Red light violations: camera technical requirements
General requirements include CMOS sensors, H.264/H.265 encoding, ONVIF compatibility, Web interface, and support for standard network protocols (TCP/IP, HTTP, RTSP, etc.). Refer to Table 5 below for more details.
Table 5
Preliminary Technical Requirements for LPR Cameras
| Characteristic | Requirement |
| CMOS sensor | 1/2.8" or larger |
| Light sensitivity | ≤ 0.005 lx for color image with AGC enabled at 30 IRE signal level; ≤ 0.0005 lx for B/W image with AGC enabled at 30 IRE signal level |
| Manual electronic shutter speed adjustment | 1/50 s – 1/5000 s |
| Number of video streams | 2 or more |
| Resolution of the primary stream | 1920×1080 to 2560×1920 pixels |
| Resolution of the secondary stream | From 640×480 (4:3) or 640×360 (16:9) up to 1280×720 pixels |
| Frame rate | 25 fps or higher |
| Lens focal length | 4 mm or greater (lenses with minimal nonlinear distortion are recommended) |
| Focus adjustment | For cameras with variable focal length, a motorized lens or motorized back-focus adjustment is recommended |
| Iris control | Automatic / manual |
| Bitrate of primary stream | 1024 Kbps to 6 Mbps |
| Bitrate of secondary stream | 512 Kbps to 1 Mbps |
| Video encoding type | CBR (VBR if CBR cannot be configured) |
| Video encoding protocol | H.264 and/or H.265 |
| Audio encoding protocol | G.711ulaw (8-bit, 8 kHz mono), AAC, or PCM (support for at least one protocol) |
| Supported network protocols | TCP/IP, ICMP, HTTP, HTTPS, RTP, RTSP, NTP, SNMP, IGMP, IPv4 and/or IPv4/v6 |
| Video transmission protocol | RTP over TCP |
| ONVIF compatibility (PROFILE S, PROFILE G) | Required for cameras with controllable components (lens, positioning, etc.) |
| Camera configuration interface | Web interface (IE 7.0+, Google Chrome 54.0+, Firefox 49.0+) |
| Video image settings | Saturation, brightness, contrast, sharpness, corridor mode, image overlay |
| Image enhancement technologies | DNR, BLC (HLC) |
| Security features | User authentication for Web interface access; authentication for RTSP stream access; IP or MAC address filtering |
Preliminary Technical Requirements for TL Cameras
| Characteristic | Requirement |
| CMOS sensor | 1/3" or larger |
| Light sensitivity | ≤ 0.01 lx for color image with AGC enabled at 30 IRE signal level; ≤ 0.001 lx for B/W image with AGC enabled at 30 IRE signal level |
| Number of video streams | 2 or more |
| Resolution of the primary stream | 1920×1080 to 2560×1920 pixels |
| Resolution of the secondary stream | From 640×480 (4:3) or 640×360 (16:9) up to 1280×720 pixels |
| Frame rate | 12 to 25 fps |
| Lens focal length | 4 mm or greater (lenses with minimal nonlinear distortion are recommended) |
| Iris control method | Hardware (DC IRIS / P-IRIS) |
| Iris control | Automatic / manual |
| Bitrate of primary stream | 1024 Kbps to 6 Mbps |
| Bitrate of secondary stream | 512 Kbps to 1 Mbps |
| Video encoding type | CBR (VBR if CBR cannot be configured) |
| Video encoding protocol | H.264 and/or H.265 |
| Audio encoding protocol | G.711ulaw (8-bit, 8 kHz mono), AAC, or PCM (support for at least one protocol) |
| Supported network protocols | TCP/IP, ICMP, HTTP, HTTPS, RTP, RTSP, NTP, SNMP, IGMP, IPv4 and/or IPv4/v6 |
| Video transmission protocol | RTP over TCP |
| ONVIF compatibility (PROFILE S, PROFILE G) | Required for cameras with controllable components |
| Camera configuration interface | Web interface (IE 7.0+, Google Chrome 54.0+, Firefox 49.0+) |
| Image settings | Saturation, brightness, contrast, sharpness, corridor mode, image overlay |
| Image enhancement technologies | WDR, DNR, BLC, anti-banding |
| Security features | User authentication (Web interface); RTSP authentication; IP/MAC filtering |
| Built-in illumination | 30 m or more (recommended: 50 m or more) |
| Power supply | PoE 802.3af or 802.3at (12 V or 24 V allowed if specified in design) |
| Operating temperature range | –30 °C to +40 °C |
| Environmental protection rating | IP66 or higher |
Preliminary Technical Requirements for OV Cameras
| Characteristic | Requirement |
| CMOS sensor | 1/3" or larger |
| Light sensitivity | ≤ 0.01 lx for color image with AGC enabled at 30 IRE signal level; ≤ 0.001 lx for B/W image with AGC enabled at 30 IRE signal level |
| Number of video streams | 2 or more |
| Resolution of the primary stream | 1920×1080 to 2560×1920 pixels |
| Resolution of the secondary stream | From 640×480 (4:3) or 640×360 (16:9) up to 1280×720 pixels |
| Frame rate | 12 to 25 fps |
| Lens focal length | 2.8 mm or greater (lenses with minimal nonlinear distortion are recommended) |
| Bitrate of primary stream | 1024 Kbps to 6 Mbps |
| Bitrate of secondary stream | 512 Kbps to 1 Mbps |
| Video encoding type | CBR (VBR if CBR cannot be configured) |
| Video encoding protocol | H.264 and/or H.265 |
| Audio encoding protocol | G.711ulaw (8-bit, 8 kHz mono), AAC, or PCM (support for at least one protocol) |
| Supported network protocols | TCP/IP, ICMP, HTTP, HTTPS, RTP, RTSP, NTP, SNMP, IGMP, IPv4 and/or IPv4/v6 |
| Video transmission protocol | RTP over TCP |
| ONVIF compatibility (PROFILE S, PROFILE G) | Required for cameras with controllable components |
| Camera configuration interface | Web interface (IE 7.0+, Google Chrome 54.0+, Firefox 49.0+) |
| Security features | User authentication (Web interface); RTSP authentication; IP/MAC filtering |
| Built-in illumination | 30 m or more (recommended: 50 m or more) |
| Power supply | PoE 802.3af or 802.3at (12 V or 24 V allowed if specified in design) |
| Operating temperature range | –30 °C to +40 °C |
| Environmental protection rating | IP66 or higher |