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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <HTML xmlns="http://www.w3.org/1999/xhtml">  <HEAD><META http-equiv="Content-Type" content="text/html; charset=UTF-8"> <TITLE>BIMEF</TITLE> <LINK href="./main.css" rel="stylesheet" type="text/css">  </HEAD> <BODY>  <a href="https://github.com/baidut/BIMEF" class="github-corner" aria-label="View source on Github"><svg width="80" height="80" viewBox="0 0 250 250" style="fill:#fff; color:#151513; position: absolute; top: 0; border: 0; right: 0;" aria-hidden="true"><path d="M0,0 L115,115 L130,115 L142,142 L250,250 L250,0 Z"></path><path d="M128.3,109.0 C113.8,99.7 119.0,89.6 119.0,89.6 C122.0,82.7 120.5,78.6 120.5,78.6 C119.2,72.0 123.4,76.3 123.4,76.3 C127.3,80.9 125.5,87.3 125.5,87.3 C122.9,97.6 130.6,101.9 134.4,103.2" fill="currentColor" style="transform-origin: 130px 106px;" class="octo-arm"></path><path d="M115.0,115.0 C114.9,115.1 118.7,116.5 119.8,115.4 L133.7,101.6 C136.9,99.2 139.9,98.4 142.2,98.6 C133.8,88.0 127.5,74.4 143.8,58.0 C148.5,53.4 154.0,51.2 159.7,51.0 C160.3,49.4 163.2,43.6 171.4,40.1 C171.4,40.1 176.1,42.5 178.8,56.2 C183.1,58.6 187.2,61.8 190.9,65.4 C194.5,69.0 197.7,73.2 200.1,77.6 C213.8,80.2 216.3,84.9 216.3,84.9 C212.7,93.1 206.9,96.0 205.4,96.6 C205.1,102.4 203.0,107.8 198.3,112.5 C181.9,128.9 168.3,122.5 157.7,114.1 C157.9,116.9 156.7,120.9 152.7,124.9 L141.0,136.5 C139.8,137.7 141.6,141.9 141.8,141.8 Z" fill="currentColor" class="octo-body"></path></svg></a><style>.github-corner:hover .octo-arm{animation:octocat-wave 560ms ease-in-out}@keyframes octocat-wave{0%,100%{transform:rotate(0)}20%,60%{transform:rotate(-25deg)}40%,80%{transform:rotate(10deg)}}@media (max-width:500px){.github-corner:hover .octo-arm{animation:none}.github-corner .octo-arm{animation:octocat-wave 560ms ease-in-out}}</style>  <DIV id="bodyframe">  <DIV id="projectbody"> <BR>  <TABLE width="950" border="0"> <TBODY> <TR> <TD colspan="3"><DIV align="center"><STRONG>Submitted to IEEE Transactions on Cybernetics</STRONG></DIV></TD> </TR> <TR> <TD colspan="3"> </TD> </TR> <TR> <TD colspan="3"><DIV align="center" class="xlarge">A Bio-Inspired Multi-Exposure Fusion Framework for Low-light Image Enhancement</DIV></TD> </TR> </TBODY> </TABLE> <br>   <div align = "center"> <div class="authorname" style="font-size:large;line-adjust:0">Zhenqiang Ying, Ge Li, and Wen Gao</div> <div class="authoraddress" style="line-adjust:0"> School of Electronic and Computer Engineering, Shenzhen Graduate School, Peking University, Shenzhen, China<br />  </div> <div class="authoremail email" style="line-adjust:0">geli@ece.pku.edu.cn</div> <br/> <a href="https://github.com/baidut/BIMEF">Source Code Available</a> </div> <br>  <br>  </figure> <br><br> <TABLE width="910" border="0"> <TBODY> <TR> <TD width="10"></TD> <TD class="large">Abstract</TD> </TR> <TR> <TD width="10"></TD> <TD width="400"><div align="justify">Low-light images are not conducive to human observation and computer vision algorithms due to their low visibility. Although many image enhancement techniques have been proposed to solve this problem, existing methods inevitably introduce contrast under- and over-enhancement. Inspired by human visual system, we design a multi-exposure fusion framework for low-light image enhancement. Based on the framework, we propose a dual-exposure fusion algorithm to provide an accurate contrast and lightness enhancement. Specifically, we first design the weight matrix for image fusion using illumination estimation techniques. Then we introduce our camera response model to synthesize multi-exposure images. Next, we find the best exposure ratio so that the synthetic image is well-exposed in the regions where the original image is under-exposed. Finally, the enhanced result is obtained by fusing the input image and the synthetic image according to the weight matrix. Experiments show that our method can obtain results with less contrast and lightness distortion compared to that of several state-of-the-art methods.</div> </TD> </TR> </TBODY> </TABLE>     <br><br> <div id="NASA"> </div> <TABLE width="910" border="0"> <TBODY> <TR> <TD width="10"></TD> <TD class="large">Downloads</TD> </TR> <TR> <TD width="10"></TD> <TD width="400"><div align="justify"><a href='https://github.com/baidut/BIMEF'>https://github.com/baidut/BIMEF</a>.</div> </TD> </TR> </TBODY> </TABLE> <br><br> <script language="javascript" type=text/javascript> function switchImage( divElement, imageURL ) { document.getElementById( divElement ).src = imageURL; } var nComps = 0; function addComparisonSet( images, names, pad, width, attachDiv, suppressSpaceAfter, downside ) { var imageset = "imageset" + nComps; var fieldset = "field" + nComps; var formset = "form" + nComps; var img = "<img id='" + imageset + "' src='" + images[0] + "'>"; var html; if(downside){ html = "<TABLE width='910' align='center' border='0'><TBODY><TR><TD align='center'>"+ img +"</TD></TR><TD align='center'>"; } else{ html = "<TABLE width='910' border='0'><TBODY><TR><TD width='" + pad + "'></TD><TD width='" + width + "'>"+ img +"</TD><TD width='30'></TD><TD>"; } var form = "<form name='" + formset + "'>"; for( var i = 0; i < images.length; i++ ) { var checked = ""; if( i == 0 ) { checked = " checked"; } form += "<input type='radio' name='" + fieldset + "' value='" + i + "' onchange=\'switchImage( \"" + imageset + "\", \"" + images[i] + "\" )\'" + checked + ">" + names[i]; if (! downside){ form += "<br/>"; } } // If you want a horizontal line separating the items: //html += "</form></TD></TR></TBODY></TABLE><br><hr width='920'><br>"; // If not: form += "</form>"; if(downside){ html += form + "</TD></TBODY></TABLE>"; } else{ html += form + "</TD></TR></TBODY></TABLE>"; } if( !suppressSpaceAfter ) { html += "<br><br>"; } nComps++; // Add set to document var tab = document.createElement("DIV"); tab.setAttribute('align', 'center'); // tab.setAttribute('style', 'display:inline'); // display:inline; style="display:inline-block" tab.innerHTML = html; document.getElementById(attachDiv).appendChild( tab ); } // Define comparison sets... var names = ["Original", "HE", "BPDHE", "DHECI", "LIME", "AMSR", "Dong", "NPE", "Ours" ]; var images22 = ["./images/image22.jpg", "./images/image22__he.PNG", "./images/image22__bpdhe.PNG", "./images/image22__dheci.PNG", "./images/image22__lime.PNG", "./images/image22__amsr.PNG", "./images/image22__dong.PNG", "./images/image22__npe.PNG", "./images/image22__ours_caip2017.PNG", ]; addComparisonSet( images22, names, 200, 100, "NASA"); // var tab = document.createElement("DIV"); // tab.innerHTML = "<TABLE><TBODY><TD width='50'/><TD><a href=http://nuit-blanche.blogspot.com/2012/03/let-there-be-only-one-fabio.html?m=1 target='_blank'>Redress the Lena imbalance!</a> Unfortunately discovered only after TPAMI had finalized the paper.</TD></TBODY></TABLE><br><br>"; // var el = document.getElementById("SupResAppendPoint").appendChild( tab ); </script> <hr width='920'><br><br> <TABLE width="910" border="0"> <TBODY> <TR> <TD width="10"></TD> <TD class="large">Acknowledgements</TD> </TR> <TR> <TD height="10"></TD> </TR> <TR> <TD width="10"></TD> <TD>This work was supported by the grant of National Science Foundation of China (No.U1611461), Shenzhen Peacock Plan (20130408-183003656), and Science and Technology Planning Project of Guangdong Province, China (No. 2014B090910001).</TD> </TR> <TR> <TD height="10"></TD> </TR>  </TBODY> </TABLE> <br><br><br><br>  </BODY></HTML>