Jeff Epler's blog 2009-07-24T02:19:06Z Photos, electronics, cnc, and more Jeff Eplerjepler@unpythonic.net CropGUI 0.1.1: now with gtk 2009-07-24T02:19:06Z 2009-07-24T02:19:06Z https://gamma.unpythonic.net/01248401946 <div style="float:right;clear:right"><!-- cropgtk.png--><div class=albumouter style=width:306px id=><div class=albumimage style="width:306px;margin-left:0.0px;"><a href="https://media.unpythonic.net/emergent-files/01248401946/cropgtk.png" class="thickbox" rel="album" title="Gtk version of cropgui"><img src="https://media.unpythonic.net/emergent-files/01248401946/cropgtk-small.jpg" width=300 height=259></a><div ><div style="float: right" ><a href="https://media.unpythonic.net/emergent-files/01248401946/cropgtk.png"><img class=zoom src="https://media.unpythonic.net/emergent-files/default/zoom.png"></a></div><a href="https://media.unpythonic.net/emergent-files/01248401946/cropgtk.png">Gtk version of cropgui</a></div></div></div> </div> <a href="https://gamma.unpythonic.net/01235516977">Earlier this year</a>, I released a program for lossless cropping of jpeg images. This week, based on feedback from Ingrid, I ported the program to gtk (it originally used tkinter). cropgui: A Linux GUI for Lossless JPEG Cropping 2009-02-24T23:09:37Z 2009-02-24T23:09:37Z https://gamma.unpythonic.net/01235516977 <div style="float:right;clear:right"><!-- cropgui.jpg--><div class=albumouter style=width:306px id=><div class=albumimage style="width:306px;margin-left:0.0px;"><a href="https://media.unpythonic.net/emergent-files/01235516977/cropgui.jpg" class="thickbox" rel="album" title="Cropping a tiny insect"><img src="https://media.unpythonic.net/emergent-files/01235516977/cropgui-small.jpg" width=300 height=228></a><div ><div style="float: right" ><a href="https://media.unpythonic.net/emergent-files/01235516977/cropgui.jpg"><img class=zoom src="https://media.unpythonic.net/emergent-files/default/zoom.png"></a></div><a href="https://media.unpythonic.net/emergent-files/01235516977/cropgui.jpg">Cropping a tiny insect</a></div></div></div> </div> <b>Update</b>: See the <a href="https://gamma.unpythonic.net/01248401946">newer version of cropgui</a> <p>Of the pictures from my recent trip I'd like to put online, I've found that in 75% of the cases where I want to retouch the photo, it's to crop it and nothing else. Since I shoot in jpeg, it's a lossy process to load the jpeg in gimp, crop it, and write the result. <p>But it turns out that debian's jpegtran has a &quot;-crop&quot; flag which performs lossless cropping of jpeg images as long as the crop is to a multiple of what the manpage calls the &quot;iMCU boundary&quot;, a (usually?) 8x8 block of pixels. This feature was pioneered by Guido of <a href="http://jpegclub.org/">jpegclub.org</a> some years ago. <p>There's apparently a nice <a href="http://www.softpedia.com/progScreenshots/Jpegcrop-Screenshot-91058.html">Windows front-end to this program</a>, but I didn't find a Linux one. So I wrote one! It's pretty basic, but it gets the job done. You can download it below.