices. R is reflectance on a given wavelength.

Article Snippet: Reflectance was measured for a calibrated Zenith Lite ® Diffuse Reflectance Target (nominal reflectance of 95%, SphereOptics GmbH, Herrsching, Germany).

Techniques: Transformation Assay

Journal: Sensors (Basel, Switzerland)

Article Title: Comparison of Reflectance Measurements Acquired with a Contact Probe and an Integration Sphere: Implications for the Spectral Properties of Vegetation at a Leaf Level

doi: 10.3390/s16111801

Figure Lengend Snippet: Comparison of the 95% Zenith Lite ® Spectralon calibrated reflectance values ( R ZL ) with reflectance determined by means of ASD IS and ASD CP measurements. ( a ) Original reflectance curves; ( b ) The relative differences calculated as ( R ZL − R ASD IS/CP )/ R ZL .

Article Snippet: Reflectance was measured for a calibrated Zenith Lite ® Diffuse Reflectance Target (nominal reflectance of 95%, SphereOptics GmbH, Herrsching, Germany).

Techniques: Comparison

Journal: Sensors (Basel, Switzerland)

Article Title: Comparison of Reflectance Measurements Acquired with a Contact Probe and an Integration Sphere: Implications for the Spectral Properties of Vegetation at a Leaf Level

doi: 10.3390/s16111801

Figure Lengend Snippet: Comparison of differences in coloured papers relative reflectance [%] measurements by three devices before (Mean absolute difference, Median of differences, Mean standard deviation, Root Mean Square Error—RMSE) and after linear regression (Lin. reg. mean absolute residual, Lin. reg. mean st. d.—Linear regression mean standard deviation). Measurements that were not corrected for the substitution error are in parenthesis. CP—Contact probe, IS—Integration sphere, ASD, Lab—Producers of the measurement devices.

Article Snippet: Reflectance was measured for a calibrated Zenith Lite ® Diffuse Reflectance Target (nominal reflectance of 95%, SphereOptics GmbH, Herrsching, Germany).

Techniques: Comparison, Standard Deviation

Journal: Sensors (Basel, Switzerland)

Article Title: Comparison of Reflectance Measurements Acquired with a Contact Probe and an Integration Sphere: Implications for the Spectral Properties of Vegetation at a Leaf Level

doi: 10.3390/s16111801

Figure Lengend Snippet: Spectral dependence of ( a ) the correlation coefficient and ( b ) the mean difference in reflectance obtained from the comparison of available samples measured with the ASD contact probe (CP) and ASD integration sphere (IS) for each wavelength in the spectral interval from 450 nm to 1800 nm. P—Coloured papers (9 samples), T—Tobacco leaves (72 samples), S—Norway spruce (96 samples). The dot lines around the median difference in reflectance show the interval of ± standard deviation.

Article Snippet: Reflectance was measured for a calibrated Zenith Lite ® Diffuse Reflectance Target (nominal reflectance of 95%, SphereOptics GmbH, Herrsching, Germany).

Techniques: Comparison, Standard Deviation

Journal: Sensors (Basel, Switzerland)

Article Title: Comparison of Reflectance Measurements Acquired with a Contact Probe and an Integration Sphere: Implications for the Spectral Properties of Vegetation at a Leaf Level

doi: 10.3390/s16111801

Figure Lengend Snippet: Comparison of differences in tobacco leaves (T) and Norway spruce (S) relative reflectance [%] measurements before (Mean absolute difference, Median of differences, Mean standard deviation, Root Mean Square Error - RMSE) and after linear regression (Lin. reg. mean absolute residual, Lin. reg. mean standard deviation—st. d.). Measurements that were not corrected for the substitution error are in parenthesis. CP—Contact probe, IS—Integration sphere, ASD, Lab—Producers of the measurement devices.

Article Snippet: Reflectance was measured for a calibrated Zenith Lite ® Diffuse Reflectance Target (nominal reflectance of 95%, SphereOptics GmbH, Herrsching, Germany).

Techniques: Comparison, Standard Deviation

Journal: Sensors (Basel, Switzerland)

Article Title: Comparison of Reflectance Measurements Acquired with a Contact Probe and an Integration Sphere: Implications for the Spectral Properties of Vegetation at a Leaf Level

doi: 10.3390/s16111801

Figure Lengend Snippet: Spectral dependence of correlation coefficient (its absolute value) between normalized differential index (NDI) values derived from relative reflectance measured with the ASD CP and ASD IS for ( a ) coloured papers; ( b ) tobacco leaves; ( c ) Norway spruce needles. CP—Contact probe, IS—Integration sphere, ASD, Lab—Producers of the measurement devices.

Article Snippet: Reflectance was measured for a calibrated Zenith Lite ® Diffuse Reflectance Target (nominal reflectance of 95%, SphereOptics GmbH, Herrsching, Germany).

Techniques: Derivative Assay