#odm_br Open Drone Map dataset with images and gcp_list.txt 85MB
Canon PowerShot SX260HS focal 4.5mm wxh 4000x3000 focal ~= 2904 pixel
GSD: 2.42cm
Flight height: 75m
EPSG:32722 WGS84 UTM 22S
QGIS x,y=0,0 uper left corner; x:right+; y:up+, down-
ODM x,y=0,0 uper left corner; x:right+; y:down+ = abs(qgis y)
GCP x,y=0,0 upper left corner; x=col, y=row; x={0..width-1}, y={0..height-1};
10 images, with GPS exif tags
19 painted targets, measured with geodetic GPS
compiled ODM , sources from git 2017-04-10
1- Rescaled Pixel_X, pixel_Y to fit resized images. From 4000x3000 to 2400x1800.
Scale factor 0.6
from this:
EPSG:32722
658528.361 7167002.098 890.636 2460.6 233.9 IMG_5349.JPG HV01
to this:
EPSG:32722
658528.361 7167002.098 890.636 1476.4 140.3 IMG_5349.JPG HV01
and than this: ODM Pixel_X, Pixel_Y must be integers
EPSG:32722
658528.361 7167002.098 890.636 1476 140 IMG_5349.JPG HV01
2- ODM image axis 0/0 upper left corner.
Y axis grows positive downwards.
3- empty lines, wrong header can be a problem. Extra point name field is ok.
4- first line must contain EPSG
5- for WebODM version 2.5.0, gcp_list.txt must be placed in the same folder as the images.
[]s
julio 2017-04-11