issue with poly2mask

13 次查看（过去 30 天）

David Serke 2018-7-11

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/409886-issue-with-poly2mask

编辑： dpb 2018-7-11

Hello, I am trying to find the intersection over union of two polygons using poly2mask and polyarea. My two polygons are defined by:

box_rad_actu_lons_5 =
 -2.0943   -2.1058   -2.0754   -2.0640   -2.0943
box_rad_actu_lats_5 =
  0.6282    0.6135    0.5973    0.6120    0.6282
box_rad_proj_lons_5 =
 -2.0948   -2.1057   -2.0735   -2.0627   -2.0948
box_rad_proj_lats_5 =
  0.6284    0.6134    0.5975    0.6125    0.6284

When I apply poly2mask, as follows:

box_actu  = poly2mask(box_rad_actu_lons_5, box_rad_actu_lats_5, 1000, 1000);
box_proj  = poly2mask(box_rad_proj_lons_5, box_rad_proj_lats_5, 1000, 1000);

The results are no pixels that are within the polygons (value =1) for either box. What am I doing wrong?

Thanks, Dave Serke