Why Autofocus-Zoom Works For Subsea Imaging
- Apr 30
- 2 min read
High-quality visual data has become central to subsea operations, supporting everything from structural inspection to precision intervention tasks.
As offshore assets age and regulatory requirements tighten, operators increasingly depend on detailed imaging to assess integrity, detect anomalies, and guide decision-making. In parallel, the growth of offshore renewables is driving demand for more capable imaging systems that can operate reliably in complex, low-visibility underwater environments.
The Role of Autofocus-Zoom Cameras Cameras are often the primary sensor for ROVs. Pilots rely on real-time video feeds for situational awareness and control; manipulating robotic arms depends on clear visuals for accurate positioning and interaction.
Autofocus-zoom cameras are ideal for underwater inspection tasks as they automatically maintain sharp focus across varying distances and optical zoom enabling detailed visual assessment. Operators can quickly transition between wide fields of view and close-up inspection without repositioning the ROV. This improves operational efficiency while ensuring consistent, high-quality imaging in dynamic subsea settings.
Global Shutter vs. Rolling Shutter Global shutter sensors capture all pixels simultaneously, making them particularly well suited to subsea ROV operations where both the vehicle and environment are in motion. This helps eliminate motion artefacts that are common with rolling shutter systems, resulting in more accurate, distortion-free images.
Output Interfaces and IntegrationVideo output interfaces ensure compatibility with ROV architectures and topside systems. SDI remains a popular choice for subsea applications due to its robustness, low latency, and ability to transmit over long distances. HDMI is useful for high-quality imaging although it is more expensive and shorter range.
USB supports straightforward integration with local embedded processing units. IP enables flexible, networked systems, allowing video streams to be easily distributed, recorded, and analysed across multiple platforms.
Low-Light PerformanceLow-light performance is a key requirement for underwater imaging, where light attenuation increases rapidly with depth and turbidity. Cameras with high-sensitivity sensors, larger pixel sizes, and low noise characteristics are better equipped to produce usable images in these conditions.
A Camera for Every Underwater ApplicationBecause ROVs are used in so many different situations, their imaging needs can vary widely. Active Silicon offers advanced, highly reliable imaging products to meet all these demands.
The Harrier Autofocus-Zoom range encompasses very compact models with zoom capability from 10x up to 55x, global shutter cameras, and up to 4K video transmission. Multiple video outputs can be achieved with Harrier interface technology, which includes conversion boards for IP, HDMI, USB and SDI, as well as HD-VLC for long-range transmission. The cameras can be controlled remotely using industry-standard protocols such as VISCA, Pelco-D, UVC and ONVIF profile S.
Each of the Harrier cameras incorporate advanced camera features beneficial for underwater imaging, including Real-time True Wide Dynamic Range (WDR), Day & Night mode, Infrared Cut filter Removal (ICR), Digital Noise Reduction (2D + 3D DNR) and Digital Image Stabilization.
View the range available online or contact the Active Silicon team for more detailed information.
+44 (0)1753 650600
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