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管道内壁全景图像自适应展开算法研究

  

  • 出版日期:2015-12-31 发布日期:2016-01-15

Research of Adaptive Expansion Algorithm on Pipeline Inner-Surface#br# Panoramic Image

  • Online:2015-12-31 Published:2016-01-15

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244

被引次数

1

摘要： 全景环形透镜(panoramic annular lens)是一种特殊的光学成像器件，将其应用在管
道形貌检测领域，恰好能忽略管道径向上的中空图像且能获取整个管道内壁一定范围内的全景
图像。吸收传统展开算法中切向展开的优点，设计一种标定实验，利用边缘提取、Hough 变化、
插值等方法来自适应地调节映射点领域内的权值，达到圆环的自适应径向展开。仿真实验表明，
该算法有效地改善了径向放大率，方便适用于不同管径管道。

关键词: ：全景图像, 径向展开, 自适应, 仿真

Abstract: Panoramic annular lens is a special optical imaging device, which is used in morphology
detection of pipeline. It is capable of ignoring hollow image in the radial direction and getting
panoramic picture of whole pipeline inside wall. This has absorbed advantages of tangential
expansion of traditional unwrapping algorithm, designing a calibration experiment, using edge
extraction, Hough transform, and interpolation principle to improve radial development, and obtaining
adaptive expansion algorithm to different pipe diameter. Simulation experiment showed that this
method is effective to improve radial magnification, and applies to pipes with different diameters.

Key words: panoramic image, radial expansion, adaptive, simulation