<html><head></head><body><div style="color:#000; background-color:#fff; font-family:verdana, helvetica, sans-serif;font-size:13px"><div dir="ltr" id="yui_3_16_0_1_1447249753947_2571"><span id="yui_3_16_0_1_1447249753947_2590">In the instructions of the TM1237, I see</span></div><div id="yui_3_16_0_1_1447249753947_2522"> <div class="" id="yui_3_16_0_1_1447249753947_2530"><strong class="" id="yui_3_16_0_1_1447249753947_2532">Imagery:</strong></div>
<div class="" id="yui_3_16_0_1_1447249753947_2534" dir="ltr"><em class="" id="yui_3_16_0_1_1447249753947_2536">DO NOT use Drone Imagery. This is out of date and has poor spatial accuracy.</em></div></div><div id="yui_3_16_0_1_1447249753947_2519" class="signature"><div id="yui_3_16_0_1_1447249753947_2724"><span style="font-style:italic;color:rgb(0, 0, 191);font-weight:bold;"> </span></div><div class="" id="yui_3_16_0_1_1447249753947_2744">What is the purpose of this note? It sound quite negative without any justification. And dont you think this could be perceived as quite negative from our Haiti OSM colleagues that did a great job operating drone over the last few years?</div><div id="yui_3_16_0_1_1447249753947_4252" class=""><br></div><div id="yui_3_16_0_1_1447249753947_4253" class="">I suggest that you correct or remove this instruction.<br><span class="" id="yui_3_16_0_1_1447249753947_2751" style="font-style:italic;color:rgb(0, 0, 191);font-weight:bold;"></span></div><div id="yui_3_16_0_1_1447249753947_2729" dir="ltr"><br></div><div id="yui_3_16_0_1_1447249753947_2728" dir="ltr">While in Limonade, Haiti in 2013, I had the opportunity to use drones images of Limonade to trace in detail. I was able to compare both with what I observed walking in the informal and very dense areas of the town and with Satellite Imagery. <br></div><div id="yui_3_16_0_1_1447249753947_2840" dir="ltr"><br></div><div id="yui_3_16_0_1_1447249753947_2839" dir="ltr">The drone image was well aligned and provided great details (4cm accuracy). There are no streets in such areas and paths cannot be observed from Satellite imagery (50 cm).</div><div id="yui_3_16_0_1_1447249753947_2809" dir="ltr"><br></div><div id="yui_3_16_0_1_1447249753947_3884">Even if the drone image available is older, dont you think that this can complete the information provided from the satellite imagery? And quite easy to align the 2 images.<br></div><div id="yui_3_16_0_1_1447249753947_3935"><br></div><div id="yui_3_16_0_1_1447249753947_3936">For this area, I see a white surface on the satellite imagery, but the drone imagery let me clearly see the roof.</div><div dir="ltr" id="yui_3_16_0_1_1447249753947_3898"><a id="yui_3_16_0_1_1447249753947_3896" href="https://www.openstreetmap.org/#map=19/18.562506904365602/-72.30239403945538">https://www.openstreetmap.org/#map=19/18.562506904365602/-72.30239403945538</a><br></div><div id="yui_3_16_0_1_1447249753947_2743"><br></div><div id="yui_3_16_0_1_1447249753947_3995">Here I can see that cars are parked in the yard.</div><div dir="ltr" id="yui_3_16_0_1_1447249753947_3998"><a id="yui_3_16_0_1_1447249753947_3996" href="https://www.openstreetmap.org/#map=20/18.562808676685652/-72.30254150088288">https://www.openstreetmap.org/#map=20/18.562808676685652/-72.30254150088288</a></div><div id="yui_3_16_0_1_1447249753947_4019" dir="ltr"><br></div><div id="yui_3_16_0_1_1447249753947_4099" dir="ltr">Here, it is a lot easier to distinguish the various roofs on the drone imagery.</div><div id="yui_3_16_0_1_1447249753947_4080" dir="ltr"><a id="yui_3_16_0_1_1447249753947_4079" href="https://www.openstreetmap.org/#map=20/18.56351490050388/-72.30203326964823">https://www.openstreetmap.org/#map=20/18.56351490050388/-72.30203326964823</a></div><div id="yui_3_16_0_1_1447249753947_4100" dir="ltr"><br></div><div id="yui_3_16_0_1_1447249753947_3998">Here, I can better distinguish on the drone image each house, plus I can see the path between houses</div><div dir="ltr" id="yui_3_16_0_1_1447249753947_4179"><a id="yui_3_16_0_1_1447249753947_4177" href="https://www.openstreetmap.org/#map=21/18.5649624/-72.3045042">https://www.openstreetmap.org/#map=21/18.5649624/-72.3045042</a></div><div id="yui_3_16_0_1_1447249753947_4199" dir="ltr"><br></div><div id="yui_3_16_0_1_1447249753947_4271" dir="ltr">Regard<br></div><div id="yui_3_16_0_1_1447249753947_4209"><br></div><div id="yui_3_16_0_1_1447249753947_4210"><span id="yui_3_16_0_1_1447249753947_4111" style="font-style:italic;color:rgb(0, 0, 191);font-weight:bold;"><font id="yui_3_16_0_1_1447249753947_4112" face="garamond, new york, times, serif">Pierre </font></span></div><div id="yui_3_16_0_1_1447249753947_4273"><br><span id="yui_3_16_0_1_1447249753947_4111" style="font-style:italic;color:rgb(0, 0, 191);font-weight:bold;"></span></div><div id="yui_3_16_0_1_1447249753947_4274"><br><span id="yui_3_16_0_1_1447249753947_4111" style="font-style:italic;color:rgb(0, 0, 191);font-weight:bold;"></span></div><div id="yui_3_16_0_1_1447249753947_4275"><span id="yui_3_16_0_1_1447249753947_4111" style="font-style:italic;color:rgb(0, 0, 191);font-weight:bold;"></span><br></div></div></div></body></html>