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type="text/css"></style> <div id="ct" class="ct2 wp cl"> <div class="mn"> <div class="bm_haa cl"> <div class="bm_h cl"> <a href="http://www.oecr.com/portal.php?mod=rss&catid=62" class="y xi2 rss" target="_blank" title="RSS">订阅</a><h1 class="xs2">文章</h1> </div></div> <div class="kjkjb"> <div class="bm vw" style="margin-bottom:0;"> <div class="h hm"> <div class="zxtoux"><img src="http://www.oecr.com/uc_server/avatar.php?uid=54876&size=small" /></div> <h1 class="ph">海底相机在暗黑环境下看得更远更清晰 </h1> <p class="xg1"> 时间：2016-3-24 16:28<a class="zz" href="home.php?mod=space&uid=54876">作者：update</a> 阅读<em id="_viewnum">(1789)</em> 评论: <a href="http://www.oecr.com/portal.php?mod=comment&id=4234&idtype=aid" title="查看全部评论"><em id="_commentnum">6</em></a></p> <div class="zxfb" ><a href="http://www.oecr.com/portal.php?mod=rss&catid=62" class="y xi2 rss" target="_blank" title="RSS">订阅</a></div> </div> <!--[diy=diysummarytop]--><div id="diysummarytop" class="area"></div><!--[/diy]--> <div class="s"> <div class="ss"><div><span>导读： </span>新的海底相机在7.5m远的距离能生成清晰的图像，这个距离是传统海底相机的三倍。挪威研发人员介绍，新相机还能精确计算物体距离，简化水底作业，如：石油钻机维修、捕鱼业等。</div> </div> <!--[diy=diysummarybottom]--><div id="diysummarybottom" class="area"></div><!--[/diy]--> <div class="d"> <!--[diy=diycontenttop]--><div id="diycontenttop" class="area"></div><!--[/diy]--> <table cellpadding="0" cellspacing="0" class="vwtb"><tr><td id="article_content"><div>新的海底相机在7.5m远的距离能生成清晰的图像，这个距离是传统海底相机的三倍。挪威研发人员介绍，新相机还能精确计算物体距离，简化水底作业，如：石油钻机维修、捕鱼业等。 </div><div><span style="line-height: 1.8em;"><br></span></div><div><span style="line-height: 1.8em;">挪威SINTEF的研发人员正与欧洲其他国家的合作机构一起开发相机的<a href="http://sensor.oecr.com" target="_blank" class="relatedlink">传感</a>器和<a href="http://laser.oecr.com" target="_blank" class="relatedlink">激光</a>系统。新设计的相机使海底污染检测、促进海洋物种管理、进行海底巡查维护等作业变得更容易。海洋研发人员能更容易更准确地回答以下问题：一片水域或海底有多少鱼和其他海洋生物？这些鱼和其他海洋生物的尺寸多大？ </span></div><div><br></div><div>该相机是欧盟UTOFIA (水底飞行时间图像采集，Underwater Time Of Flight Image Acquisition)项目的主要成果，该项目将持续到2018年，预算为570万欧元。该项目被列入欧洲研究计划Horizon 2020。项目的其他参与机构有：Bright Solutions（意大利）、a Fraunhofer research centre (德国)、Odos Imaging (英国)、Subsea Tech (法国)、AZTI (西班牙) and DTU Aqua (丹麦)。 </div><div><br></div><div>科学家们认为，SINTEF已经进行的<a href="http://opticaltest.oecr.com" target="_blank" class="relatedlink">测试</a>表明，项目工作思路是对的。为了验证相机的潜能，研发人员将测试架建在挪威的Oslo峡湾（该水域是浑水）。他们用新样机拍摄目标照片，与标准海底相机拍摄的照片进行对比。 </div><div><br></div><div>对比结果<a href="http://display.oecr.com" target="_blank" class="relatedlink">显示</a>，即使新系统只是样机，其拍摄的图像也比标准系统更清晰。研发人员说，新相机还可以安装在水面舰船的船体上或遥控水下机器人（ROV）上，用于监测海底关键区域。 </div><div style="text-align: center;"><p><a href="data/attachment/portal/201603/24/162957xtqo0lswzwwlnqwe.png" target="_blank"><img src="data/attachment/portal/201603/24/162957xtqo0lswzwwlnqwe.png"></a></p></div><div><br></div><div><br></div><div><b>优化捕鱼业 </b></div><div><br></div><div>在SINTEF的项目经理Jens Thielemann说，新相机能提供更全面更详细的图像，与现役完全不同的全新数据库。比如，该水域有多少小龙虾，尺寸到底多大？监测海洋生物时，不仅能区分物种，清点数量，还能计算尺寸。 </div><div><br></div><div>目前，管理海洋物种时利用声纳和传统摄像机进行数据采集。声纳能远距离检测目标，但不能提供详细信息。传统摄像机能观察到海底生物，但不能确定尺寸和数量。 </div><div><br></div><div>Thielemann补充说，传统相机最大的问题是能见度不好时，拍摄范围会降低，尤其是在悬浮砂和粘土颗粒导致水体混浊的近海。新样机只是现有技术的智能组合，当然接下来的2年研发人员会取得一些重要技术进展，包括飞行时间技术。 </div><div><br></div><div><b>精确<a href="http://opticaltest.oecr.com" target="_blank" class="relatedlink">测量</a> </b></div><div><br></div><div>新相机能计算其观察到的所有物体的距离。图像的景深是彩色编码。这种方法使测量绝对大小和事后自动处理图像变得更容易。Thielemans说：“新图像能提供更好的数据和信息，高质量的视觉成像也更便于与外部各方进行信息交流。比如，发生海底生物死亡事件必须报告给当局，这种情况下有张图片会更好。” </div><div><br></div><div>Thielemann希望新相机样机将成为一种新型商业相机技术的基础，耐用、小巧且使用简单。制成的相机目标体积为5~10升之间。相机的组件由遍布欧洲的多个参与机构开发，SINTEF负责项目管理、组件装配和图像分析。 </div><div><br></div><div>2016年2月在丹麦Copenhagen进行进一步测试。今年夏天制成第一个版本的相机——基于专门定制的组件，将使其比样机更轻便更小巧更强大。</div><div style="text-align: center;"><p><a href="data/attachment/portal/201603/24/163004sc3y3wcbwccjjdhq.jpg" target="_blank"><img src="data/attachment/portal/201603/24/163004sc3y3wcbwccjjdhq.jpg"></a></p><p class="MsoNormal"><span 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