In fields such as urban security, traffic monitoring, industrial automation, and critical infrastructure protection, image sensors serve as the core "eyes" that enable clear, accurate, and long-range vision.
Faced with complex and variable lighting conditions—ranging from intense outdoor sunlight under a scorching sun to subtle movements in backlit shadows deep at night—traditional image sensors often fall short. Issues such as overexposure, distortion, or loss of details frequently occur, leading to the omission of critical information and the failure to identify potential safety hazards in a timely manner.
Leveraging its profound technical accumulation and in-depth understanding of security scenarios, Dishan Technology has independently developed a security-specific image sensor with ultra-high dynamic range (HDR) performance. It redefines the boundaries of security vision with cutting-edge imaging technology, infusing smart security with the technological essence of "seeing what is truly there". This empowers the "eyes" of security to penetrate the fog of light and shadow, safeguarding every inch of space where visibility is critical to safety.
Breaking the Limits of Light and Shadow: Core Innovations in HDR Technology
Dishan Technology's high dynamic range (HDR) image sensor integrates advanced multi-frame synthesis and pixel-level photon response optimization technologies. Combined with its innovative Dual Gain Architecture and temporal noise suppression algorithm, it delivers a dynamic range performance of over 120 dB. This value far exceeds the dynamic perception range of the human eye, meaning the sensor can clearly capture details in both extremely bright areas (e.g., vehicle headlights, direct sunlight) and extremely dark areas (e.g., shadows, nighttime corners) within a single frame. It effectively resolves the longstanding issue of traditional sensors where "bright regions blow out to white and dark regions turn into pure black".
The core of this breakthrough lies in the innovative design of the Dual Gain Architecture: by integrating both high and low gain modes into the same pixel structure, the sensor can dynamically switch light-sensing intensity in real time. Much like the human eye automatically adjusts pupil size in different lighting conditions, this ensures no details are lost during the analog-to-digital conversion of photon signals. When paired with the temporal noise suppression algorithm, the sensor can accurately separate valid signals from background noise even in low light, outputting clear, noise-free images.
For instance, in nighttime road monitoring, the sensor can clearly capture license plate numbers illuminated by distant vehicle headlights while retaining visible details of the surrounding environment, significantly enhancing the effectiveness and security of surveillance footage.
Furthermore, the sensor supports real-time adaptive exposure adjustment. Its built-in AI algorithm analyzes the scene's brightness distribution in real time and adjusts exposure parameters with millisecond-level response. Whether in the dim light of dusk during day-night transition or on nighttime roads suddenly flooded by vehicle headlights, the sensor dynamically balances frame brightness to ensure highlight areas are not overexposed and dark areas retain texture and detail. This feature is particularly critical at high-traffic transportation hubs: even when exposed to high-beam headlights, license plate numbers and details inside the vehicle cabin remain clearly distinguishable, providing irrefutable evidence for accident reconstruction and illegal activity forensics. In addition, the sensor offers dynamic wide dynamic range adjustment, which can locally optimize exposure areas based on the movement trajectory of monitored targets, achieving the effect of "focus tracking, details preserved".
Built for Security: Reliable Sensing Across All Scenarios
Tailored to the unique requirements of security applications, Dishan Technology’s HDR image sensor was designed from the outset to deliver reliable sensing capabilities for all weather, all time, and all scenarios, establishing itself as a true "security sentinel":
Ultra-Low Illumination Performance: Even in extremely dark environments of 0.01 lux (equivalent to the faint light of moonlight), the sensor can still output clear, usable black-and-white images. Combined with infrared enhancement technology, it can even achieve contour recognition in complete darkness, truly realizing "no blind spots in night vision". For example, in nighttime border patrol scenarios, the sensor can clearly capture suspicious figures crossing restricted areas, building an invisible barrier for border security.
High Light Interference Resistance: Boasting excellent glare suppression capabilities, the sensor leverages the synergy of hardware-level optical filters and software algorithms to effectively eliminate halos and scattering caused by intense light sources such as vehicle headlights and searchlights, ensuring pure and clear surveillance footage. Field tests have shown that even under the direct glare of oncoming high-beam headlights, the sensor can clearly distinguish license plate numbers and driver facial features, significantly improving the success rate of traffic violation capture.
High Frame Rate & Low Latency: Supporting ultra-high frame rate output of up to 120 fps, combined with low-latency image processing technology, the sensor ensures smooth capture of high-speed moving targets (e.g., speeding vehicles, running pedestrians) without motion blur or afterimages. In time-critical scenarios such as highway toll gates and airport runway monitoring, the sensor acts like a "time-space freezer", accurately freezing every critical moment.
Wide Temperature Range Stability: Adopting military-grade materials and packaging processes, the sensor can operate stably in extreme temperatures ranging from -40°C to +85°C, adapting to harsh environments such as severe cold, extreme heat, and high humidity. Whether deployed at frigid outposts in Siberia or sun-scorched oil fields in the Middle East, the sensor remains "composed" and delivers reliable images, reducing equipment failures and maintenance costs caused by environmental factors.
Empowering intelligent analysis to enhance security efficiency
High-definition images are only the starting point; the true value lies in "understanding what is seen". The high-quality images output by Dishan Technology’s HDR sensor have significantly improved the recognition accuracy of backend AI algorithms:
- AI Empowerment Through Details:
Rich image layers and color information have increased the accuracy of face recognition algorithms by 30% in backlit and side-lit environments, while reducing the misrecognition rate of license plate recognition by 50% in scenarios such as rain, fog, or dirt occlusion. For example, in smart community management, the sensor can clearly capture the eye features of individuals wearing dark masks, enabling precise identity verification when paired with AI systems.
The sensor is equipped with a built-in embedded edge computing module, supporting real-time functions such as local contrast enhancement, tone mapping, and intelligent ROI (Region of Interest) encoding. By "slimming down" raw data before transmission, it reduces the computational load on backend systems by 70%, while improving the overall response speed and energy efficiency of the system. This feature is particularly useful in scenarios with limited edge computing nodes, such as smart parks and remote mountain area surveillance.
The sensor supports an AI pre-trigger mechanism. When abnormal behaviors (e.g., loitering, fence climbing) are detected in the frame, it can automatically switch to high-frame-rate mode and link with surrounding cameras and audio-visual alarm devices. This achieves millisecond-level linkage across the entire "perception-recognition-response" chain, elevating security efficiency to new heights.
Green Technology, Responsible Progress
As a technology enterprise committed to social responsibility, Dishan Technology has integrated green concepts into sensor design, allowing the light of technology to illuminate a sustainable future:
Utilizing nanoscale manufacturing processes and intelligent power management technology, the sensor achieves micro-watt level standby power consumption, with operating power consumption reduced by 40% compared to similar products. This can save hundreds of kilowatt-hours of electricity per monitoring point annually. Beyond reducing energy dependence, it also supports the achievement of the "Dual Carbon" goals—carbon peaking and carbon neutrality—a national strategy to address global climate change. By lowering carbon emission intensity, it significantly reduces greenhouse gas emissions, contributing to global environmental protection efforts.
Adopting halogen-free packaging materials and recyclable metal frames, the sensor complies with RoHS and REACH environmental certifications, minimizing electronic pollution at the source. At the end of its product lifecycle, the material recyclability rate reaches as high as 95%, fulfilling the commitment to green manufacturing.
Equipped with anti-sulfidation, anti-corrosion coatings and shock-resistant structural design, the sensor boasts a Mean Time Between Failures (MTBF) of over 100,000 hours. This reduces electronic waste generated by equipment replacement and lowers the environmental cost throughout the entire lifecycle.
- Solar Energy Compatibility:
Tailored for remote areas without access to electricity, the sensor supports low-power solar power supply solutions. It can operate 24/7 uninterruptedly with only a micro photovoltaic panel, providing green monitoring solutions for scenarios such as forest fire prevention and wildlife protection.
Cooperating with the Ecosystem to Co-build a Secure Future
Dishan Technology's HDR security image sensors have been widely applied in multiple fields such as smart cities, safe communities, transportation hubs, and energy & power, emerging as an industry benchmark:
In a smart transportation project of a megacity in the Yangtze River Delta, cameras equipped with Dishan sensors formed a network covering over 300 road intersections. This achieved a traffic violation capture rate of 99.5% and a threefold increase in congestion warning response speed, safeguarding the travel safety of citizens.
- Guardian of Industrial Safety:
At a large-scale petrochemical plant, sensors built a 360° blind-spot-free monitoring network in high-risk chemical storage areas. They real-time capture potential safety hazards such as minor pipeline leaks and abnormal flames, protecting assets worth hundreds of billions of yuan.
Dishan has established in-depth cooperation with leading camera manufacturers including Hikvision and Dahua Technology, providing full-chain support ranging from sensor modules to ISP image processing algorithms. It has also jointly developed integrated "sensor + AI" solutions with AI algorithm companies, driving the integration and innovation of industry technologies.
- Blueprint for Future Technologies:
The company continues to explore cutting-edge technologies such as event cameras, near-infrared enhancement, and AI perception fusion. Its next-generation products will achieve quantum-level imaging accuracy of "what you see is what you get" and integrate multi-spectral sensing capabilities. This will enable the "eyes" of security to not only "see clearly" but also "see thoroughly"
Where Light and Shadow Intertwine, Security Admits No Compromise
In every corner of security surveillance, Dishan Technology’s high dynamic range (HDR) image sensors stand guard with precision at the micro level, safeguarding security without boundaries. Whether capturing the bustling flow of traffic under the scorching sun or the faintest clues in the dead of night, they faithfully restore scenes with true-to-life imagery, providing a reliable basis for critical decision-making.
This is more than a technological breakthrough—it is a reverence for life. Behind every clear frame lies an unwavering commitment to social responsibility and a dedication to technology for good.
Precision in Every Detail, Security Without Boundaries—Dishan Technology will continue to drive innovation as its engine and uphold responsibility as its guiding light. It will empower the "eyes" of security to see farther, clearer, and with greater empathy, contributing the strength of Chinese technology to building a safer and smarter world.
The future is already here. Let us join hands with Dishan Technology to witness the rebirth of security amid light and shadow.
