River channel extraction method and device and computer readable storage medium
An extraction method, a technology of river channels, applied in the field of image processing, can solve problems such as variable flow potential, wide and shallow river channels, inability to accurately extract river channel information, etc., and achieve the effect of accurate extraction
Pending Publication Date: 2022-03-29
PETROCHINA CO LTD
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However, due to the wide, shallow, scattered and changeable flow of the river, the existing river channel extraction methods often cannot accurately extract the river channel information.
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[0048] Unless otherwise defined, all technical terms used in the embodiments of the present application have the same meanings as commonly understood by those skilled in the art. In order to make the technical solutions and advantages of the present application clearer, the implementation manners of the present application will be further described in detail below in conjunction with the accompanying drawings.
[0049] The embodiment of the present application provides a method for extracting river channels, such as figure 1 As shown, the channel extraction method includes:
[0050] Step 101, intercepting the target image including the river area from the original image;
[0051] Step 102, performing binarization processing on the target image to obtain a binary target image;
[0052] Step 103, based on an edge detection algorithm, obtain river edge pixels in the river region in the binary target image;
[0053] Step 104, according to the pixel coordinates of the pixel poin...
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The invention discloses a river channel extraction method and device and a computer readable storage medium, and belongs to the technical field of image processing. The method comprises the following steps: intercepting a target image comprising a river channel region; performing binarization processing on the target image to obtain a binary target image; obtaining riverway edge pixel points of a riverway region in the binary target image; calculating geographic coordinates of riverway edge pixel points; obtaining river channel scatter point data; and generating a two-dimensional river channel model of the river channel region. According to the riverway extraction method provided by the embodiment of the invention, the riverway edge pixel points of the riverway region are firstly obtained based on the edge detection algorithm, then the riverway edge pixel points are smoothed to obtain the riverway scatter data, and then the two-dimensional riverway model is generated according to the riverway scatter data. According to the riverway extraction method provided by the embodiment of the invention, noise reduction processing on the riverway edge is realized by adopting a smoothing processing means, and compared with a traditional riverway extraction method, the riverway information can be extracted more accurately.
Description
technical field [0001] The present application relates to the technical field of image processing, in particular to a method, device and computer-readable storage medium for extracting river channels. Background technique [0002] Image processing refers to the technology of analyzing images using computer and other technologies to achieve the desired results, also known as image processing. Image processing mainly includes image transformation, image coding and compression, image enhancement and restoration, image segmentation, and target extraction. Among them, object extraction is an important aspect of image processing. [0003] Target extraction refers to the operation of separating the target of interest from the background from a single image or a sequence of images, identifying and interpreting meaningful object entities from the image, and extracting different image features. Object extraction directly determines the performance of subsequent image recognition and...
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Inventor邹永胜马剑林刘雪光余东亮蒋毅冯淑路王潇唐愚王庆王爱玲赵雄黄海滨吴东容徐丽
OwnerPETROCHINA CO LTD