<div dir="ltr"><p style="font-size:13px;margin:0px;font-stretch:normal;line-height:normal;font-family:"Helvetica Neue";font-size-adjust:none;font-kerning:auto;font-variant-alternates:normal;font-variant-ligatures:normal;font-variant-numeric:normal;font-variant-east-asian:normal;font-feature-settings:normal">Hi,</p><p style="font-size:13px;margin:0px;font-stretch:normal;line-height:normal;font-family:"Helvetica Neue";font-size-adjust:none;font-kerning:auto;font-variant-alternates:normal;font-variant-ligatures:normal;font-variant-numeric:normal;font-variant-east-asian:normal;font-feature-settings:normal">Thanks for the responses. </p><p style="font-size:13px;margin:0px;font-stretch:normal;line-height:normal;font-family:"Helvetica Neue";font-size-adjust:none;font-kerning:auto;font-variant-alternates:normal;font-variant-ligatures:normal;font-variant-numeric:normal;font-variant-east-asian:normal;font-feature-settings:normal">I was checking COG and its different compression, and I found that JPEG2000 has few advantages over COG. One major advantage is its resampling method for the overview levels, which I found superior to all the other resampling options available at the COG driver.</p><div class="gmail-yj6qo"></div><br class="gmail-Apple-interchange-newline"></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sat, Apr 29, 2023 at 7:53 AM Ujaval Gandhi <<a href="mailto:ujaval@spatialthoughts.com">ujaval@spatialthoughts.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex"><div dir="ltr">What about using JPEG compression with GeoTIFF files instead and thus enabling you to use COGs? In my experience, you can get pretty close to the JPEG2000 file size with a GeoTIFF with JPEG compression.<br clear="all"><div><div dir="ltr"><div dir="ltr">---<div>Ujaval Gandhi</div><div>Spatial Thoughts</div><div><a href="https://mailtrack.io/trace/link/f9609ee3ad14467596aab38dba52bda35825bff6?w=bXRvYmJ5NTlAZ21haWwuY29t&url=http%3A%2F%2Fwww.spatialthoughts.com&userId=8747767&signature=0f058cfed806f1e3" target="_blank">www.spatialthoughts.com</a></div><div><br></div></div></div></div><br></div><br><img width="0" height="0" alt="" style="display: flex;" src="https://mailtrack.io/trace/mail/w/bXRvYmJ5NTlAZ21haWwuY29t/c46303e286007cf0c8a0d6f66f617e531a93afef.png?u=8747767"><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Apr 28, 2023 at 12:21 PM Tobby Moalem <<a href="mailto:mtobby59@gmail.com" target="_blank">mtobby59@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex"><div dir="ltr"><span style="color:rgb(80,0,80)"><div style="font-style:inherit;font-variant-ligatures:inherit;font-variant-caps:inherit;font-variant-alternates:inherit;font-variant-numeric:inherit;font-variant-east-asian:inherit;color:rgb(0,0,0);margin:0px;padding:0px;border:0px;font-stretch:inherit;font-kerning:inherit;font-feature-settings:inherit;vertical-align:baseline;box-sizing:inherit;width:658px"><p style="margin:0px 0px 1.1em;padding:0px;border:0px;font-style:inherit;font-variant-ligatures:inherit;font-variant-caps:inherit;font-variant-alternates:inherit;font-variant-numeric:inherit;font-variant-east-asian:inherit;font-stretch:inherit;line-height:inherit;font-family:inherit;font-kerning:inherit;font-feature-settings:inherit;font-size:15px;vertical-align:baseline;box-sizing:inherit;clear:both">I am looking for a way to use my JPEG2000 over object storage (s3) efficiently. JPEG2000 structure is progressive by resolution, meaning that in order to get the maximum resolution of a tile, all previous resolutions have to be decoded. This leads to performing many GET request that cause slow performance for the user.</p><p style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant-ligatures:inherit;font-variant-caps:inherit;font-variant-alternates:inherit;font-variant-numeric:inherit;font-variant-east-asian:inherit;font-stretch:inherit;line-height:inherit;font-family:inherit;font-kerning:inherit;font-feature-settings:inherit;font-size:15px;vertical-align:baseline;box-sizing:inherit;clear:both">I know that JPEG2000 is extremely flexible, so I wonder if there is a way to store each resolution level by itself (similar to COG structure), so that with one GET request I will receive the entire resolution level of a tile.</p></div><div style="font-family:inherit;font-size:13px;font-style:inherit;font-variant-ligatures:inherit;font-variant-caps:inherit;font-variant-alternates:inherit;font-variant-numeric:inherit;font-variant-east-asian:inherit;color:rgb(0,0,0);margin-right:0px;margin-left:0px;padding:0px;border:0px;font-stretch:inherit;line-height:inherit;font-kerning:inherit;font-feature-settings:inherit;vertical-align:baseline;box-sizing:inherit"><div style="margin-right:0px;margin-bottom:10px;margin-left:0px;padding:0px;border:0px;font-stretch:inherit;line-height:inherit;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI Adjusted","Segoe UI","Liberation Sans",sans-serif;font-kerning:inherit;font-variant-alternates:inherit;font-variant-ligatures:inherit;font-variant-numeric:inherit;font-variant-east-asian:inherit;font-feature-settings:inherit;vertical-align:baseline;box-sizing:inherit;clear:both;color:rgb(35,38,41);display:flex"><div style="margin-right:0px;margin-left:0px;padding:0px;border:0px;font-style:inherit;font-variant-ligatures:inherit;font-variant-caps:inherit;font-variant-alternates:inherit;font-variant-numeric:inherit;font-variant-east-asian:inherit;font-stretch:inherit;line-height:inherit;font-family:inherit;font-kerning:inherit;font-feature-settings:inherit;vertical-align:baseline;box-sizing:inherit;display:flex"></div></div><br></div></span>Thanks in advance,<div>Tobby</div></div>
_______________________________________________<br>
gdal-dev mailing list<br>
<a href="mailto:gdal-dev@lists.osgeo.org" target="_blank">gdal-dev@lists.osgeo.org</a><br>
<a href="https://lists.osgeo.org/mailman/listinfo/gdal-dev" rel="noreferrer" target="_blank">https://lists.osgeo.org/mailman/listinfo/gdal-dev</a><br>
</blockquote></div>
</blockquote></div>