The Merlin-291CRS is a 2MP HDR USB 2.0 Camera developed around the Sony Starvis IMX291 image sensor. Designed for low-light embedded vision applications, the camera supports robotics vision, industrial inspection, traffic monitoring, smart security, kiosk systems, and video surveillance deployments. The compact S-Mount camera module combines dual endpoint H.264/MJPEG streaming, HDR imaging, starlight sensitivity, and UVC plug-and-play compatibility across Windows, Linux, Android, and macOS platforms.
FORT WORTH, TX / ACCESS Newswire / May 19, 2026 / Vadzo Imaging, a provider of embedded vision solutions, today launched the Merlin‑291CRS, a 2MP HDR USB 2.0 camera that integrates the Sony Starvis IMX291 low‑light HDR sensor with a USB 2.0 UVC interface. The Merlin‑291CRS operates as a dual endpoint USB camera, delivering two simultaneous video streams – a primary high‑resolution H.264 stream and a secondary MJPEG or lower‑resolution stream – over a single USB connection. Vadzo built this dual stream USB camera to meet the needs of robotics vision, industrial inspection, traffic monitoring, smart security, and video surveillance where low‑light performance and multi‑stream flexibility are critical.
Sensor and Camera Overview
The Merlin‑291CRS uses the Sony Starvis IMX291 CMOS sensor, a 2MP (1920 x 1080) back‑illuminated rolling shutter imager with on‑chip High Dynamic Range, a 1/2.8‑inch optical format, and 2.9 µm pixels. The Starvis technology delivers exceptional low‑light sensitivity – down to 0.0005 lux – while the HDR mode preserves detail in high‑contrast scenes. For traffic monitoring camera applications that require license plate capture at dusk, or smart security camera deployments in dim parking lots, this sensor eliminates the need for external IR illumination.
The Merlin‑291CRS integrates a USB 2.0 UVC controller supporting H.264 and MJPEG hardware compression. As an H.264 USB camera, it reduces bandwidth and CPU load on the host – ideal for edge AI devices and embedded systems. As an MJPEG USB camera, it provides frame‑by‑frame encoding for latency‑sensitive applications. The camera enumerates as a standard UVC device on Windows, Linux, Android, and macOS, requiring no proprietary drivers. Power is supplied over USB (5V). The default S‑mount (M12) lens is factory calibrated for typical working distances of 0.5 m to 5 m, with optional custom focus.
Key specs: 2MP (1920 x 1080) | Sony Starvis IMX291 1/2.8 inch | 2.9 µm pixel | Color HDR | Starlight sensitivity | USB 2.0 UVC | H.264 / MJPEG | S‑mount M12
Key Capabilities of the Sony Starvis 2MP HDR USB Camera
Dual Endpoint Streaming – Two Independent Video Flows: Most USB cameras provide only a single video stream. The Merlin‑291CRS is a true dual endpoint USB camera. One endpoint streams H.264 at full 1080p30 for recording or remote viewing; the second endpoint simultaneously streams MJPEG at 720p or VGA for local analytics or preview. This 2MP dual stream USB camera allows developers to run AI inference on the lower‑resolution stream while archiving high‑quality footage – all from one physical camera and one USB cable.
Starlight Sensitivity Without Noise: Standard USB cameras produce grainy, unusable video in moonlight or shaded indoor scenes. The Sony Starvis IMX291 back‑illuminated pixel structure captures twice the light of conventional sensors. This IMX291 Sony Starvis USB camera sees clearly at 0.0005 lux, making it the preferred choice for video surveillance camera systems that must identify faces or license plates at night without adding visible floodlights.
H.264 Hardware Compression Reduces Host Load: Many 2MP USB cameras output raw YUV or uncompressed MJPEG, overloading low‑power processors. The Merlin‑291CRS functions as a H.264 USB camera with onboard hardware encoding. A Raspberry Pi or ARM Cortex‑A can receive compressed H.264 directly over USB and forward it to a network without transcoding. Alternatively, switching to MJPEG mode provides each frame as a standalone JPEG for machine vision pipelines that need frame‑accurate triggering.
S‑Mount Lens Flexibility with Factory Focus: The Merlin‑291CRS ships with a factory‑focused S‑mount (M12) lens calibrated for general‑purpose working distances. Because it is an S‑mount camera, integrators can swap the lens for wide‑angle, narrow‑angle, or macros. For OEM customers, Vadzo offers custom lens pre‑mounting and factory focus calibration at no additional engineering charge.
1080p / 720p / VGA Output Modes: A single 1080p USB camera can be reconfigured to a 720p USB camera or VGA USB camera via simple UVC controls. Downscaling preserves field of view while reducing bandwidth – critical for USB 2.0’s 480 Mbps limit when running dual endpoints. The camera automatically adjusts compression parameters to maintain low latency.
UVC Plug‑and‑Play – No Driver Hunting: Engineers waste hours finding and signing drivers for proprietary USB cameras. The Merlin‑291CRS is a native USB 2.0 UVC camera – connect it to any operating system, and it appears as a standard video device. Linux V4L2, Windows DirectShow, macOS CoreVideo, and Android Camera2 all work immediately. Sample code for OpenCV, GStreamer, and ROS2 is provided.
“System integrators repeatedly tell us: ‘Give us a 2MP HDR USB 2.0 camera that works at night, doesn’t consume our host CPU, and streams two resolutions at once.’ The Merlin‑291CRS answers all three. The Sony Starvis IMX291 handles starlight conditions, hardware H.264 compression offloads the host, and dual endpoint streaming enables simultaneous recording and analytics. Vadzo designed this camera to be the drop‑in replacement for outdated USB webcam modules in industrial and security applications.” – Alwin Vincent, Product Manager at Vadzo Imaging.
Applications
Robotics and AGV Camera – Autonomous mobile robots and AGVs operating in dim warehouses, twilight loading docks, and mixed-light factory floors need a camera that sees clearly without external IR illumination and delivers two independent video streams for simultaneous perception and teleoperation. The Merlin-291CRS Starlight sensitivity at 0.0005 lux eliminates blind spots in low-ambient environments without adding IR flood lighting to the robot payload. Dual endpoint streaming delivers one stream for obstacle detection and a simultaneous second stream for teleoperation or fleet monitoring over a single USB cable. H.264 hardware compression offloads the host processor, leaving the onboard compute budget for navigation and inference rather than video encoding. UVC plug-and-play enumerates the camera driver-free on Linux, ROS2, and Android embedded platforms from first connection.
Industrial Inspection – Conveyor and surface inspection deployments face simultaneous glare from reflective metal or glass surfaces and shadow loss in recessed features, a dynamic range problem that standard industrial USB cameras cannot resolve in a single exposure. The Merlin-291CRS HDR mode preserves surface detail across shiny and matte areas simultaneously, eliminating the glare washout that defeats defect detection algorithms. The S-mount lens holder accepts macro optics for close working distances without a camera change. H.264 hardware compression reduces the bandwidth load on industrial edge computers running parallel inspection pipelines. Dual endpoint streaming sends a full-resolution archive stream and a simultaneous lower-resolution stream to the quality analytics engine from one USB connection.
Traffic Monitoring Camera – License plate recognition at night, in tunnels, and under headlight glare requires a camera that captures clean detail at the illuminance levels where standard sensors produce unusable noise. The Merlin-291CRS Sony Starvis IMX291 sensor captures readable plate detail at 0.0005 lux. HDR handles the simultaneous highlight clipping from headlights and shadow loss on plate surfaces that defeats single-exposure sensors. H.264 hardware compression reduces backhaul bandwidth from roadside camera nodes where uplink capacity is constrained. UVC compliance connects directly to edge gateway and NVR platforms without proprietary driver installation.
Smart Security and Surveillance Camera – Security deployments at parking lots, perimeter fences, retail interiors, and temporary event sites need low-light performance without infrastructure lighting, flexible stream delivery for simultaneous cloud upload and local storage, and driver-free integration with gateway and NVR hardware. The Merlin-291CRS 0.0005 lux Starlight sensitivity identifies faces and vehicles in moonlight-level ambient light without visible or IR floodlights. Dual endpoint streaming delivers a primary 1080p H.264 stream for cloud recording and a simultaneous secondary stream for local NVR storage or on-device analytics. UVC plug-and-play enumerates on any NVR, gateway, or edge compute platform without driver installation across Windows, Linux, and Android.
Kiosk & Interactive Display – Face recognition and presence detection kiosks face backlit lobbies, mixed indoor-outdoor light at building entrances, and the need to run two simultaneous inference pipelines, a recognition engine and a presence or liveness detection model, from a single camera unit. The Merlin-291CRS HDR maintains accurate facial detail against bright window backgrounds and high-contrast lobby lighting that causes standard kiosk cameras to silhouette the subject. Dual endpoint streaming feeds the 1080p stream to the recognition engine and the VGA stream to the presence or liveness detection pipeline simultaneously from one physical camera. Starlight sensitivity handles the low-light conditions of evening and underground entrance deployments without supplemental lighting. UVC plug-and-play integrates driver-free with kiosk compute platforms running Windows, Linux, or Android.
Frequently Asked Questions
What is the best low-light USB camera with HDR for license plate recognition and night surveillance without IR illumination?
Night surveillance and license plate recognition deployments that cannot install visible or IR floodlighting need a camera sensor with sufficient native sensitivity to capture clean detail at ambient light levels. The Merlin-291CRS Sony Starvis IMX291 sensor delivers usable color video at 0.0005 lux. HDR handles simultaneous headlight glare and shadow loss on plate surfaces in a single exposure. H.264 hardware compression reduces backhaul bandwidth from roadside and perimeter nodes where uplink capacity is limited. UVC compliance connects directly to NVR and gateway platforms driver-free on Windows, Linux, and Android.
Which USB 2.0 camera supports dual stream output for simultaneous AI inference and HD recording?
Edge AI deployments that need to run inference and archive high-resolution footage simultaneously from a single camera typically require either two physical cameras or a host processor powerful enough to transcode a single stream into two formats, both adding cost, complexity, or compute load. The Merlin-291CRS dual endpoint architecture delivers two independent video streams over a single USB 2.0 connection: a primary 1080p H.264 stream for recording or remote viewing and a simultaneous secondary MJPEG stream at 720p or VGA for local inference or analytics. Both streams run concurrently without host transcoding, leaving the edge compute budget for the inference pipeline rather than video processing.
What is the best H.264 hardware compression USB camera for Raspberry Pi and ARM embedded platforms?
Raspberry Pi, ARM Cortex-A, and low-power edge AI platforms lack the CPU headroom to transcode raw YUV or uncompressed MJPEG video from a 2MP USB camera in real time while simultaneously running inference or control workloads. A USB camera with onboard H.264 hardware encoding offloads video compression entirely, delivering a ready-to-forward compressed stream over USB without consuming host CPU cycles. The Merlin-291CRS H.264 USB camera encodes 1080p30 onboard at 10-20 Mbps, allowing a Raspberry Pi or equivalent platform to receive, forward, and store compressed video without transcoding. The secondary MJPEG endpoint provides frame-accurate standalone JPEG output for machine vision pipelines that require per-frame triggering alongside the H.264 stream.
Which 2MP HDR USB camera works driver-free on Linux, Windows, Android, and ROS2 for robotics and industrial applications?
Robotics and industrial deployments on Linux, ROS2, and Android embedded platforms lose significant integration time to proprietary USB camera drivers. A UVC compliant USB camera enumerates as a standard video device on every host OS without driver installation, reducing integration from days to hours. The Merlin-291CRS is a native USB 2.0 UVC camera that works immediately on Windows, Linux V4L2, macOS, ChromeOS, Android Camera2, and any RTOS with UVC support. Vadzo provides ROS2 camera node, OpenCV, and GStreamer sample code out of the box. HDR handles the high-contrast mixed lighting of factory floors and warehouse environments, and Starlight sensitivity covers low-ambient robotics deployments without IR illumination.
What is the best dual stream USB HDR camera for kiosk face recognition and access control under mixed lighting?
Access control kiosks and face recognition terminals face backlit lobbies, mixed indoor-outdoor lighting at building entrances, and the need to run two simultaneous pipelines – a high-resolution recognition stream and a lower-resolution presence or liveness detection stream – from a single installed camera. Standard kiosk cameras silhouette subjects against bright lobby windows and require two separate USB cameras or a powerful host processor to split streams. The Merlin-291CRS HDR maintains accurate facial detail against high-contrast backgrounds that defeat single-exposure sensors. Dual endpoint streaming feeds the 1080p stream to the recognition engine and the VGA stream to the presence detection pipeline simultaneously from one USB cable. Starlight sensitivity covers evening and underground entrance conditions without supplemental lighting.
Availability
The Merlin‑291CRS 2MP HDR USB 2.0 camera built on the Sony Starvis IMX291 sensor is available now for evaluation and volume orders. Each evaluation kit includes the camera module with factory‑fitted S‑mount lens, a USB 2.0 cable, and a quick‑start guide with links to software examples. Contact Vadzo at [email protected] to request an evaluation unit or discuss OEM customization.
About Vadzo Imaging
Vadzo Imaging is a global provider of embedded vision solutions, delivering high‑performance camera modules and imaging platforms for robotics, industrial automation, UAVs, edge AI, medical systems, and smart infrastructure. Vadzo designs products for easy integration with leading embedded platforms, offering hardware customization, firmware development, and driver support. From global shutters to rolling shutters, USB to Wi‑Fi, Vadzo helps customers build and deploy vision systems faster.
Media Contact
Alwin Vincent
Vadzo Imaging
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