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BS EN IEC 62676-5:2018

BS EN IEC 62676-5:2018

$215.11

Video surveillance systems for use in security applications – Data specifications and image quality performance for camera devices

Published By Publication Date Number of Pages
BSI 2018 128
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IEC 62676-5:2018 defines recommendations and requirements for representation and measuring methods of performance values to be described in materials such as instruction manuals, brochures and specifications of video surveillance camera equipment. The first part of this document defines requirements for description of video surveillance camera specification items. The second part defines requirements for measurement methods of video surveillance camera specification items.

PDF Catalog

PDF Pages PDF Title
2 undefined
5 Annex ZA(normative)Normative references to international publicationswith their corresponding European publications
6 English
CONTENTS
11 FOREWORD
13 INTRODUCTION
14 1 Scope
2 Normative references
15 3 Terms, definitions and abbreviations
3.1 Terms and definitions
25 3.2 Abbreviations
26 4 Description of video surveillance camera specification items
4.1 General
4.2 Camera
4.2.1 Image sensor
29 4.2.2 Maximum resolution
4.2.3 Minimum illumination
30 4.2.4 Signal to noise ratio (SNR, S/N ratio)
4.2.5 White balance
31 4.2.6 Electronic shutter
4.2.7 Electronic sensitivity up (Slow shutter)
32 4.2.8 Dynamic range (DR)
4.2.9 Visible dynamic range (VDR)
4.2.10 Infra-red illumination operating view distance
33 4.2.11 Day/Night mode (D/N)
4.2.12 Internal image processing performance
34 4.3 Lens
4.3.1 Focal length
4.3.2 Relative aperture (F-number)
4.3.3 Field of view
35 4.3.4 Image distortion
4.3.5 Iris control
4.3.6 Mount type
36 4.3.7 Image flare
4.4 Input / Output
4.4.1 Video output
4.4.2 Auto-iris lens output
37 4.5 Video output format
4.5.1 Image format standard
4.5.2 Colour representation
4.5.3 Output image pixel number
38 4.5.4 Output image resolution
4.6 Pan and tilt
4.6.1 Rotation angle
4.6.2 Rotation speed
39 4.6.3 Preset position function
4.6.4 Preset position accuracy
4.6.5 Audible noise
40 4.7 Network
4.7.1 Network interface
4.7.2 Image and video compression format
4.7.3 Bit rate control
41 4.7.4 Maximum frame rate
4.7.5 Maximum number of encoding streams
42 4.7.6 Multicast streaming
4.7.7 Maximum number of connections
4.7.8 Total encoding performance
4.7.9 Image stream delay (Latency)
43 4.7.10 Camera storage (Local storage)
4.7.11 Audio function
4.7.12 Network protocol
44 4.7.13 Camera time synchronization and localization
4.8 Network security
4.8.1 General description
4.8.2 Network authentication
45 4.8.3 Video authentication and watermarking
4.9 Other specifications
5 Measurement methods of video surveillance camera specification items
5.1 Setting of standard shooting condition
5.1.1 General
46 5.1.2 Common standard shooting condition
Tables
Table 1 – Lighting condition
47 Table 2 – Relation of illuminance and luminance
Table 3 – Standard camera settings
48 5.2 Video signal quantization level
5.2.1 General
5.2.2 Digital video signal quantization level
5.2.3 Other quantization levels
5.3 Measurement environment
5.3.1 General
Table 4 – Digital video signal quantization level
49 5.3.2 Test chart
Figures
Figure 1 – Test set-up for reflective test chart
50 Figure 2 – Test set-up for transparent test chart
51 Figure 3 – Test set-up for fixture with lamps
52 5.3.3 Software for measurement
5.4 Measuring methods
5.4.1 General
5.4.2 Resolution
Figure 4 – Alignment of the camera with the target plane using a mirror
53 Figure 5 – IEC 61146-1 No. 4 and No. 5 (Resolution chart)
Table 5 – Camera settings for resolution
54 Figure 6 – ISO 12233:2000 Resolution test chart
55 Figure 7 – Sine wave modulated starburst pattern test chart
57 Figure 8 – The star is divided into eight segments for the analysis
Figure 9 – The star is analysed radius by radius, equivalent to frequency by frequency
58 Figure 10 – The pixels along a specific radius are located
Figure 11 – Digital code values as a function of the angle
59 Figure 12 – Calculation of the contrast of the sine curve
60 5.4.3 Minimum illumination
Table 6 – Camera settings for minimum illumination
61 Figure 13 – Example of grey scale test chart
Figure 14 – Example of OECF transparent test chart
62 Figure 15 – Signal difference between white area and black surrounding
63 5.4.4 Dynamic range
Table 7 – Camera settings for dynamic range
64 Figure 16 – Example of lamp fixture
65 Figure 17 – Possible arrangements of luminance levels
69 Table 8 – Example results of dynamic range measurement
71 5.4.5 Visible dynamic range (VDR)
Figure 18 – Graphical presentation of results
72 Table 9 – Camera settings for visible dynamic range
73 Figure 19 – Example of signal level
74 5.4.6 Infra-red illumination operating view distance
Figure 20 – Graphical presentation of results
Table 10 – Camera settings for IR illumination operating view distance
75 Figure 21 – White chart
Figure 22 – Camera positioning
76 Figure 23 – Video level
77 5.4.7 Image distortion
Figure 24 – Conversion measurement using electronic shutter
78 Figure 25 – Regular grid (solid lines) in the scene is distorted and the red diamonds mark the position of the intersections in the image produced by the camera
79 Figure 26 – Line grid pattern chart
81 5.4.8 Image flare
Figure 27 – Schematic drawings for measuring the horizontal line distortion
Figure 28 – Schematic drawings for measuring the vertical line distortion
82 Table 11 – Camera settings for image flare
83 Figure 29 – Example test chart with multiple black areas (“Dot pattern chart”)
84 Figure 30 – Set-up of image flare device
85 Figure 31 – Image flare lamp for cameras with small field of view (large focal length)
Figure 32 – Image flare lamp for cameras with large field of view (short focal length)
87 Figure 33 – Evaluation area
88 5.4.9 Capture frame rate
89 Figure 34 – Frame rate test target
Table 12 – Camera settings for capture frame rate
92 Annex A (normative)Sine wave star test chart
Figure A.1 – Sine wave test chart (multiple target version)
93 Table A.1 – Features of sine wave test chart
94 Table A.2 – Design of sine wave star test chart
95 Annex B (informative)Infra-red illuminator safety requirements according to IEC 62471
B.1 General
B.2 Declaration of the hazard distance
96 B.3 Other information to be declared
B.4 Item indication
B.5 Content indication
97 Annex C (informative)Low light performance method
C.1 General
C.1.1 General
C.1.2 Test chart
Figure C.1 – An example for a multipurpose test chart with frame rate tester
98 C.1.3 Creation of the coloured dead leaves structure
C.1.4 Capturing a reference image
C.1.5 Capture of the test images
C.1.6 Image quality aspects affected by low light
100 C.1.7 Presentation of the results
C.2 Example for generating a single performance value from measured results
Table C.1 – Results table of an example camera
101 C.3 Description of test chart example
C.3.1 General
Table C.2 – Results table of an example camera
102 C.3.2 Chart sizes and background
C.3.3 Sine wave modulated starburst patterns
C.3.4 OECF patches
C.3.5 Colour patches
Figure C.2 – An example for a multipurpose test chart
104 C.3.6 Dead leaves
105 C.3.7 Slanted edges and visual structures
C.3.8 Small sine wave modulated starburst patterns
C.3.9 Centre marks
106 Annex D (informative)Streaming bit rate (bit-stream)
D.1 General
D.2 Description
D.3 Uncompressed and compressed video streams
107 D.4 Content indication
D.4.1 General
D.4.2 Video streaming in a system
D.4.3 Network traffic analysis (NTA)
108 D.5 Measuring the video streaming
D.5.1 General
D.5.2 The procedure of measuring streaming bit rate in a system
109 Figure D.1 – Network connection for video streaming measurement
110 Figure D.2 – An example graph of network traffic
111 Annex E (informative)IP video latency measurement
E.1 General
E.2 Description
Figure E.1 – Comparison of image compression and video compression
112 Figure E.2 – Example of GOP
113 E.3 Visual perception of the latency
E.4 Measurement procedure for IP video latency
114 E.5 Content indication
Figure E.3 – Video latency
115 Annex F (informative)Motion blur measurement
F.1 General
F.2 Description
F.3 Projected pixel shift (PPS) due to moving objects
F.4 Content indication
Figure F.1 – Motion blur due to moving objects
116 F.5 Calculating the projected pixel shift of moving objects
Figure F.2 – Calculation of projected pixel shift
117 F.6 Calculating the projected pixel shift of moving objects at various angles
F.7 Acceptable PPS
Figure F.3 – Movement in various angles
118 F.8 Test chart measuring of moving objects
119 Figure F.4 – Measuring of moving objects
121 Figure F.5 – Example of moving test chart
122 Annex G (informative)SD/HD test target example
Figure G.1 – SD/HD test target example
123 Annex H (informative)UL test chart implementations
124 Annex I (informative)Explanation of image flare from light sourcewithin and outside of camera field of view
I.1 Image flare of light source within the field of view
I.2 Image flare of light source outside of the field of view
Figure I.1 – Image flare from a light source within the camera field of view
125 Figure I.2 – Image flare from a light source outside of the camera field of view
126 Bibliography

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BS EN IEC 62676-5:2018
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