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森林雾天单幅图像复原的研究 被引量:2
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作者 孙丽萍 卢俊彤 +1 位作者 张怡卓 李超 《计算机仿真》 北大核心 2018年第4期390-394,共5页
针对森林中的雾气使图像模糊不清,图像信息缺失的问题,利用分水岭分割法对森林图像进行分割,对分割以后的图像利用形态学膨胀与腐蚀进行二值操作,提取出天空区域和森林区域。对天空区域使用改进的retinex算法进行处理,改进的retinex算... 针对森林中的雾气使图像模糊不清,图像信息缺失的问题,利用分水岭分割法对森林图像进行分割,对分割以后的图像利用形态学膨胀与腐蚀进行二值操作,提取出天空区域和森林区域。对天空区域使用改进的retinex算法进行处理,改进的retinex算法能够实现光照补偿、颜色恒长、动态范围压缩、增强天空区域的色彩度和对比度;对森林区域结合双边滤波与暗通道优先的算法进行复原,同时进行去噪和边缘保持处理,最后将两个部分图片合并得到清晰的森林图像。实验结果表明,采用改进方法复原森林雾天图片既能提高监测到的图像质量,增加图像细节信息,又能解决暗通道优先在延伸的天空区域存在失真的块效应问题,实验取得理想的去雾效果。 展开更多
关键词 森林图像复原 分水岭分割 暗通道优先
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Historical Changes and Characteristics of Rehabilitation,Management and Utilization of Forest Resources in South Korea
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作者 Eui-gyeong KIM Dong-jun KIM 《Journal of Mountain Science》 SCIE CSCD 2005年第2期164-172,共9页
This study analyzed the causes of forest devastation,the characteristics of forest rehabilitation process,and the success factors of reforestation. And it reviewed the management of rehabilitated forest resources and ... This study analyzed the causes of forest devastation,the characteristics of forest rehabilitation process,and the success factors of reforestation. And it reviewed the management of rehabilitated forest resources and identified the income sources of mountain villages in South Korea. The devastation of forest starting from the early twentieth century was continued to the 1950’s. The main causes of deforestation were the illegal cutting of trees for fuel and the slash-and-burning agriculture in forest. The success factors of reforestation were the decrease in the dependence on forest of fuel source,strict administration system and national participation. Sustainable forest management could be made possible through the practical use of social issues like public work project for prevention of landslide damages caused by the thinned logs left in the forest. Also it could be possible by making people realize that the public benefit was obtained from forest and the income sources of mountain villages were supplemented by non-timber forest products and tourism. Food and Agriculture Organization indicated Korea as the country that forestation was succeeded in a very short period. Korea seems to be not ordinary because economic growth was accomplished with rehabilitating natural environment. Korean forestation can become a good prototype of combining environmental rehabilitation and economic development. 展开更多
关键词 Forestation forest management forest utilization South Korea
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