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<p class="MsoNormal"><span lang="EN-GB">Hello, I need to know the disk size of an image, I calculate it using the following formula:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Disk size=( sizex*sizey*bits per pixel)/8 =memory size without compression<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">But when the image is compressed on disk it occupies less and the size in memory is much larger, is there some method in the C++ GDAL API, to obtain the size on disk, size on memory, or the compression factor?
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Example:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">SizeX: 60416<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">SizeY:38656<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Bits per pixel:24<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Size memory= (60416*38656*24)/8=7.006.322.688 bytes<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Size disk=2.137.644.631 bytes<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">The format image is <b>COG – Cloud Optimized GeoTIFF generator, and has JPEG compression<o:p></o:p></b></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Thanks and regards<o:p></o:p></span></p>
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<div style="LINE-HEIGHT: 13px" align="left"><span style="FONT-SIZE: 9pt; FONT-FAMILY: Myriad Pro, Open Sans, Arial"><strong>Elena Ruiz </strong></span><br><span style="FONT-SIZE: 7pt; FONT-FAMILY: Myriad Pro, Open Sans, Arial">Sofware Development & Technical Support<br></span><span style="FONT-SIZE: 7pt; FONT-FAMILY: Myriad Pro, Open Sans, Arial">Tel.
+34 952 43 97 71 <br>eruiz@aplitop.com<br>Sumatra, 9 - 29190 Málaga (Spain)<br></span><span style="FONT-SIZE: 7pt; FONT-FAMILY: Myriad Pro, Open Sans, Arial"><strong>www.aplitop.com<br><br><a class="socialLink" href="https://www.facebook.com/AplitopSL/"><img class="socialLink" style="HEIGHT: 15px; WIDTH: 15px" border="0" src="cid:SocialLink_Facebook_32x32_a745adb8-c250-4372-8480-e77f503dad3d.png" width="15" height="15"></a> <a class="socialLink" href="https://twitter.com/aplitop"><img class="socialLink" style="HEIGHT: 15px; WIDTH: 15px" border="0" src="cid:SocialLink_Twitter_32x32_858247f6-9d4a-4740-a6b3-9b5ebfd98a97.png" width="15" height="15"></a> <a class="socialLink" href="https://www.linkedin.com/company/aplitop"><img class="socialLink" style="HEIGHT: 15px; WIDTH: 15px" border="0" src="cid:SocialLink_Linkedin_32x32_154d63de-bf68-468f-9eb0-ffed102fac77.png" width="15" height="15"></a> <a class="socialLink" href="https://www.youtube.com/user/aplitop"><img class="socialLink" style="HEIGHT: 15px; WIDTH: 15px" border="0" src="cid:SocialLink_Youtube_32x32_0dea15dd-3774-4086-be9d-f62560b70c86.png" width="15" height="15"></a></strong></span></div></td></tr></tbody></table>
<p style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><span style="FONT-SIZE: 6pt; FONT-FAMILY: Myriad Pro">In accordance with the
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2016/679<br></span><a href="https://www.aplitop.com/New/en/443/publication-of-point-clouds-on-web" title=""></a><span style="FONT-SIZE: 6pt; FONT-FAMILY: Myriad Pro"><br></span></p><p style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><span style="FONT-SIZE: 6pt; FONT-FAMILY: Myriad Pro"><br></span><a href="https://www.aplitop.com/New/en/438/tcpmdt-v9-is-here" title=""></a><a href="https://www.aplitop.com/Event/en/429/aplitop-at-intergeo-2022-essen" title=""></a><span style="FONT-SIZE: 6pt; FONT-FAMILY: Myriad Pro"><br><br><a title="" href="https://www.aplitop.com/Event/en/358/intergeo-2019"></a><br><br></span></p>
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