When an ROV dives into the dim, turbid underwater world, its line of sight is the lifeline of operations. In deep water, light rapidly fades; suspended sediments obscure visibility; and high‑risk targets remain out of close‑range reach for inspection—numerous optical challenges have long constrained the operational effectiveness of underwater robots.  Kaimorui hased industrial machine‑vision hardware R&D, focusing on the development and integration of all‑in‑one camera modules and encoder control boards, delivering a domestically produced, end‑to‑end vision solution for marine pipeline inspection, underwater dam monitoring, and subsea scientific research and exploration. Our products combine industrial‑grade reliability with exceptional cost‑effectiveness, and our complete systems have been showcased at numerous optoelectronics expos, demonstrating the practical capabilities of domestic vision hardware in the field of unmanned underwater vehicles. The CM8236KB starlight‑sensitive imaging module, paired with the CM2001H control board, transforms into the ROV’s “underwater keen eye,” enabling long‑range, high‑definition perception even in low‑light and turbid conditions.

I.Ultra-long zoom lets the ROV discern even the tiniest details underwater from a distance.

Underwater operations are fraught with unknown risks: submarine pipelines, cracks in dam structures, and undercurrents swirling around underwater structures all pose challenges. ROVs cannot approach their targets recklessly, making long-range observation capabilities especially critical. The CM8236KB is equipped with a 36x optical zoom lens, with a focal length of 6…-216mm, paired with 32x digital zoom, it balances wide-area cruising with close-up inspection at fixed points. In wide-angle mode, it enables the ROV to rapidly scan large areas and quickly lock onto suspicious targets; switch to telephoto mode, and without needing to approach hazardous structures, you can identify subtle defects such as weld imperfections and corrosion‑induced spalling from a safe distance. It delivers 1080p video at 60 fps, capturing every detail without frame loss. The entire unit is lightweight and compact, measuring 55.6 × 64 × 124 mm and weighing just 400 g, ensuring minimal encumbrance to the ROV’s valuable pressure‑rated payload while meeting the requirements for underwater deployment.

II.Starlight-level low-light performance, breaking free from the visual constraints of pitch‑black underwater environments.

The deeper you descend underwater, the more dramatically natural light diminishes; even with auxiliary lighting turned on, deep-water areas and enclosed tunnels remain dimly lit. Conventional imaging equipment is prone to severe noise and blurred images, making effective operations impossible. The CM8236KB employs an IMX385 starlight‑grade image sensor, delivering a minimum color sensitivity of 0.01 lux and 0.002 lux in monochrome mode, dropping as low as 0.0002 lux when DSS slow‑shutter is enabled. Leveraging ICR day/night switching, 3D digital noise reduction, and wide dynamic range, it both suppresses highlight overexposure caused by direct illumination from auxiliary lights and reduces image noise in low‑light conditions, balancing contrast between bright and dark areas. Even in the pitch‑black depths where no sunlight penetrates, the ROV can capture usable, clear imagery, ensuring that underwater surveys can proceed continuously without being constrained by lighting conditions.

III.Fog-penetrating image enhancement, breaking through the visual barrier caused by suspended particles in turbid water.

In reservoirs, nearshore waters, and inland rivers, suspended sediments and particulate matter scatter light, causing the image to appear as if veiled in a white haze. This blurs object outlines, making it difficult for operators to assess the true condition of underwater structures. The CM8236KB features built-in defogging image processing, with algorithms optimized for water’s scattering characteristics, effectively mitigating the hazing effect caused by suspended particles and restoring object contours and surface textures. It also includes practical functions such as dynamic detection and highlight restoration, ensuring image readability even when the platform experiences minor vibrations from ocean currents. The camera module is compatible with SONY.-VISCA, Pelco-D/P mainstream industrial protocols, LVDS, EX-SDI and CVBS multi‑interface output delivers pristine, raw video, providing the backend control board with a high‑quality image data source.

IV.M2001H control board: the central hub for signal and control of ROV vision systems.

No matter how advanced the image‑capture module, it still requires a stable control and signal‑conversion unit to unleash its full potential—and the CM2001H serves as the central hub of the entire vision system. This ultra‑thin 50×50×5 mm control board features a six‑layer, gold‑plated military‑grade PCB, built with premium materials yet remarkably lightweight and compact, making it ideally suited for the tight installation space inside an ROV’s cabin. Standard mounting holes ensure quick integration. It connects directly to the CM8236KB image‑capture module via LVDS, automatically recognizing and configuring the camera’s output without requiring complex setup. It also supports RS485 and RS232 interfaces.-TTL and IO buttons enable multi‑path control, with VISCA protocol compatibility for remote operation of the lens’s zoom, focus, and various image parameters, seamlessly integrating with the ROV’s master control system. A power‑off memory function ensures that operating settings are automatically restored upon reboot, eliminating the need for repeated underwater adjustments. Multi‑format video output fully supports image acquisition.EncodingEnd-to-end data transmission. The solution supports OEM/ODM customization, helping underwater equipment manufacturers accelerate product iteration with high cost-effectiveness.

The era of unmanned underwater operations has arrived, and ROVs are increasingly taking on high‑risk subsea tasks. Visual perception is their eyes; the Kaimorui CM8236KB plus CM2001H combination integrates ultra‑long‑range zoom, starlight low‑light performance, turbid‑water imaging through haze, and stable control, rising to meet complex underwater optical challenges and delivering a reliable, domestically produced visual solution for pipeline inspection, civil‑engineering surveys, and marine scientific research.