thief of hearts Posted February 18, 2012 Report Share Posted February 18, 2012 Hi everyone, i have Geoeye image and metadata for it can i use The angle of elevation of the sun to find heights of buildings using the tangent of the angel Quote Link to comment Share on other sites More sharing options...
Administrators EmperoR Posted February 18, 2012 Administrators Report Share Posted February 18, 2012 those require a complex math model, you may check in ERDAS 2011, as ERDAS dev promising to add this functionality in those version, but for easier way, use stereoscopic image regards, Quote Link to comment Share on other sites More sharing options...
thief of hearts Posted February 18, 2012 Author Report Share Posted February 18, 2012 thank u so much for ur post ihave erdas 2011 but idon't know where i can find these function Quote Link to comment Share on other sites More sharing options...
Administrators EmperoR Posted February 18, 2012 Administrators Report Share Posted February 18, 2012 check here : measure height in 2D view - ERDAS Communities Quote Link to comment Share on other sites More sharing options...
thief of hearts Posted February 18, 2012 Author Report Share Posted February 18, 2012 thank u so so so much Quote Link to comment Share on other sites More sharing options...
thief of hearts Posted February 27, 2012 Author Report Share Posted February 27, 2012 i find way to measure heights in images (2D) the way is by measure shadow for object that u want measure by using the measure tool in erdas then using the tan law to find the height , tan(q)= H/S , where q: the angle elevation of the sun , H:height of object , S: length of shadow Quote Link to comment Share on other sites More sharing options...
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