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ISO 12233:2014 Edge SFR(eSFR)Test chart
The
ISO 12233:2014 Edge SFR(eSFR)Test chart/E-SFR charts
are implementations of the Low Contrast Edge SFR
(E-SFR) test chart illustrated in Section 6.1 and
Annex Cof the ISO Standard Document. The charts come
in three versions:
Standard: basic, no extra measurement features;
Enhanced: extra squares, wedges, and color patterns when printed with
technologies that allow color
Extended: similar to Enhanced, but with a 16:9 aspect ratio, suitable
for HDTV and cinema
Chart Size |
Standard |
Enhanced |
Extended |
1x |
200 mm × 305 mm
7.875" × 12" |
200 mm × 305 mm
7.875" × 12" |
200 mm × 365 mm
7.875" × 14.5" |
2x |
400 mm × 610 mm
15.75" × 24" |
400 mm × 610 mm
15.75" × 24" |
400 mm × 730 mm
15.75" × 29" |
4x |
800 mm × 1220 mm
31.5" × 48" |
800 mm × 1220 mm
31.5" × 48" |
800 mm × 1460 mm
31.5" × 58" |
Standard
This
chart, which has a 3:2 aspect ratio, is a "no-frills"
implementation of the standard. For most work we recommend the Enhanced
or Extended charts, which have additional edges for measuring
performance near the image boundaries, as well as hyperbolic wedges and
color patches (where the technology allows). These chartsmaintain full
compliance with the standard.
The Standard ISO 12233:2014 E-SFR chart closely resembles the
Low contrast E-SFR test chart illustrated in section 6.1 and Annex C of
the ISO standard document, with a few differences, all of which
are fully compliant with the ISO standard.
- A 20 patch OECF grayscale pattern* is used instead of the 16 patch version.
- The
Focus Patterns in the centers of the squares are rectangular (to
increase the MTF measurement area) and are designed to reduce
interference with automatic edge detection.
- There
are four registration marks instead of three to facilitate automated
region detection. (Four features are required for a projective
transform.)
- An additional mark above the lower-left registration mark is used for detecting chart orientation.
Enhanced
The
Enhanced ISO 12233:2014 E-SFR chart has all the features of
the Standard chart, keeping the 3:2 aspect ratio, with the
addition of six added slanted squaresfor measuring performance near the
image boundaries and hyperbolic wedges for visual analysis or analysis
with the Imatest Wedge module. It also has 16 color patches when
produced with technologies that allow color. Since these additions are
in regions of the chart not covered by the standard, compliance with
the standard is unaffected.
The
differences between the Imatest charts and the chart illustrated in the
standard are listed below. Even with these differences the Imatest
chart is in full compliance with the standard.
- A 20 patch OECF grayscale pattern* is used as opposed to the 16 patch version.
- The
Focus Patterns in the centers of the squares are rectangular (to
increase the MTF measurement area) and are designed to reduce
interference with automatic edge detection.
- There
are four registration marks instead of three to facilitate automated
region detection. (Four features are required for a projective
transform.)
- An additional mark above the lower-left registration mark is used for detecting chart orientation.
The differences between the Enhanced and Standard Versions are as follows:
- Six extra slanted squares are added for measuring performance near the image boundaries.
- Several
hyperbolic wedges with spatial frequencies, similar to the CIPA chart
referenced in the ISO standard, for visual analysis or use with the
Imatest Wedge module.
- 16
color patches when produced with technologies that allow color (inkjet
or color LVT), with colors similar to the industry-standard
24-color test chart.
This chart will work with the fully-automated eSFR ISO module.
Extanded
The Extended ISO
12233:2014 E-SFR chart has all the features of
the Enhanced chart (six extra squares, wedges, and 16 color
patches where possible), but has a16:9 aspect ratio, which makes it
suitable for HDTV and cinema measurements (and it also works well with
3:2 aspect ratio DSLRs). It is fully compliant with the standard.
This chart will work with the fully-automated eSFR ISO module.
Color Rendition Chart (X-Rite ColorChecker)
Scan Reference Chart
Universal
Test Target
Critical
Flesh Tones Test Chart
Bar Test Chart(IEC 61146)
White Balacing Test Chart
ISO 12233:2014 Edge SFR(eSFR)Test chart
Color Spilled Coins (Dead Leaves) Test Chart
Gray Scale Test Chart(11 steps)
Streaking Measurement Test Chart
Color Bar Test Chart
Gray scale chart
Grid Test Chart
ISO 12233 Enhanced digital camera resolution chart
Standard SFRplus Chart
SFRplus Chart on Photographic Paper QI-SFR10-P-RM
ITE Grayscale Chart II(Gamma = 1)
Black & White Spilled Coins (Dead Leaves) Test Chart
OECF Test Chart (ISO 14524)
ISO 12233: 2014 (eSFR)Photographic chart
ISO-14524 digital camera contrast chart
ISO-15739 digital camera noise test chart
ISO 12233 Digital still-camera resolution chart
Automotive Test Chart
SFRplus Chart: Inkjet on Paper - 4:1 Contrast Ratio
SFRplus Chart: Inkjet on Paper - 10:1 & 2:1 Contrast Ratio
Distortion Grid Test Chart
HDTV Gray Scale Test Chart
ITE Grayscale Chart I(Gamma = 0.45)
EIA RESOLUTION CHART 1956
Sector Star Test Chart (72 cycles)
Sector Star Test Chart (36 cycles)
HDTV Universal Test Chart
DTV Color Rendition Test Chart
36-Patch Dynamic Range Test Chart
Spectrometer
OHSP-350
OHSP350A Light
Spectrometer
HPL-200
Flicker illuminometer
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