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$(this).css({"color":"#1479d7","border-bottom-color":"#1479d7"}); }); }); </script>  <div class="cpjj"> <h1><span><p><span><strong></strong></span></p></span></h1><h2><p><span>Imatest 随机图案 (噪点) 测试占�/span></p><p><span>Imatest Random Pattern chart(随机图案测试�?也是用来测试纹理锐度的Dead Leave测试卡的另一版本。Random Pattern 是专门用来减少噪声的：处理极小化锐度时采用极大化减少噪声方法，来提高检测的精确度和稳定性。另外，灰色地带往测试卡左右两边能够促进去噪效果（采用一种技术将灰斑噪声的PSD(功率谱密�?从中心Spill coins区域的信号噪声PSD中除</span><span>去）、�/span></p></h2><h1></p><p></h1> </div>  <div class="cxd"> <div class="cxd_tit"><span></span>创新炸�/div> <p style=" color: #333; font-size: 14px; margin: 10px 0 0; line-height: 26px;"> 暂无数据� </p> </div>  <div class="xgfa"> <div class="xgfa_tit"> <div> <span></span>相关方案 </div> </div> <div class="xgfa_box" style="display: block;"><div style="padding:10px;">暂无相关方案、�/div> </div> </div> <script> $(function(){ // 切换 $(".xgfa_tit_ul li").hover(function(){ $(".xgfa_tit_ul li").css({"color":"#4F5862","border-bottom-color":"transparent"}); $(this).css({"color":"#1479d7","border-bottom-color":"#1479d7"}); 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