新技术：隐形条形码，能大大提高塑料回收效率
<p><span word="Today">Today</span>, <span word="when">when</span> <span word="you">you</span> <span word="recycle">recycle</span> <span word="a">a</span> <span word="plastic">plastic</span> <span word="container">container</span>, <span word="it">it</span> <span word="goes">goes</span> <span word="to">to</span> <span word="a">a</span> <span word="material">material</span> <span word="recovery">recovery</span> <span word="facility">facility</span>, <span word="where">where</span> <span word="it">it</span> <span word="must">must</span> <span word="be">be</span> <span word="identified">identified</span> <span word="and">and</span> <span word="sorted">sorted</span>.</p><p>现在回收塑料瓶时会送到材料回收设施那里，必须要进行识别和分类。</p><p><span word="Facilities">Facilities</span> <span word="typically">typically</span> <span word="rely">rely</span> <span word="on">on</span> <span word="imprecise">imprecise</span> <span word="older">older</span> <span word="technology">technology</span> <span word="to">to</span> <span word="try">try</span> <span word="to">to</span> <span word="figure">figure</span> <span word="out">out</span> <span word="materials">materials</span> <span word="in">in</span> <span word="a">a</span> <span word="particular">particular</span> <span word="piece">piece</span> <span word="of">of</span> <span word="waste">waste</span>. <span word="Workers">Workers</span> <span word="standing">standing</span> <span word="next">next</span> <span word="to">to</span> <span word="conveyor">conveyor</span> <span word="belts">belts</span> <span word="as">as</span> <span word="packages">packages</span> <span word="whiz">whiz</span> <span word="by">by</span> <span word="can">can</span> <span word="catch">catch</span> <span word="others">others</span>.</p><p>回收设施通常依靠不精确的旧技术试着找出一块废料中的可回收材料。包裹在传送带上飞速而过，工人站在旁边抓住。</p><p><span word="But">But</span> <span word="by">by</span> <span word="embedding">embedding</span> <span word="a">a</span> <span word="microscopic">microscopic</span> <span word="change">change</span> <span word="in">in</span> <span word="a">a</span> <span word="pattern">pattern</span> <span word="of">of</span> <span word="pixels">pixels</span>—<span word="called">called</span> <span word="an">an</span> <span word="invisible">invisible</span> <span word="bar">bar</span> <span word="code">code</span>—<span word="on">on</span> <span word="the">the</span> <span word="label">label</span>, <span word="software">software</span> <span word="can">can</span> <span word="instantly">instantly</span> <span word="identify">identify</span> <span word="the">the</span> <span word="package">package</span> <span word="so">so</span> <span word="it">it</span> <span word="can">can</span> <span word="be">be</span> <span word="sorted">sorted</span> <span word="and">and</span> <span word="recycled">recycled</span> <span word="correctly">correctly</span>.</p><p>但通过对商标的像素模式进行轻微改动，也被称为隐形条码，软件就能立刻识别出这个包裹，准确进行分类回收。</p><p><span word="Several">Several</span> <span word="of">of</span> <span word="the">the</span> <span word="world">world</span>’<span word="s">s</span> <span word="largest">largest</span> <span word="brands">brands</span>, <span word="including">including</span> <span word="PepsiCo">PepsiCo</span>, <span word="Nestle">Nestle</span>, <span word="and">and</span> <span word="P">P</span>&<span word="G">G</span>, <span word="have">have</span> <span word="spent">spent</span> <span word="the">the</span> <span word="last">last</span> <span word="two">two</span> <span word="years">years</span> <span word="collaborating">collaborating</span> <span word="with">with</span> <span word="Digimarc">Digimarc</span>, <span word="the">the</span> <span word="company">company</span> <span word="that">that</span> <span word="developed">developed</span> <span word="the">the</span> <span word="technology">technology</span>.</p><p>在过去两年，百事可乐、雀巢和宝洁等全球大品牌与开发这种技术的<span word="Digimarc">Digimarc</span>公司进行了合作。</p><p><span word="Working">Working</span> <span word="with">with</span> <span word="recyclers">recyclers</span>, <span word="retailers">retailers</span>, <span word="and">and</span> <span word="recycling">recycling</span> <span word="machine">machine</span> <span word="manufacturers">manufacturers</span> <span word="to">to</span> <span word="test">test</span> <span word="the">the</span> <span word="system">system</span>, <span word="the">the</span> <span word="project">project</span> <span word="aims">aims</span> <span word="to">to</span> <span word="target">target</span> <span word="one">one</span> <span word="of">of</span> <span word="the">the</span> <span word="reasons">reasons</span> <span word="that">that</span> <span word="many">many</span> <span word="plastic">plastic</span> <span word="packages">packages</span> <span word="end">end</span> <span word="up">up</span> <span word="in">in</span> <span word="landfills">landfills</span>.</p>
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