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<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">Hi,<br /><br />Most of my clients provide aerial photography in ECW format. These images provide high resolution, are relatively small and quickly rewrite on the screen when panning.</p>
<p style="-qt-paragraph-type:empty; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;"></p>
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">Lately I have been getting JPG files. These files however are quite big and take significantly longer time to rewrite.</p>
<p style="-qt-paragraph-type:empty; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;"></p>
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">What is an alternative image format to ECW in the 'open free' environment? Something GDAL can be used to convert from JPG without jumping through hoops.</p>
<p style="-qt-paragraph-type:empty; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;"></p>
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">Ideally the file sizes should be low despite the high resolution, gvSIG able to read it natively and is quick to rewrite when panning.</p>
<p style="-qt-paragraph-type:empty; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;"></p>
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">Any suggestions would be appreciated.</p>
<p style="-qt-paragraph-type:empty; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;"></p>
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">PS. I know gdal_translate can, supposedly convert between JPG and ECW, but despite many attempts I have been unable to get this to work. I am looking for something else, if possible, that has the same intrinsic properties but is recognized by default in the gdal libraries so that every time I get an update of the 'free' Ubuntu version the FWTools or alternative 'commercially enabled' version is not replaced.<br /></p>
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">-- <br />Cheers Simon</p>
<p style=" margin-top:12px; margin-bottom:12px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;"> Simon Cropper <br /> Botanicus Australia Pty Ltd<br /> PO Box 160, Sunshine, Victoria 3020.<br /> P: 9311 5822. M: 041 830 3437.<br /> <a href="mailto:scropper@botanicusaustralia.com.au"><span style=" text-decoration: underline; color:#0057ae;">mailto: scropper@botanicusaustralia.com.au</span></a> <br /> <a href="http://www.botanicusaustralia.com.au"><span style=" text-decoration: underline; color:#0057ae;">web: www.botanicusaustralia.com.au</span></a> </p>
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<p style=" margin-top:12px; margin-bottom:12px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">(C) Simon Cropper 2010. Creative Commons Attribution-ShareAlike 3.0 Australia<br /></p></body></html>