Halo suppression for multi-channel lidar detection systems
By employing an alternating energy level illumination protocol and scanning unit control, the lidar system mitigates the halo effect in highly reflective environments, thereby improving detection accuracy and object recognition precision.
CN121866486APending Publication Date: 2026-04-14YINGNUOWEISI TECH CO LTD
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Patent Information
- Application Number
- CN202480058966.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2024-01-28
- Filing Date
- 2024-07-11
- Publication Date
- 2026-04-14
AI Technical Summary
Technical Problem
LiDAR systems are prone to halo effects in the presence of highly reflective objects, resulting in ghosting, saturation, and halo phenomena in point cloud images, which affect the accuracy of object recognition and detection.
Method used
By employing an alternating energy level illumination protocol and scanning unit control, the field of view is illuminated by laser beams of different energy levels alternately, and combined with halo correction measures, halo artifacts are generated and corrected.
Benefits of technology
It effectively reduces the halo effect, improves the detection accuracy and reliability of the lidar system in environments with highly reflective objects, and ensures the accuracy of object recognition.
✦ Generated by Eureka AI based on patent content.
Abstract
A lidar system and method. Each emitter of the emitter array emits a light beam directed toward the FOV through the scanning unit. In one embodiment, an emission light beam guided according to an alternating energy level illumination protocol enables detection under halo, in which a first light beam emitted by a first emitter and having a first energy level illuminates a first FOV region, and a second light beam emitted by a second emitter and having a second energy level illuminates a second FOV region. And a second light beam emitted by the second emitter and having a second energy level irradiates a second FOV region adjacent to the first FOV region, wherein the first energy level is lower than the second energy level. In another embodiment, an emission light beam guided according to an offset illumination protocol enables detection under halo, where a first light beam emitted by a first emitter in a first plurality of scan lines illuminates the FOV portion at a first time and a second light beam emitted by a second emitter in a second plurality of scan lines at a second time. And a second light beam emitted by the second emitter in the second plurality of scan lines illuminates the FOV portion at a second time after the first time. Each detector of the detector array detects a reflection of the emitted light beam.
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