<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Dear OMERO developers,<div class=""><br class=""></div><div class="">We are experimenting some errors related with the greyscale normalisation of the images, when changing the min slider in entry EMD-3027 you can notice them:</div><div class=""><br class=""></div><div class=""><a href="http://www.ebi.ac.uk/pdbe/emdb/3dbrowse/EMD-3027" class="">http://www.ebi.ac.uk/pdbe/emdb/3dbrowse/EMD-3027</a></div><div class=""><br class=""></div><div class="">The background is switching from black to white, this happens in many other situations and is blocking our application to be released into production:</div><div class=""><br class=""></div><div class="">White background:</div><div class=""><br class=""></div><div class=""><a href="http://www.ebi.ac.uk/pdbe/emdb/empiar_omero/webgateway/render_image_region_quality/18717/88/0/100/?c=1|0.0029:0.01731®ion=37,-1,211,211" class="">http://www.ebi.ac.uk/pdbe/emdb/empiar_omero/webgateway/render_image_region_quality/18717/88/0/100/?c=1%7C0.0029:0.01731®ion=37,-1,211,211</a></div><div class=""><br class=""></div><div class="">Black background with white dots surrounding :</div><div class=""><br class=""></div><div class=""><a href="http://www.ebi.ac.uk/pdbe/emdb/empiar_omero/webgateway/render_image_region_quality/18717/88/0/100?c=1%7C0.00054:0.01731®ion=37,-1,211,211" class="">http://www.ebi.ac.uk/pdbe/emdb/empiar_omero/webgateway/render_image_region_quality/18717/88/0/100?c=1|0.00054:0.01731®ion=37,-1,211,211</a></div><div class=""><br class=""></div><div class="">In many other cases white dots appear, but should be black, like EMD-1057, with 15 white dots that should be black instead of white:</div><div class=""><br class=""></div><div class=""><a href="http://www.ebi.ac.uk/pdbe/emdb/3dbrowse/EMD-1057" class="">http://www.ebi.ac.uk/pdbe/emdb/3dbrowse/EMD-1057</a></div><div class=""><br class=""></div><div class=""><a href="http://www.ebi.ac.uk/pdbe/emdb/empiar_omero/webgateway/render_image_region_quality/8019/87/0/100?c=1%7C14.9:228.1®ion=26,8,147,147" class="">http://www.ebi.ac.uk/pdbe/emdb/empiar_omero/webgateway/render_image_region_quality/8019/87/0/100?c=1|14.9:228.1®ion=26,8,147,147</a></div><div class=""><br class=""></div><div class="">This are calls to render_image_region but changing jpeg compression quality, it happens also with “render_image” web gateway call which we did not modify.</div><div class=""><br class=""></div><div class=""></div><div class=""><br class=""></div><div class="">Can you check these errors please?</div><div class=""><br class=""></div><div class="">This is the map file:</div><div class=""><br class=""></div><div class=""></div></body></html>