A Method of Urban Environmental Assessment Based on Street View
A technology of urban environment and street view image, applied in the field of computer vision, can solve the problem of less research on greening recognition, and achieve the effect of low cost, low cost and objective evaluation of urban environment
Active Publication Date: 2020-04-10
FUZHOU UNIV
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In addition, there are relatively few studies on green recognition
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[0019] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments.
[0020] The invention provides an urban environment assessment method, and proposes an urban environment assessment method based on a street view image to solve the problem that a large amount of hardware is required in the traditional urban environment assessment and the assessment cost is too high. Such as figure 1 As shown, this method first performs road search through city names and road names, and obtains the coordinates along the roads, so as to download the street view map. After obtaining the street view image sequence, extract the SURF feature points of the street view image for registration, and use the weighted average fusion method to stitch the street view image. Then, the blue sky detection is carried out on the spliced street view image, and the undetermined blue sky area is detected by threshold segmentation first, and then t...
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The present invention provides an urban environment assessment method based on street view images: first, the street view images are obtained through road retrieval, and registration is performed to realize street view splicing; a method is used to determine whether the image is foggy by comparing the dark channel and the mean grayscale image; and The haze image is dehazed based on the dark primary color prior algorithm, and the dehazing effect is optimized using guided filtering. By setting the color channel thresholds in different color spaces, 2BGR and 2GBR images for blue sky detection and greening detection are proposed. Segmentation method, secondary screening of detection results by analyzing connected areas; finally, respective evaluation functions are given for contrast, greening rate and blue sky rate, and an evaluation scheme that integrates contrast, greening rate and blue sky rate is proposed. The effectiveness of the proposed scheme has been verified through experiments conducted in multiple cities. The scheme has the advantages of flexibility, speed and low cost, and can achieve the purpose of objectively assessing the urban environment.
Description
technical field [0001] The invention relates to the field of computer vision, and applies it to the creation of smart ecological cities, in particular, an urban environment assessment method based on street view images. Background technique [0002] With the continuous advancement of urbanization, urban environmental problems have become increasingly prominent, and the construction of smart ecological cities has attracted more and more attention. With the development of the computer industry, the connotation of smart cities is becoming more and more abundant. As one of the indispensable technical fields, computer vision is gradually playing an important role in medical care, security, transportation and other directions. And with the requirement of building a smart ecological city, the application of computer vision in the field of ecological and environmental protection should also become one of the research focuses. [0003] In recent years, image stitching technology has...
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IPC IPC(8): G06T3/40G06T5/00G06T7/11G06T7/187G06T7/33G06T7/90
CPCG06T3/4007G06T3/4038G06T7/11G06T7/187G06T7/33G06T7/90G06T2207/20024G06T2207/10024G06T5/73
Inventor 柯逍黄新恩
Owner FUZHOU UNIV