High-dynamic laser light strip adaptive imaging processing method in outdoor complex environment
A complex environment, imaging processing technology, applied in image data processing, image enhancement, image analysis and other directions, can solve problems such as high-speed detection of light strips, high precision, affecting system measurement accuracy, and difficulty in laser image extraction. Improve accuracy and measurement accuracy, achieve processing efficiency and strong robustness
Active Publication Date: 2021-12-24
江苏集萃智能光电系统研究所有限公司
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Problems solved by technology
[0003] However, there is no technology for high-speed detection and high-precision extraction of light stripes in the measurement of structured light vision sensors in complex on-site environments.
[0004] Existing laser vision sensors are mostly used indoors, and the light and image background are ideal. When used in complex outdoor environments, laser imaging is prone to high dynamic characteristics due to factors such as complex light, variable image background, and strong reflections. , that is, the difference between light and dark becomes larger, which makes it difficult to extract laser images, and the extraction accuracy decreases or cannot be extracted, which seriously affects the measurement accuracy of the system
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Embodiment 1
[0098] Such as Figure 1-4 As shown, a high dynamic laser light strip adaptive imaging processing method in an outdoor complex environment includes the following steps:
[0099] Step 1: Outdoor laser image acquisition
[0100] Outdoor laser image acquisition based on the sun-blind anti-jamming laser vision sensing module, the sun-blind anti-jamming laser vision sensing module includes:
[0101] Sun-blind anti-outdoor stray light interference type laser vision sensor, including a high-speed camera and a laser emitting laser, the high-speed camera is used to capture the laser emitted by the laser;
[0102] ARM processing chip;
[0103] Correction module;
[0104] The high-speed camera of the sun-blind anti-outdoor stray light interference type laser vision sensor is connected to the input end of the ARM processing chip through the FPGA parallel data acquisition module, and the output end of the ARM processing chip is connected to the input end of the correction module. The su...
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The invention discloses a high-dynamic laser light strip adaptive imaging processing method in an outdoor complex environment. The method comprises the following steps: 1, carrying out outdoor laser image acquisition; 2, quickly positioning a laser light strip area; 3, evaluating the quality of the laser light strip image; 4, enhancing the brightness of the low-quality laser strip image; 5, carrying out high-precision extraction of midline points in the light strip image; and 6, carrying out multi-thread parallel acceleration processing. According to the method, identification, quality evaluation and brightness enhancement are carried out on the laser image, a parallel multi-thread flow calculation mode is adopted, the light strip image processing efficiency is improved, accurate extraction of the laser light strip image under the outdoor high-speed measurement condition is ensured, the identification accuracy of the outdoor high-dynamic laser light strip image is greatly improved, and high-precision positioning is realized, and the method has important practical significance.
Description
technical field [0001] The invention belongs to the technical field of rail transit safety detection, and in particular relates to a high-dynamic laser light strip self-adaptive imaging processing method in an outdoor complex environment. Background technique [0002] In complex outdoor environments, high-speed, high-dynamic, and high-precision visual measurement has increasingly become an urgently needed measurement method for industrial sites, visual perception, augmented reality, and cutting-edge weapon testing. Among them, online measuring instruments represented by structured light vision sensors are being widely used, for example, visual measurement systems in harsh environments such as online measurement of geometric parameters of train wheelsets, shape restoration of large forgings, and monitoring of train pantograph-catenary operation status. The imaging characteristics of all these systems are mainly reflected in the sharp change of brightness, which can be called ...
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IPC IPC(8): G01B11/25G06T5/00G06T7/00G06T7/13
CPCG01B11/25G06T7/0002G06T7/13G06T2207/10016G06T2207/20104G06T2207/20081G06T2207/30168G06T2207/20004G06T5/70
Inventor 黄磊李苏祺李鑫夏彪刘浩
Owner 江苏集萃智能光电系统研究所有限公司