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Method for detecting and identifying raindrops in video image

A technology of video image and recognition method, which is applied in the field of image processing, and can solve the problems of misidentifying non-rain objects as raindrops, unsatisfactory aspect ratio of raindrops, and inability to overcome defects, etc.

Inactive Publication Date: 2011-11-23
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

The disadvantage is that it is also unable to overcome the defects of the optical model to detect raindrops, and the constraint condition of raindrop aspect ratio is not ideal, and some non-rain objects will be misidentified as raindrops

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  • Method for detecting and identifying raindrops in video image
  • Method for detecting and identifying raindrops in video image
  • Method for detecting and identifying raindrops in video image

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Embodiment Construction

[0044] The present invention will be further described in detail below in conjunction with specific embodiments.

[0045] refer to figure 1 , video image raindrop detection and recognition includes the following steps:

[0046] The first step is to use FastICA algorithm to detect raindrops according to the characteristics of raindrop movement;

[0047] In the second step, in order to obtain the characteristic parameters of raindrop shape, a method based on edge information is used to binarize the detected raindrop image;

[0048] The third step is to identify raindrops according to the statistical features of the area, direction angle and width of the connected regions in the binary image.

[0049] According to the characteristics of raindrop motion, FastICA algorithm is used to detect raindrops. The video image captured by the fixed camera can be understood as the superposition of the background component and the motion component. The background is basically unchanged and...

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Abstract

The invention discloses a method for detecting and identifying raindrops in a video image. The method comprises the following steps of: firstly, detecting the raindrops by a FastICA algorithm according to the characteristic of raindrop motion; secondly, performing image binarization by a marginal information guidance-based process; and finally, identifying the raindrops according to the statisticcharacteristics of areas, direction angles and widths of a communication area in a binary image. The method can realize the detection and identification of the raindrops in the video image, is suitable for scenes of heavy rain, light rain, a dynamic state and a static state, and establishes the foundation for the removal of the raindrops in the video image.

Description

technical field [0001] The invention relates to an image raindrop detection and recognition method in the fields of pattern recognition, computer vision and the like, and belongs to the technical field of image processing. Background technique [0002] Computer vision systems are widely used in the military field. However, the vision system suffers from a critical problem - it is very sensitive to severe weather. Cloudy and rainy weather often reduces atmospheric visibility and the imaging quality of the vision system, which brings huge difficulties to the monitoring, navigation and guidance, target tracking, and identification systems that rely on the vision system. Restoring images in rainy weather is of great significance to the all-weather work of the vision system. Among them, the detection and recognition of raindrops is the key to removing rain from images. [0003] A literature search of the prior art found that there is no invention patent on image raindrop detec...

Claims

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Application Information

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IPC IPC(8): G06K9/00G06K9/38G06T7/20
Inventor 董书莉徐贵力杨小伟王小洪钟志伟徐培智
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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