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| 基于声学摄像仪的溯河洄游幼香鱼计数 | |
| 引用本文： | 童剑锋,韩军,浅田昭,溝口雅彦.基于声学摄像仪的溯河洄游幼香鱼计数[J].渔业现代化,2009,36(2). |
| 作者姓名： | 童剑锋 韩军 浅田昭 溝口雅彦 |
| 作者单位： | 1. 上海海洋大学海洋科学学院,上海,200090 2. 上海海洋大学海洋科学学院,上海,200090;东京大学生产技术研究所,东京153-8505 3. 东京大学生产技术研究所,东京153-8505 4. 日本NUS,东京108-0022 |
| 摘 要： | 至今主要靠目视计数来掌握香鱼(Plecoglossus altivelis)的资源量,这种方法很耗劳动力且精度低.由华盛顿大学研发的声学摄像仪DIDSON(Dual-frequency IDentification SONar)可在浑浊不清的水中摄取接近光学视频画质的图像.其附带软件虽可对体长为几十厘米的大个体鱼计数,但对于体长6 cm以下的小个体鱼,由于其回波信号弱,计数显得非常困难.本文提供了一种基于DIDSON的溯河洄游幼香鱼计数的新方法.首先从声学图像中消除静止的背景,提取出运动目标并除去噪音像素,然后用卡尔曼滤波器对剩下的目标进行跟踪,根据目标移动的特性把目标分为香鱼和垃圾2大类,在除去向下游移动的垃圾之后,可正确地计算向上游移动香鱼的数量.通过现场实测验证了上述声学计数方法的实用性和高效性. |
| 关 键 词： | 幼香鱼 鱼量计数 渔业资源调查 |
Counting method of upstream juvenile Ayu(Plecoglossus altivelis) by acoustic camera |
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| TONG Jian-Feng,HAN Jun,ASADA Akira,MIZOKUCHI Masahiko.Counting method of upstream juvenile Ayu(Plecoglossus altivelis) by acoustic camera[J].Fishery Modernization,2009,36(2). | |
| Authors: | TONG Jian-Feng HAN Jun ASADA Akira MIZOKUCHI Masahiko |
| Institution: | 1 College of Marine Sciences;Shanghai Ocean University;Shanghai 200090;China;2 Institute of Industrial Science;University of Tokyo;Tokyo 153-8505;Japan;3 Japan NUS Co.;Ltd;Tokyo 108-0022;Japan |
| Abstract: | In order to comprehend the abundance of ayu,direct visual counting has been mainly used so far which is not only labor-intensive,but also its counting accuracy is poor.Recently,an acoustic camera called DIDSON(Dual-frequency IDentification SONar),which is invented by Washington University,can provide almost-video-quality images to identify objects even in turbid water.Its software's fish counting function is useful for counting big fishes which are several dozen centimeters large.As for the small fishes who... |
| Keywords: | DIDSON |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |