We are interested in a scientific project to obtain high-resolution elevation maps of the micro topography around our measurement stations where we measure carbon dioxide and methane fluxes between the local vegetation and the atmosphere. I understand that the DD app only programs photos taken vertically of the scene. But I think that additional photos taken at oblique angles improves the elevation map. I did some tests using the Altizure app which allows to program very easily a 5-pass coverage of the area of interest: 1 for the vertical photos and 4 additional passes with photos of the scene at an angle of 45deg in four directions. The results, after uploading the photos of all 5 passes to DD appeared to be much more realistic than uploading only the first pass photos. Does the stitching algorithm of DD indeed perform better for the elevation map when oblique photos are included? And if so, could additional oblique photo taking be included in the DD app?
My second urgent feature request would be to include the vertical scale information. The exported elevation map consists only of coloured pixels, but a proper scale indicating which RGB value corresponds to which elevation in meters would be extremely helpful. The present elevation map picture is not suitable for our project.
I might also add that the handling of the Altizure app for mission planning and controlling is in many respects superior to what even the new DD app offers. It is much more intuitive to operate, even if it only permits the definition of mapping rectangles. However, the photo stitching engine and the products of DD are much more superior and in principle geared for professional applications.