IEC 62676-5-1:2024

Video surveillance systems for use in security applications - Part 5-1: Data specifications and image quality performance for camera devices - Environmental test methods for image quality performance

IEC 62676-5-1:2024 defines measuring methods for performance values of video surveillance camera equipment and defines image quality tests under the given temperature and humidity environment.
This document is mainly targeting cameras with integrated lenses as the lenses are a major component that can impact the results. If the lens is selectable, the lens will be stated together with the results.

Systèmes de vidéosurveillance destinés à être utilisés dans les applications de sécurité - Partie 5-1: Spécifications des données et performances de la qualité d'image pour les dispositifs de caméra - Méthodes d'essai d'environnement pour les performances de la qualité d'image

IEC 62676-5-1:2024 est une extension de l'IEC 62676-5 qui définit les méthodes de mesure des valeurs de performances des caméras de vidéosurveillance ainsi que les essais de qualité d'image dans l'environnement de température et d'humidité donné.
Le présent document concerne principalement les caméras avec objectifs intégrés, car ces derniers constituent une composante majeure qui peut avoir un impact sur les résultats. Si l'objectif est sélectionnable, celui-ci sera intégré avec les résultats.

General Information

• Status: Published
• Publication Date: 17-Jul-2024
• ICS: 13.320 - Alarm and warning systems
• Technical Committee: TC 79 - Alarm and electronic security systems
• Drafting Committee: WG 12 - TC 79/WG 12
• Current Stage: PPUB - Publication issued
• Start Date: 18-Jul-2024
• Completion Date: 02-Aug-2024

Standards Content (Sample)

IEC 62676-5-1 ®
Edition 1.0 2024-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Video surveillance systems for use in security applications –
Part 5-1: Data specifications and image quality performance for camera devices –
Environmental test methods for image quality performance

Systèmes de vidéosurveillance destinés à être utilisés dans les applications de
sécurité –
Partie 5-1: Spécifications des données et performances de la qualité d'image
pour les dispositifs de caméra – Méthodes d'essai d'environnement pour les
performances de la qualité d'image
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IEC 62676-5-1 ®
Edition 1.0 2024-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Video surveillance systems for use in security applications –

Part 5-1: Data specifications and image quality performance for camera devices –

Environmental test methods for image quality performance

Systèmes de vidéosurveillance destinés à être utilisés dans les applications de

sécurité –
Partie 5-1: Spécifications des données et performances de la qualité d'image

pour les dispositifs de caméra – Méthodes d'essai d'environnement pour les

performances de la qualité d'image

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 13.320  ISBN 978-2-8322-9345-4

– 2 – IEC 62676-5-1:2024 © IEC 2024
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
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 Test environment . 7
4.1 Overview. 7
4.2 Test environment configuration . 7
4.3 Measurement environment . 7
5 Test . 8
5.1 General test conditions . 8
5.2 General standard photographing conditions . 8
5.2.1 Lighting conditions . 8
5.2.2 Field angle . 9
5.2.3 Lens iris . 9
5.2.4 Standard camera settings . 9
5.3 Image quality . 9
5.3.1 Resolution . 9
5.3.2 Results of resolution . 10
5.4 Environmental test method . 10
5.4.1 Testing conditions . 10
5.4.2 High temperature operation test . 11
5.4.3 Low temperature operation test . 12
5.4.4 High temperature and high humidity operation test . 13
5.4.5 Performance recovery . 14
5.4.6 Reporting of test results . 14
5.5 Specification indication . 14
Annex A (normative) How to measure the sight glass illuminance attenuation rate . 15
Bibliography . 16

Figure 1 – Example of measurement environment . 8
Figure 2 – Profile of the high temperature operation test . 11
Figure 3 – Profile of the low temperature operation test . 12
Figure 4 – Example of the high temperature high humidity operation test . 13
Figure A.1 – Schematic diagram: Glass sight illuminance attenuation measurement . 15

Table 1 – Camera settings for resolution . 9

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
VIDEO SURVEILLANCE SYSTEMS FOR USE –
IN SECURITY APPLICATIONS –
Part 5-1: Data specifications and image quality performance for camera
devices – Environmental test methods for image quality performance

FOREWORD
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IEC 62676-5-1 has been prepared by IEC technical committee 79: Alarm and electronic security
systems. It is an International Standard.
This International Standard is to be used in conjunction with IEC 62676-5:2018.

– 4 – IEC 62676-5-1:2024 © IEC 2024
The text of this International Standard is based on the following documents:
Draft Report on voting
79/704/FDIS 79/709/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
A list of all parts in the IEC 62676 series, published under the general title Video surveillance
systems for use in security applications, can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn, or
• revised.
INTRODUCTION
The goal of this document is to define the performance test methods for image quality, a feature
of video surveillance systems which is subject to change depending on the environmental
conditions (temperature and humidity).

– 6 – IEC 62676-5-1:2024 © IEC 2024
VIDEO SURVEILLANCE SYSTEMS FOR USE –
IN SECURITY APPLICATIONS –
Part 5-1: Data specifications and image quality performance for camera
devices – Environmental test methods for image quality performance

1 Scope
This part of IEC 62676 is an extension of IEC 62676-5 which defines measuring methods for
performance values of video surveillance camera equipment and defines image quality tests
under the given temperature and humidity environment.
This document is mainly targeting cameras with integrated lenses as the lenses are a major
component that can impact the results. If the lens is selectable, the lens will be stated together
with the results.
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 60068-2-1:2007, Environmental testing – Part 2-1: Tests – Test A: Cold
IEC 60068-2-2:2007, Environmental testing – Part 2-2: Tests – Test B: Dry heat
IEC 62676-5:2018, Video surveillance systems for use in security applications – Part 5: Data
specifications and image quality performance for camera devices
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following
addresses:
• IEC Electropedia: available at https://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp
3.1.1
colour temperature
numerical value used to indicate the chromaticity of a light source that has a spectral distribution
of (or close to) the radiation generated when heat is applied to a blackbody radiator
3.1.2
gain
camera's function to amplify the electronic signal

3.1.3
image
visual representation of a scene shown through the camera
Note 1 to entry: The term "image" in this document shall include multiple images within an image stream.
3.1.4
image quality
precision with which an image reproduces the captured scene
Note 1 to entry: Image quality is measured as a collection of parameters like sharpness, brightness, colour
reproduction, resolution, uniformity of illumination, contrast, image distortion (see IEC 62676-5).
3.1.5
resolution
ability of a camera or video system to reproduce the details of the original scene
3.1.6
stable temperature
state reached when the internal object temperature changes less than 0,1 °C for a period of
5 min, with a measurement integration time of > 10 s
3.1.7
field of view
angle at which a camera can capture an image through the lens
Note 1 to entry: The field of view is expressed as a horizontal field of view, a vertical field of view, and a diagonal
field of view.
3.2 Abbreviated terms
AGC automatic gain control
CPU central processing unit
MTF modulation transfer function
s-SFR sine-based spatial frequency response
4 Test environment
4.1 Overview
Clause 4 provides general conditions of the test environment and equipment configuration
necessary for the evaluation of image quality in accordance with the temperature and humidity
conditions during operation of a video surveillance system.
4.2 Test environment configuration
Standard measurement conditions shall follow IEC 62676-5:2018, 5.1.
Measurement shall be at a room temperature of 23 °C ± 2 °C.
4.3 Measurement environment
The measurement environment shall follow IEC 62676-5:2018, 5.3.
As environmental testing is required, the test equipment shall be placed into an environmental
chamber to change environmental conditions. An example of the measurement environment is
shown in Figure 1.
– 8 – IEC 62676-5-1:2024 © IEC 2024

Figure 1 – Example of measurement environment
The structure of the test equipment consists of a thermo-hygrostat chamber with a sight glass,
an evaluation sample camera, a jig (for horizontal or vertical control of the evaluation sample
camera), a chart (test chart), a light source, and baffles. The test lab shall be a dark space
(matte black walls or a black background).
Only the evaluation sample camera shall be placed in the thermo-hygrostat chamber. Other
measurement equipment such as test chart, light source and others shall not be placed inside
the thermo-hygrostat chamber because specifications are not guaranteed in conditions different
from room temperature.
The distance between the evaluation sample camera and the sight glass shall be as close as
possible to avoid reflection or other optical issues.
When a 3 100 K light source is irradiated, the illuminance attenuation of 50 % or less shall be
maintained compared to the conditions without a sight glass. See Annex A for the method of
measuring the sight glass illuminance attenuation rate.
NOTE Baffles are used to prevent the light source from directly irradiating the evaluation sample camera, but it can
be removed if the camera is not influenced by the configuration of the test lab.
5 Test
5.1 General test conditions
General test conditions shall follow IEC 62676-5:2018, 5.3.
5.2 General standard photographing conditions
5.2.1 Lighting conditions
Lighting conditions shall follow IEC 62676-5:2018, 5.1.2.1.

5.2.2 Field angle
Field angle shall follow IEC 62676-5:2018, 5.1.2.4.
5.2.3 Lens iris
Lens iris shall follow IEC 62676-5:2018, 5.1.2.5.
5.2.4 Standard camera settings
Standard camera settings shall follow IEC 62676-5:2018, 5.1.2.6.
5.3 Image quality
5.3.1 Resolution
5.3.1.1 General
To evaluate the resolution change as part of the image quality in the environmental conditions
of video surveillance system cameras, the sine-based spatial frequency response (s-SFR)
measurement method defined in IEC 62676-5:2018, 5.4.2.4, shall be used.
In IEC 62676-5:2018, 5.4.2.3, the visual resolution method using a resolution chart to determine
the visibility of the wedge pattern is introduced. This method can be used where it is not possible
to apply the s-SFR method requiring video capture and calculation on a personal computer.
In case the visual resolution method is used it shall be reported together with the results.
5.3.1.2 Camera setting conditions
The camera setting conditions shall be in accordance with the general camera standard settings
in 5.2.4, except for the items listed in Table 1.
In the case where it is possible to have the settings indicated in Table 1 (or other similar settings)
below, such settings shall apply.
Table 1 – Camera settings for resolution
Item Settings
Automatic gain control (AGC) OFF
Gain 0 dB
For cameras that cannot be set as above, use the default values (factory default settings).
High CPU load (e.g. multi-stream, multi-codecs, high-bandwidth output, etc.) can lead to
increase of the internal temperature of the camera and can affect the results. If the test is done
in a different setting from above, the conditions shall be stated with the result.
5.3.1.3 Prior test of sight glass impact
The optical characteristics (e.g. modulation transfer function (MTF)) of the sight glass are
usually not defined and are unknown. Therefore, the effect on resolution measurement shall be
measured beforehand to test whether the sight glass can qualify the resolution measurement
with the target camera to be tested. The degradation of resolution with and without the sight
glass shall be less than 10 %. If the resolution degradation result is greater than 10 %, this
measurement shall be done with another thermo-hygrostat chamber that fulfils this requirement.

– 10 – IEC 62676-5-1:2024 © IEC 2024
To determine the resolution degradation the SFR 10 is measured according to ISO 12233 at
environmental conditions in the test chamber identical to the room conditions, one with closed
and another one with open door.
5.3.1.4 Sine-based spatial frequency response (s-SFR)
Sine-based spatial frequency response measurements (s-SFR) shall be made in accordance
with IEC 62676-5:2018, 5.4.2.4, in the measurement environment specified in 4.3 with sight
glass.
5.3.2 Results of resolution
The resolution measurement result shall be described as "lines", which is equal to line width
per picture height (lw/ph).
5.4 Environmental test method
5.4.1 Testing conditions
The temperature and humidity to test environmental conditions shall be specified by the product
specification, project requirement or end-user requests because environmental conditions,
especially temperature, differ depending on the use case.
Temperature ranges in product specifications usually indicate the limit of operating conditions,
which means the sample camera will operate but the quality will probably not fulfil user
expectations. Therefore, these temperature ranges are not sufficient for performance testing. A
certain temperature and humidity within the operating temperature and humidity range window
(e.g. within 5° or 10°) is recommended.
Below are examples.
EXAMPLE 1
10° within operating temperature window
Camera A operating temperature: −10 °C to 50 °C
Camera A operating humidity: 0 % RH to 95 % RH
Test condition (low temperature): 0 °C
Test condition (high temperature): 40 °C
Test condition (low humidity): 50 % RH
Test condition (high humidity): 90 % RH
EXAMPLE 2
5° within operating temperature window.
Camera B operating temperature: −20 °C to 55 °C
Camera B operating humidity: 0 % RH to 80 % RH
Test condition (low temperature): –15 °C
Test condition (high temperature): 50 °C
Test condition (low humidity): 60 % RH
Test condition (high humidity): 80 % RH

5.4.2 High temperature operation test
5.4.2.1 Purpose
This test is to compare the image quality performance before, during, and after the high
temperature, and thereby simulate the environment in which the video surveillance camera is
actually used.
5.4.2.2 Test conditions
"Test Be: Dry heat for heat-dissipating specimens with gradual change of temperature that are
required to be powered throughout the test" in IEC 60068-2-2:2007, 5.4, shall apply.
Determine the high temperature to be tested under the conditions described in 5.4.1.
NOTE The tolerable deviation of the thermostat temperature is ±3 °C.
5.4.2.3 Test procedure
1) At room temperature defined in 4.2, install the video surveillance camera on the jig under
the conditions specified in 4.3 and 5.2.
2) Set the thermo-hygrostat to room temperature and wait until it reaches the target
temperature. Record the time to reach the target temperature in the report.
3) When the temperature is maintained at room temperature, supply power to the video
surveillance camera and wait for the camera to reach its stable temperature before
measuring the initial performance. When in doubt the minimum time to wait for the device
to reach its stable temperature should be 4 h.
4) After the initial performance measurement, set the temperature defined in 5.4.2.2. The rate
of change of temperature within the chamber shall not exceed 1 °C/min where the averaged
period of temperature measurement shall be less than 5 min. Refer to the graph of
temperature shown in Figure 2.
5) Measure the operation performance after holding the temperature defined in 5.4.2.2 for the
time necessary to stabilize the camera temperature (see test procedure 3)). Then measure
the high temperature performance. After measuring, set the temperature to room
temperature. The rate of change of temperature within the chamber shall not exceed
1 °C/min where the averaged period of temperature measurement shall be less than 5 min.
Refer to the graph of temperature shown in Figure 2.
6) When the temperature is maintained at room temperature, maintain it for the time necessary
to stabilize the camera temperature (see test procedure 3)) and then measure the recovery
performance.
EXAMPLE A > 2 h, B < 1 °C/min, C > 2 h, D < 1 °C/min, E > 2 h
Figure 2 – Profile of the high temperature operation test
The test facility, initial performance, operation performance, and recovery performance data
shall be recorded.
– 12 – IEC 62676-5-1:2024 © IEC 2024
5.4.3 Low temperature operation test
5.4.3.1 Purpose
This test is to compare the image quality performance before, during, and after the low
temperature operation, and thereby, to simulate the environment in which the video surveillance
camera is actually used.
5.4.3.2 Test conditions
"Test Ae: Cold for heat-dissipating specimens with gradual change of temperature that are
required to be powered throughout the test" in IEC 60068-2-1:2007, 5.4 shall apply.
Determine the low temperature to be tested under the conditions described in 5.4.1.
NOTE The tolerable deviation of the thermostat temperature is ±3 °C.
5.4.3.3 Test procedure
1) At room temperature defined in 4.2, install the video surveillance camera on the jig under
the conditions specified in 4.3 and 5.2.
2) Set the thermo-hygrostat to room temperature and wait until it reaches the target
temperature. Record the time to reach the target temperature in the report.
3) When the temperature is maintained at room temperature, supply power to the video
surveillance camera and wait for the camera to reach its stable temperature before
measuring the initial performance. When in doubt the minimum time to wait for the device
to reach its stable temperature should be 4 h.
4) After the initial performance measurement, set the temperature defined in 5.4.3.2. The rate
of change of temperature within the chamber shall not exceed 1 °C/min where the averaged
period of temperature measurement shall be less than 5 min. Refer to the graph of
temperature shown in Figure 3.
5) Measure the operation performance after holding the temperature defined in 5.4.3.2 for the
time necessary to stabilize the camera temperature (see test procedure 3)). Then measure
the low temperature performance. After measuring, set the temperature to room
temperature. The rate of change of temperature within the chamber shall not exceed
1 °C/min where the averaged period of temperature measurement should be less than
5 min. Refer to the graph of temperature shown in Figure 3.
6) When the temperature is maintained at room temperature, maintain it for the time necessary
to stabilize the camera temperature (see test procedure 3)) and then measure the recovery
performance.
EXAMPLE A > 2 h, B < 1 °C/min, C > 2 h, D < 1 °C/min, E > 2 h
Figure 3 – Profile of the low temperature operation test
The test facility, initial performance, operation performance, and recovery performance
information shall be recorded.

5.4.4 High temperature and high humidity operation test
5.4.4.1 Purpose
This test is to compare the image quality performances before, during and after a high
temperature and high humidity operation, and thereby, to simulate the environment in which the
video surveillance camera is actually used.
5.4.4.2 Test conditions
The conditions defined in IEC 60068-2-78 may apply.
Determine the high temperature and high humidity to be tested under the conditions described
in 5.4.1.
NOTE The tolerable deviation of the temperature is ±3 °C, the tolerable deviation of the relative humidity is ±3 %.
5.4.4.3 Test procedure
1) At room temperature defined in 4.2, install the video surveillance camera on the jig under
the conditions specified in 4.3 and 5.2.
2) Set the thermo-hygrostat to room temperature and humidity (maximum 75 % RH) and wait
until it reaches the target temperature. Record the time to reach the target temperature in
the report.
3) When the temperature and humidity are maintained at room condition, supply power to the
video surveillance camera and wait for the camera to reach its stable temperature before
measuring the initial performance. When in doubt the minimum time to wait for the device
to reach its stable temperature should be 4 h.
4) After the initial performance measurement, set the temperature defined in 5.4.4.2. The rate
of change of temperature within the chamber shall not exceed 1 °C/min where the averaged
period of temperature measurement shall be less than 5 min. Refer to the graph of
temperature and humidity shown in Figure 4. Adjust the humidity to the specified severity
within a time of not more than 2 h.
5) Measure the operation performance after holding the conditions defined in 5.4.4.2 for at
least 4 h. Then measure the high temperature and high humidity performance. After
measuring, set the relative humidity to room conditions (maximum 75 % RH) in not more
than 30 min, after which the temperature shall be adjusted to room temperature in not more
than 30 min. Refer to the graph of temperature and humidity shown in Figure 4.
6) When the temperature and humidity are maintained at room conditions, maintain them for
the time necessary to stabilize the camera temperature (see test procedure 3)) and then
measure the recovery performance.

EXAMPLE A > 2 h, B < 1 °C/min, B` < 2 h, C > 4 h, D < 30 min, D` < 30 min, E > 2 h.
Figure 4 – Example of the high temperature high humidity operation test

– 14 – IEC 62676-5-1:2024 © IEC 2024
The test facility, initial performance, operational performance, and recovery performance
information shall be recorded.
5.4.5 Performance recovery
Tests of environmental conditions within the product specification operation temperature should
not damage the performance of the product. Therefore, recovery performance measured after
the environmental conditions should obtain nearly the same result as that of the initial
performance. If the recovery performance differs by more than 5 % from the initial performance,
the test condition will possibly have caused irreversible impact to the test product and the result
shall not be used.
5.4.6 Reporting of test results
The test result(s) shall be reported as the ratio of initial performance and operation performance
as shown below.
R R – RR/× 100
( )
r ei i
where
R is the resolution ratio;
r
R is the initial resolution;
i
R is the environmental resolution.
e
Report the temperature (and humidity for high humidity test) and the resolution ratio R for high
r
temperature, low temperature and high temperature/high humidity test.
5.5 Specification indication
The result shall be indicated in the specification.
EXAMPLE 1 Environmental image quality performance in accordance with IEC 62676-5-1: high temperature
+50 °C; resolution ratio −10 %.
EXAMPLE 2 Environmental image quality performance in accordance with IEC 62676-5-1: low temperature
−10 °C; resolution ratio −20 %.
EXAMPLE 3 Environmental image quality performance in accordance with IEC 62676-5-1: high temperature and
high humidity +40 °C / 90 % RH; resolution ratio −10 %.
=
Annex A
(normative)
How to measure the sight glass illuminance attenuation rate

Figure A.1 – Schematic diagram: Glass sight illuminance attenuation measurement
A light source, an illuminometer, and a thermo-hygrostat are required to measure the glass
sight illuminance attenuation (see Figure A.1). The colour temperature condition of the light
source is (3 100 K ± 100 K) and the measurement shall be conducted under the lab conditions
mentioned in 4.2. The illuminometer shall be located in the centre of the sight glass and shall
be level with the light source. The illuminometer shall display (1 000 lx ± 100 lx) either by
adjusting the distance between the light source and the sight glass or adjusting the light source.
After the illuminometer reading is set to (1 000 lx ± 100 lx), the door of the thermo-hygrostat
shall be opened to measure the illuminance without a sight glass; the sight glass illuminance
attenuation rate shall be obtained using Formula (A.1):
L
g
L % ×1 00 %
( ) ( )
(A.1)
d
L
wg
where
L is the sight glass illuminance attenuation rate;
d
L is the illuminance without a sight glass;
wg
L is the illuminance with a sight glass.
g
=
– 16 – IEC 62676-5-1:2024 © IEC 2024
Bibliography
IEC 60068-2-78, Environmental testing – Part 2-78: Tests – Test Cab: Damp heat, steady state
IEC 61988-4-1, Plasma display panels – Part 4-1: Environmental testing methods – Climatic
and mechanical
IEC 62599-1, Alarm systems – Part 1: Environmental test methods
IEC 62676-1-1, Video surveillance systems for use in security applications – Part 1-1: System
requirements – General
IEC 62676-2-1, Video surveillance systems for use in security applications – Part 2-1: Video
transmission protocols – General requirements
IEC 62676-3, Video surveillance systems for use in security applications – Part 3: Analog and
digital video interfaces
IEC 62676-4, Video surveillance systems for use in security applications – Part 4: Application
guidelines
ISO 12231, Photography – Electronic still picture imaging – Vocabulary
ISO 12233, Photography – Electronic still picture imaging – Resolution and spatial frequency
responses
ISO 14524, Photography – Electronic still-picture cameras – Methods for measuring opto
electronic conversion functions (OECFs)
___________
– 18 – IEC 62676-5-1:2024 © IEC 2024
SOMMAIRE
AVANT-PROPOS . 19
INTRODUCTION . 21
1 Domaine d'application . 22
2 Références normatives . 22
3 Termes, définitions et abréviations . 22
3.1 Termes et définitions . 22
3.2 Abréviations . 23
4 Environnement d’essai . 23
4.1 Vue d'ensemble . 23
4.2 Configuration de l'environnement d'essai . 23
4.3 Environnement de mesure . 23
5 Essai . 24
5.1 Conditions générales d'essai . 24
5.2 Conditions générales normalisées de photographie . 25
5.2.1 Conditions d'éclairage . 25
5.2.2 Angle de champ . 25
5.2.3 Diaphragme de l'objectif . 25
5.2.4 Réglages de caméra étalons. 25
5.3 Qualité d’image . 25
5.3.1 Résolution . 25
5.3.2 Résultats de résolution . 26
5.4 Méthode d'essai d'environnement . 26
5.4.1 Conditions d’essai . 26
5.4.2 Essai de fonctionnement à haute température . 27
5.4.3 Essai de fonctionnement à basse température . 28
5.4.4 Essai de fonctionnement à haute température et à humidité élevée . 29
5.4.5 Performances de reprise . 30
5.4.6 Consignation des résultats de l'essai . 30
5.5 Indication de la spécification . 31
Annexe A (normative) Mesurage du taux d'atténuation de l'éclairement de la vitre de
contrôle . 32
Bibliographie . 33

Figure 1 – Exemple d'environnement de mesure . 24
Figure 2 – Profil de l'essai de fonctionnement à haute température . 28
Figure 3 – Profil de l'essai de fonctionnement à basse température . 29
Figure 4 – Exemple d'essai de fonctionnement à haute température et à humidité
élevée . 30
Figure A.1 – Diagramme schématique: Mesurage de l'atténuation de l'éclairement de
la vitre de contrôle . 32

Tableau 1 – Réglages de caméra pour la résolution . 25

COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE
____________
SYSTÈMES DE VIDÉOSURVEILLANCE DESTINÉS À ÊTRE UTILISÉS
DANS LES APPLICATIONS DE SÉCURITÉ –

Partie 5-1: Spécifications des données et performances de la qualité
d'image pour les dispositifs de caméra – Méthodes d'essai
d'environnement pour les performances de la qualité d'image

AVANT-PROPOS
1) La Commission Électrotechnique Internationale (IEC) est une organisation mondiale de normalisation composée
de l'ensemble des comités électrotechniques nationaux (Comités nationaux de l’IEC). L’IEC a pour objet de
favoriser la coopération internationale pour toutes les questions de normalisation dans les domaines de
l'électricité et de l'électronique. À cet effet, l’IEC – entre autres activités – publie des Normes internationales,
des Spécifications techniques, des Rapports techniques, des Spécifications accessibles au public (PAS) et des
Guides (ci-après dénommés "Publicat
...