IEC 62629-12-2:2019

IEC 62629-12-2 ®
Edition 1.0 2019-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
3D display devices –
Part 12-2: Measuring methods for stereoscopic displays using glasses –
Motion blur
Dispositifs d'affichage 3D –
Partie 12-2: Méthodes de mesure pour les écrans stéréoscopiques utilisant
des lunettes – Flou de mouvement

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IEC 62629-12-2 ®
Edition 1.0 2019-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
3D display devices –
Part 12-2: Measuring methods for stereoscopic displays using glasses –

Motion blur
Dispositifs d'affichage 3D –
Partie 12-2: Méthodes de mesure pour les écrans stéréoscopiques utilisant

des lunettes – Flou de mouvement

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 31.120; 31.260 ISBN 978-2-8322-6687-8

– 2 – IEC 62629-12-2:2019  IEC 2019
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms, definitions and abbreviated terms . 6
3.1 Terms and definitions . 6
3.2 Abbreviated terms . 7
4 Standard measuring conditions . 7
4.1 Temperature, humidity and pressure conditions . 7
4.2 Illumination conditions . 7
5 Standard motion-blur measurement methods . 8
5.1 General . 8
5.2 Direct measurement method . 8
5.2.1 Standard measuring process . 8
5.2.2 Analysis method . 11
5.3 Indirect measurement method . 12
5.3.1 General . 12
5.3.2 Measurement system . 12
5.3.3 Measurement process . 13
5.3.4 Data analysis . 14
6 Test report . 15
6.1 General . 15
6.2 Items to be reported . 15
6.2.1 Environmental conditions . 15
6.2.2 Display parameters . 15
6.2.3 Measuring method and conditions. 16
6.2.4 Analysis method . 16
Annex A (informative) Effect of binocular saccade on 3D motion blur . 18
Annex B (informative) Motion contrast degradation . 19
Annex C (informative) Activation of external 3D signal emitter . 21
Bibliography . 22

Figure 1 – Example of edge blur test pattern of top/bottom 3D format . 8
Figure 2 – Example of pivoting pursuit camera system . 9
Figure 3 – Example of linear pursuit camera system . 9
Figure 4 – Example of luminance cross-section profile of a blurred edge with BET. 11
Figure 5 – Example of luminance cross-section profile of a blurred edge with EBET . 12
Figure 6 – Set-up to measure the temporal step response . 13
Figure 7 – Example of temporal response of left or right view . 14
Figure 8 – Example of motion picture response curves . 15
Figure 9 – Example of visually reporting BET analysis data . 16
Figure A.1 – Example of binocular saccade to follow the motion of 3D image . 18
Figure B.1 – Example of motion contrast degradation test pattern . 19
Figure B.2 – Example of motion contrast degradation due to line spreading. . 20

Table 1 – Step response data for different luminance transitions . 10
Table 2 – Example of measuring conditions . 10
Table 3 – BET analysis data in 2D mode . 17
Table 4 – BET analysis data in 3D mode . 17

– 4 – IEC 62629-12-2:2019  IEC 2019
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
3D DISPLAY DEVICES –
Part 12-2: Measuring methods for stereoscopic displays using
glasses – Motion blur
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 62629-12-2 has been prepared by IEC technical committee 110:
Electronic displays.
The text of this International Standard is based on the following documents:
CDV Report on voting
110/978/CDV 110/1049/RVC
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
A list of all parts in the IEC 62629 series, published under the general title 3D display devices,
can be found on the IEC website.

This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
– 6 – IEC 62629-12-2:2019  IEC 2019
3D DISPLAY DEVICES –
Part 12-2: Measuring methods for stereoscopic displays using
glasses – Motion blur
1 Scope
This part of IEC 62629 specifies the measuring methods of motion artifacts for stereoscopic
displays using glasses. This document is applicable to stereoscopic displays using glasses,
which consist of transmissive type active matrix liquid crystal display modules (without a post
image processing).
NOTE Motion blur measurement methods and analysis methods introduced in this document are not universal
tools for all different LCD motion enhancement technologies due to their complexity, and displays with some motion
quality enhancement technologies cannot be measured or analysed by the methods introduced in this document. If
this is the case, users are made aware of this.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their
content constitutes requirements of this document. For dated references, only the edition
cited applies. For undated references, the latest edition of the referenced document (including
any amendments) applies.
IEC 61747-30-1, Liquid crystal display devices – Part 30-1: Measuring methods for liquid
crystal display modules – Transmissive type
3 Terms, definitions and abbreviated terms
For the purposes of this document, the following terms, definitions and abbreviated terms
apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1 Terms and definitions
3.1.1
motion picture response curve
curve, representing the convolution of the temporal step response with a moving window
function of 1-frame wide
Note 1 to entry: This shows how the luminance is integrated over time during smooth pursuit eye tracking and
combines the effects of the display response time and the hold-type characteristics of the device under test.
[SOURCE: IEC 61747-6-3:2011, 3.1, modified – the second part of the definition has been
made into a note.]
3.1.2
motion induced edge profile
luminance profile of an intrinsically sharp moving luminance transition when this transition is
followed with smooth pursuit eye tracking along its motion trajectory

Note 1 to entry: The profile can be calculated from the motion picture response curve for any given motion speed.
[SOURCE: IEC 61747-6-3:2011, 3.2]
3.1.3
edge blur
blur that becomes visible on an intrinsically sharp transition between two adjacent areas, with
a different luminance level, when the transition smoothly moves across the display as a
function of time
Note 1 to entry: Preconditions for this type of edge blur are smooth pursuit eye tracking of the object, and no
obvious flicker, indicating that luminance integration with a frame period is allowed. This blur phenomenon is
mainly caused by a slow response time of the display device in combination with the hold-type characteristics.
[SOURCE: IEC 61747-6-3:2011, 3.3]
3.2 Abbreviated terms
BET blurred edge time
CCD charge-coupled device
CIE Commission Internationale de l’Eclairage (International Commission on
Illumination)
CMOS complimentary metal-oxide semiconductor
DUT display under test
DVI digital visual interface
EBET extended blurred edge time
IEC International Electrotechnical Commission
ISO International Organization for Standardization
LCD liquid crystal display
LMD light measuring device
LPF low-pass filtering
LVDS low-voltage differential signaling
MCD motion contrast degradation
MPRC motion picture response curve
4 Standard measuring conditions
4.1 Temperature, humidity and pressure conditions
The standard environmental conditions for the motion artifact measurement are as follows:
– temperature:  (25 ± 3) °C
– relative humidity: 25 % to 85 %
– air pressure:  86 kPa to 106 kPa
4.2 Illumination conditions
The illuminance at the measuring spot of the DUT shall be below 1 lx (standard dark room
conditions as defined in IEC 61747-30-1).

– 8 – IEC 62629-12-2:2019  IEC 2019
5 Standard motion-blur measurement methods
5.1 General
Motion induced object blur is the result of a slow response of the liquid crystal cells and a
stationary representation of the temporal image (related to the hold time of the display), in
combination with smooth pursuit eye-tracking of an object over the display surface. When an
object moves across the display and the eye is tracking this object, a spatiotemporal
integration of the object luminance is taking place at the human retina. There are several
ways to measure and characterize this spatiotemporal integration, via a direct measurement
or via an indirect measurement technique. For direct measurements a pursuit camera system
can be used, and the indirect measurement is based on measuring the temporal response
curves, and from those curves the motion induced object blur that will occur on the retina can
be calculated. Both direct and indirect measurements will be described in this document. In
addition to the characteristics of motion blur of two-dimensional (2D) LCD modules, there
exist influences from the 3D operation of the display device and the 3D glasses, which result
in a change in the perceived hold time. The direction of image motion is another factor to be
considered regarding the fact that the 3D image can be perceived to move in a 3D space –
not in a 2D plane. See Annex A for an example.
5.2 Direct measurement method
5.2.1 Standard measuring process
5.2.1.1 Test patterns
The test pattern shall be displayed to fill the entire screen to measure the motion blur of
stereoscopic 3D display modules. In order to preserve the horizontal resolution in the 3D
driving mode, the top/bottom or frame sequential test pattern shall be used. In order to
prevent influences from the 3D crosstalk between the left-eye and the right-eye patterns, the
test pattern shall be located in the left-eye pattern while the right-eye pattern shall be a black
screen (see Figure 1). The details of the test pattern(s) used shall be reported. When using a
pursuit system, the width of the test pattern should be sufficiently wide, for example 5 times
the advancement (step-width) per frame, to capture the total temporal response of the display.
It is recommended that a minimum of seven equally divided gray levels, including black and
white, be used for the gray level of each part of a test pattern in Figure 1. The lightness
function, specified in CIE 1976 (L*u*v*) and CIE 1976 (L*a*b*) colour spaces, can be used to
space the intermediate gray shades equally on the lightness scale. One of the gray level data
that are available at the LCD modules input, for example 0 to 255 for an 8-bit LCD module,
can also be used as this gray level. See Annex B for the line spreading method.

Figure 1 – Example of edge blur test pattern of top/bottom 3D format

5.2.1.2 Pursuit detection system
Measurement of the edge blur of the LCD module should be done by using a CCD or CMOS
camera with the pursuit measurement system shown in Figure 2 and Figure 3. Relevant
literature on these systems can be found in the Bibliography, references [1] to [6] .

Figure 2 – Example of pivoting pursuit camera system

Figure 3 – Example of linear pursuit camera system
The following elements are recommended when implementing the pursuit measuring system:
___________
Numbers in square brackets refer to the Bibliography.

– 10 – IEC 62629-12-2:2019  IEC 2019
a) LMD: CCD or CMOS type surface measurement devices, with preferably an integrated CIE
1931 photopic luminous sensitivity function (measuring luminance).
b) Scroll speed: the scroll speed of the test pattern and the pursuing speed of the LMD shall
be synchronized to prevent integration errors.
c) Pursuing system: either the pivoting or linear pursuit system shown in Figure 2 and Figure
3, respectively. The angular rotation shall be limited to avoid viewing-angle and depth of
focus related dependencies (less than ± 5˚).
d) Location of the 3D glasses: if the LMD uses a scanning mirror and a fixed camera, the 3D
glasses shall be located between the scanning mirror and the lens.
5.2.1.3 Specified conditions
The specified conditions shall be as follows, and shall be reported:
a) Any deviations from the standard measurement conditions.
b) The signal level (the start level and the end level) for the test pattern is summarized in
Table 1.
Table 1 – Step response data for different luminance transitions
Data per colour End level
(e.g. R,G,B,W)
L L L . . L
1 2 3 N
L L (t) L (t)  L (t)
1 1-2 1-3 1-N
L L (t) L (t)  L (t)
2 2-1 2-3 2-N
L L (t) L (t)  L (t)
3 3-1 3-2 3-N
..
..
L L (t) L (t) L (t)
N N-1 N-2 N-3
NOTE The gray levels are typically used.

c) Standard measuring conditions
1) Scroll speed (pixel/frame): 4, 8, 12.
2) Shutter speed of camera (in seconds): multiples of a single frame time, which means a
period of 1/R (R : video refresh rate) for a pair of left-eye patterns and right-eye
vf vf
patterns which are displayed.
d) Requirements for measuring set-up
1) Measuring distance
It is recommended to set a pursuing angle no larger than ±5° (as described in 5.2.1.2
c)) during the shutter speed. The measuring distance shall be set to satisfy the above
criterion of pursuing angle. Table 2 shows an example.
Table 2 – Example of measuring conditions
Size of display screen (diagonal, inch) 24
Pixel size (mm) 0,276
Scroll speed (pixel/frame) 8
Shutter speed of camera (frame) 4
Measuring distance (mm) 300
Pursuing angle (degrees) 1,7
Start level
2) Measuring positions at screen
It is recommended to set the measuring positions at the centre of the screen. In
addition, the measuring positions can also be horizontally centred at the top and
bottom of the screen, provided that is included in the report.
5.2.1.4 Requirements for the measuring system
The measuring system shall have the following conditions:
a) The spectral sensitivity of the camera shall be adjusted to be fitted with a photopic vision
function by using an adjusting element such as an optical filter.
b) The camera shall be able to focus at the display screen.
c) The measuring device shall include an iris to adjust the sensitivity.
d) The measuring device shall be able to pursue the scrolled pattern smoothly (consistently
uniform pursuing velocity).
e) The measuring system shall be able to provide a cross-section of the luminance profile
from the captured images of the scrolled pattern using the pursuing operation.
f) The measuring system shall provide consistent results with the measuring conditions with
various scroll speeds of the pattern and various shutter speeds of the camera (various
multiples of 1/R ).
vf
5.2.2 Analysis method
5.2.2.1 Blurred edge time
The time between the transitions from 10 % to 90 % in the luminance transition curve (see
Figure 4) is used to represent the blurred edge time. Other ranges, such as 40 % to 60 %, can
be used, but they shall be reported.
NOTE The relation between the motion blur and the shape of the luminance transition curve (see Figure 4) is still
not clear, because the actual curve shape is not so simple (i.e., overshoot, …).

Figure 4 – Example of luminance cross-section profile of a blurred edge with BET

– 12 – IEC 62629-12-2:2019  IEC 2019
5.2.2.2 Extended blurred edge time
The extended blurred edge time is defined as 80 % of BET, which linearly extends BET to
the 0 % to 100 % levels (see Figure 5).

Figure 5 – Example of luminance cross-section profile of a blurred edge with EBET
NOTE The relation that EBET equals 80 % of BET can be used only if a BET from 10 % to 90 % in the luminance
transition curve has been used.
5.3 Indirect measurement method
5.3.1 General
The indirect measurement method adopted is the temporal step response measurement
method, which is based on the literature, indicated in the Bibliography, i.e., references [10] to
[16]. If the display does not have any spatial imaging processing, such as sharpening (spatial
high-pass filter), the indirect method can be used.
5.3.2 Measurement system
A schematic representation of the measurement set-up to measure the temporal step
response is shown in Figure 6.

Figure 6 – Set-up to measure the temporal step response
The measurement set-up, presented in Figure 6, comprises the following components:
– The DUT (1), which is the 3D display to be measured.
– A pattern generator (2), which generates the test patterns in the native display resolution
and applicable refresh rates. The pattern generator, preferably, has a control terminal or
interface, which enables selection of the pattern and start-stop of the measurement
procedure. The output of the pattern generator may consist of one or more LVDS, DVI, or
other output terminal(s), which can be connected with the display input terminal(s). The
pattern generator shall also include a trigger output signal that can be used to start the
data acquisition process.
– A fast response (rise time less than 5 µs) photo-diode or other opto-electrical detectors (3),
with a spectral sensitivity that is matched to the spectral luminous efficiency function V(λ)
for photopic vision. The detector is used to capture the temporal luminance, produced by
the DUT. As shown in Figure 6, the glasses are placed between the photo-diode and
display, the photo-diode with lens shall be used and it shall be able to focus at the display
screen to avoid the stray light.
– A signal amplifier (4), which is used for signal amplification to match the input range of the
data acquisition device and for low-pass filtering (LPF) to attenuate the signal noise. The
low-pass characteristics shall be tuned to the display response speed; the LPF cut-off
frequency shall be at least 10 kHz.
– A data acquisition device (5) that records the amplified signal v(t) of the photo-diode. The
sampling rate shall be at least 10 kHz to enable the acquisition of temporal luminance
data with sufficient temporal resolution, and furthermore the sampling rate should be
related to the refresh rate of the display to allow time accurate analysis of the data. The
minimum sampling rate per refresh rate shall be no less than 100/1. An oscilloscope or a
data-acquisition card can be used to acquire and digitize the time-varying luminance
signal.
– A luminance meter (6) that records the luminance of the display for each input code (0 to
255 for an 8-bit input signal). With this information the time varying photo-diode signal v(t)
can be translated to a time varying luminance signal L(t) = f(v(t)).
– A control system (7), for example a personal computer, which can be used to start the
measurement procedure, and to collect and process all data.
5.3.3 Measurement process
In liquid crystal displays the temporal luminance transition from one level to another depends
on the selected input codes. The time required for the transition to be completed has an
influence on the perceived motion blur, and therefore several luminance transitions need to be

– 14 – IEC 62629-12-2:2019  IEC 2019
measured. The number of luminance transition levels shall be at least seven, and they shall
be spaced equidistantly on the CIE1976 lightness scale. In order to determine the appropriate
luminance levels, first the luminance transfer function of the DUT shall be measured.
The pattern generator shall generate images with gray-level values ranging from 0 to 255 (for
an 8-bit display), and the corresponding luminance levels shall be measured with the
luminance meter. At about the same screen position, the photo-diode (3) signal shall be
measured in parallel to enable conversion from the time-varying voltage values to luminance
values. Next, the (seven) luminance levels will be used as start and end levels to measure the
temporal step responses of the DUT. In this case the pattern generator will generate the
luminance transitions, which will be recorded with the data acquisition device (5) via the
photo-diode and amplifier combination.
Multiple traces can be acquired with the control system (7) to enable temporal averaging of
the step responses. Furthermore, to assure accurate and stable start- and end-levels, the
step response should be comprised of six frames with the start-level and at least six frames
with the end-level. Of course, it is also possible and allowed to record the rising and falling
luminance transitions in one pass. The measurements can be summarized using Table 1,
where each cell in the table consists of an array with the temporal luminance data. To enable
analyzing motion related colour artifacts, tables are required for each primary colour as well
as for white (see Table 1).
5.3.4 Data analysis
5.3.4.1 Motion picture response curve
From the temporal step response of each view (left and right), the motion picture response
curve (MPRC) shall be calculated for each transition and each primary colour. This is done
with a simple convolution of the step response with a moving window function one-frame-time
wide (see for instance [13]). An example of the convolution process and results are depicted
in Figure 7.
Figure 7 – Example of temporal response of left or right view
The motion picture response curves in Figure 8 are derived from the temporal response
presented in Figure 7, and a convolution with a one-frame-wide window function is applied.

Figure 8 – Example of motion picture response curves
5.3.4.2 Motion induced edge profile
From the motion picture response curves, the edge profiles can be derived for any given
object speed. First the motion picture response curves shall be converted from the temporal
to the spatial domain using the relation x = -ν·τ / T , in which x is the position of the display
r f r
pixel, projected on the retina, τ is time, T is the frame time, and ν is the motion speed
f
expressed in pixels per frame (the minus sign indicates motion from left to right). For each
luminance transition, the edge blur profile linearly scales with the motion speed. The higher
the motion speed the less pronounced the luminance transition of the edge will be. The
visibility of the edge blur depends on the relation between the display pixel size and the
viewing distance, but also the luminance contrast and the edge profile have an effect on the
perceived edge blur. The edge profile currently is sufficient as a measure for the motion
performance, because the relation between the perceived sharpness and the edge blur is only
established for continuous backlight type LCDs (see e.g. [14]). For these LCD types, the BET
and/or EBET can be derived according to 6.2.2.
6 Test report
6.1 General
Test results of the following items shall be reported in conjunction with the test method, the
measurement conditions, and the analysis method(s).
6.2 Items to be reported
6.2.1 Environmental conditions
– Temperature, humidity, and atmospheric pressure.
– Illumination level.
– Other conditions which are different from the standard measuring conditions (Clause 5).
6.2.2 Display parameters
– Refresh rate.
– Native display resolution.
– Backlight driving (impulse, stationary, blinking, scanning, other).
– Minimum and peak luminance.
– Display gamma function (sometimes referred to as electro-optical transfer function).
– Display settings (if applicable).
– Driving mode (when optional driving modes, for example “over drives”, are installed in
the module, the driving mode used for the test shall be reported).

– 16 – IEC 62629-12-2:2019  IEC 2019
– Type of 3D glasses (active, passive).
NOTE The driving mode could interfere with experimental results.
6.2.3 Measuring method and conditions
– Measuring device (pursuit detection system, temporal step response, high speed
camera).
– Number of bits in the measuring device, used to capture the luminance signal.
– For imaging devices, the number of CCD or CMOS pixels per display pixel, the
diaphragm, the dynamic range, and the exposure time.
– For pursuit systems, the synchronization accuracy.
– For some 3D systems without an embedded 3D emitter, synchronization of the
operation of the external 3D emitter with the scrolling of the test pattern. See Annex C.
– Light measuring device (luminance meter, colour analyzer, spectroradiometer, other).
– Scroll speed(s) (for example 8 pixels/frame).
– Gray levels (start levels and end levels, see Table 1).
– Other measuring conditions, such as shutter speed of the camera, frame frequency,
etc.
6.2.4 Analysis method
– Parameter (EBET, BET).
– Threshold for EBET or BET calculation (for example 10 % to 90 %).
– If the data includes some irregularities such as overshoot, it shall be reported.
An example for visually reporting the BET analysis data is shown in Figure 9, Table 3, and
Table 4.
BET (2D mode)
BET (3D mode)
Figure 9 – Example of visually reporting BET analysis data

Table 3 – BET analysis data in 2D mode
End level (gray)
BET (2D mode)
0 60 95 120 160 200 255
0 9,49 9,88 9,92 9,97 9,86 9,73

60 9,85 9,9 9,89 9,91 9,78 9,63

95 10,19 9,51 9,96 9,93 9,79 10,02
Start
level 120 10,43 10,16 10,36 10,35 9,41 9,65

(gray)
160 9,8 10,47 9,74 10,51 9,28 10,03

200 10,07 10,03 9,8 9,87 10,28 10,46

255 9,44 9,99 10,01 9,82 9,97 10,00

Maximum 10,51 ms
Minimum 9,28 ms
Average 9,93 ms
Table 4 – BET analysis data in 3D mode
End level (gray)
BET (3D mode)
0 60 95 120 160 200 255
0 3,51 2,82 3,16 3,12 2,33 1,83

60 1,95 3,29 3,78 3,27 2,41 2,05

95 1,76 1,97 3,48 3,37 2,02 1,82
Start
level 120 2,83 3,83 2,22 2,61 3,53 1,94

(gray)
160 3,21 3,25 3,15 2,13 2,67 2,08

200 2,04 2,16 1,84 2,00 2,1 2,24

255 1,73 1,65 1,78 1,87 1,86 1,69
Maximum 3,83 ms
Minimum 1,65 ms
Average 2,48 ms
– 18 – IEC 62629-12-2:2019  IEC 2019
Annex A
(informative)
Effect of binocular saccade on 3D motion blur
When two eyes are in saccadic movements (binocular saccade), they are initially linked to be
in the same direction. Due to the binocular saccadic movements, the eye movement may not
be matched with the direction of the image movement.
This can occur when the left-eye and right-eye image moves differently because the 3D image
movement includes a vector through the z-axis (depth) direction (see Figure A.1).

Figure A.1 – Example of binocular saccade to follow the motion of 3D image
Though vergence eye movement will correct this, it is slower than the saccadic movements.
Thus, when the eyes follow the motion of a 3D image including a z-axis movement, this can
result in a different magnitude of saccade in each eye. As a result, the 3D motion blur
perceived in each eye can be different from each other.

Annex B
(informative)
Motion contrast degradation
B.1 General
Line spreading is a method to evaluate motion blur magnitude plus contrast degradation as a
function of speed, both within a single measurement. It is more efficient and simplified than
dual edge methods such as moving edge or box edge blur. It can provide meaningful results
for understanding the motion performance of a display. The width and amplitude or luminance
of the spreading line are measured.
B.2 Direct measurement
The measurement method is the same as the edge blurring method except for the test pattern
(see [9]). Since this method is targeted to measure the moving line spreading, a narrow
vertical line pattern can be used. An example of the test pattern is shown in Figure B.1

Figure B.1 – Example of motion contrast degradation test pattern
The motion contrast degradation (MCD) characteristics can be analyzed using line spreading
measurement. An example of the result is shown in Figure B.2.

– 20 – IEC 62629-12-2:2019  IEC 2019

NOTE ppf: pixels per frame.
Figure B.2 – Example of motion contrast degradation due to line spreading.

Annex C
(informative)
Activation of external 3D signal emitter
Some 3D displays do not have an embedded 3D signal emitter. If that is the case, it is
necessary to activate the external 3D signal emitter using a computer. It is also necessary to
synchronize the scrolling of the pattern and the operation of the external 3D signal emitter. A
special software can be necessary for that purpose.

– 22 – IEC 62629-12-2:2019  IEC 2019
Bibliography
[1] Y. Igarashi, et al., “Summary of moving picture response time (MPRT) and futures”,
SID International Symposium Digest of Technical Papers 35, 1262 – 1265 (2004)
[2] J. Miseli, “Motion artifacts”, SID International Symposium Digest of Technical Papers
35, 86 – 89 (2004)
[3] M. Shigeta, and H. Fukuoka, “Development of high quality LCDTV”, SID International
Symposium Digest of Technical Papers 35, 754 – 757 (2004)
[4] K. Oka, and Y. Enami, “Development of accurate and reliable system for motion picture
quality analysis”, IDW’03 Proceedings, 1483 (2003)
[5] K. Oka, and Y. Enami, “Moving picture response time (MPRT) measurement system”,
SID International Symposium Digest of Technical Papers 35, 1266 – 1269 (2004)
[6] M. Rejhon, J. Bergquist, E. F. Kelley, and P. A. Boynton, “Manual pursuit camera and a
method of verifying pursuit accuracy”, Proceedings of the 21st International Display
Workshops, VHF3-1 (2014)
[7] K. Oka, Y. Enami, J.S. Lee, and T. Jun, “Edge blur width analysis using a contrast
sensitivity function”, SID Symposium Digest Tech Papers 37, 10 – 13 (2006)
[8] P.G.J. Barten, “Contrast sensitivity of the human eye and its effects on image quality”,
SPIE Optical Engineering Press, Bellingham, Washington, 1999
[9] J. Miseli, J.S. Lee, and J.H. Suk, ”Advanced motion artifact analysis method for
dynamic contrast degradation caused by line spreading”, SID Symposium Digest Tech
Papers 37, 2 – 5 (2006)
[10] X. Li, X. Yang, and C. Teunissen, “LCD motion artifact determination using simulation
methods”, SID Symposium Digest Tech Papers 37, 6–9 (2006).
[11] C. Teunissen et al., “Method for predicting motion artifacts in matrix displays”, Journal
of the Society for Information Display 14/10, 957–964 (2006)
[12] X. Feng et al., “26.2: Comparison of Motion Blur Measurement in LCD”, SID
Symposium Digest Tech Papers 38, 1126–1129 (2007)
[13] A.B. Watson, “31.1: Invited Paper: The Spatial Standard Observer: A Human Vision
Model for Display Inspection”, SID Symposium Digest Tech Papers 37, 1312–1315
(2006)
[14] C. Teunissen et al., “Perceived motion blur in LCD displays”, Proc IDW ‘06, 1463–1466
(2006)
[15] X. Li, L. Chai, C. Teunissen, and I. Heynderickx, “Characterizing LCD motion color
artifacts using simulation methods”, SID Symposium Digest Tech Papers 38, 1130–
1133 (2007)
[16] C. Teunissen, X. Li, L.
...