SpectraSearch Spring Semester Update

(post-conference)

Requirements

SPD FUNCTIONS

NAME	NAME2	COMMENTS	~
CCT	Correlated Color Temperature	Legacy	F
CRI	Color Rendering Index	General + Extended (R1-R15)(Average Color Fidelity, Old)Legacy	F
IES TM-30-2015 Fidelity Index (Rf)	CRI, 99 CES	(Average Color Fidelity, New)	1
Gamut Index (Rg)	TM-30	Compares the area enclosed by the average chromaticity coordinates in each of 16 hue bins to characterize the average saturation level of the test source compared to the reference illuminant. A neutral score is 100, with values greater than 100 indicating an increase in saturation and values less than 100 indicating a decrease in saturation. The range in values grows as fidelity decreases.	1
Hue Fidelity IndicesRf,hj (j = 1 to 16)	TM-30	Provides a numerical characterization of color fidelity in each of 16 hue bins (j), which can be used to evaluate how similarly the test source renders reds, yellows, greens, blues, or in-between hues compared to the reference. Values range from 0 to 100. Specificvalues may be used to supplement average values if one hue type is of particular concern. Specifying limits for all values is also possible. These scores are analogous to the special indices of the CRI system (e.g., R9), but are more robust because they combineseveral samples with different spectral features.	1
Chroma Change by HueIndicesRcs,hj (j = 1 to 16)	™-30	Provides numerical values for relative chroma change in each of 16 hue bins (j), which can be used to evaluate saturation (positive values) or desaturation (negative values) of reds, yellows, greens,blues, and in-between hues compared to the reference. Supplementary criteria could be set for all values, or just specific values,such as red (bin 1).	3
Skin Fidelity IndexRf,skin	™-30	Characterizes the similarity of skin tones (CES15 and CES18) as rendered by the test source compared to the reference source.Values range from 0 to 100. Rf,skin can be used to supplement other values when skin is an important consideration.	3
Sample Fidelity IndicesRf,CESi(i = 1 to 99)	™-30	Characterizes the similarity of each CES (i) as rendered by the test source compared to the reference source. Values range from 0 to 100. Individual values may have little predictive power for other objects, but examining the scores in a combined chart can indicate the source's object-to-object consistency.	3
Chromaticity Coordinates		CIE X,Y,X_Legacy_	2
Melanopic/Photopic ratio	M/P	Melanopic response in humans for alertness/sleepSeveral methods for calculating	2
Scotopic/Photopicratio	S/P	Low-light human responseHelps determine light to energy ratio_energy_	2
Luminaire Efficacy Rating	LER	how much light does it put out based on how much energy it consumes//pres joy per joule_energy_	3
Lumens per Watt	LPW	energy	3
CIE S 026 action spectra	α-opic	five human α-opic photoreceptor classes (S-cones, M-cones, L-cones, rods and ipRGCs)Also see M/P	1

GRAPHICS

Name	Place	Comments
SPD Graph	fund.	SpectralData + Extended tables
Color Vector Graphic	TM-30	Provides a visual representation of hue and saturation changes based on the average rendering in each hue bin, relative to the reference. The graphic provides a quick understanding of how different hues are rendered in different ways.
Color Saturation Graphic	TM-30	Provides a simplified visual representation of only saturation changes based on the average performance in each hue bin.
...	...	...

OTHER

• Admin page
• Upload data formats
• Download data formats

Notes

NOTED CHANGES

• Revert to Sprint 2 Database schema (i.e. separate Spectral Data table) OR attempt unstructured (Final pres.)
• SpectralDataExtendedInfra (rec) and SpectralDataExtendedUltra (TBD)
• Option: Upload to Calculate, but not to Integrate
• SpectraSearch not Spectra Search
• Check Energy SPD functions for matching req in database schema (i.e. Watts)

Upcoming TBD

• Ed. page (i.e. how to read)
• DOE Meeting Schedule
• lux contact (Wyatt/Bryan)

Planning

CALENDAR

Scrum Date	Agenda	Comments
2/21/20	Planning, Begin Sprint 1
2/28/20	Scrum
3/6/20	Begin Sprint 2
March TBD	DOE Meeting
3/13/20		Spring Break
3/20/20	Begin Sprint 3
3/23/20	Midterm Presentation (Owrang)
3/27/20	Scrum
4/3/20	Scrum
April TBD	DOE Meeting
4/10/20	Begin Sprint 4
4/17/20	Begin Sprint 5
4/24/20	Final Project/Report Due (Owrang)
April TBD	Last DOE Meeting (Pre-Handoff)
5/04/20	Final Presentation (Owrang)
May TBD	Handoff to DOE / Final Meeting	End of Semester

SPRINTS (Proposed)

Sprint 1:

• Database
  • Confirm Database SpectralData changes (structured vs unstructured, extended)
• Front-end
  • SPD Graphic Integration Multi-Attempt
    • ■■Rebecca (?)
    • ■■Elisabetta (?)
    • ■■Lily (P5)
• Backend
  • Check Energy SPD Functions reqs to database schema
  • Gather SPD Functions pure formulas
    • ■■~Wave1 and ~Wave2
    • ■■Lily / Matt
• DOE Feb. Meeting
• F.lux

Sprint 2:

• Front-end
  • SPD Graphic Integration Leftovers
  • Begin Admin Page and associated
• Backend
  • Implement ~Wave1 and ~Wave2 SPD Functions
  • Gather SPD Functions pure formulas
    • ■■~Wave3, Sprint 1 leftovers (I imagine M/P)
• DOE Meeting (User Testing @frontend?)

Sprint 3:

• Backend
  • Implement ~Wave3 and leftovers
• Frontend
  • Admin Page and associated finish
  • GRAPHICS table
• Mixed
  • Upload/Download
• Database
  • Extend example data (DOE, Lily)

Sprint 4:

• Testing
  • SPD Functions with extended example data
  • Upload/Download
  • User interface (in-house)
• Ed. Page
• DOE Meeting (User testing)

Sprint 5:

• Implementations based on Sprint 4 user testing
• Front-end polish
• Backend leftovers