Comments (2)
lewfish
commented on September 20, 2024
1
@AdeelH The second option seems more intuitive to me, and I would prefer that.
from raster-vision.
AdeelH
commented on September 20, 2024
@lewfish, which of the following do you think looks more intuitive? Currently, RV is doing a mix of both which is buggy.
Option 1
Pixel indices correspond to the pixel indices in the source file. So, e.g., the first chip_sz=5 window will have a different address depending on the crop. This is simpler and closer to how RV used to handle this in earlier versions.
rs = RasterioSource(..., extent=Box(10, 10, 20, 20))
rs.extent # Box(10, 10, 20, 20)
rs.get_chip(Box(0, 0, 5, 5)) # outside the extent so blank chip
rs.get_chip(Box(10, 10, 15, 15)) # correct window to get the first chip (chip_sz=5)
rs[:5, :5] # equivalent to rs.get_chip(Box(0, 0, 5, 5)), blank chip
rs[10:15, 10:15] # equivalent to rs.get_chip(Box(10, 10, 15, 15)), first legit chipOption 2
Here, pixel indices are relative to the crop. So the first chip_sz=5 window will always be Box(0, 0, 5, 5) regardless of the crop, which is arguably more user-friendly.
rs = RasterioSource(..., bbox=Box(10, 10, 20, 20))
rs.extent # Box(0, 0, 10, 10), always == (0, 0, H, W)
rs.bbox # Box(10, 10, 20, 20)
rs.get_chip(Box(0, 0, 5, 5)) # correct window to get the first chip (chip_sz=5)
rs.get_chip(Box(10, 10, 15, 15)) # outside the extent so blank chip
rs[:5, :5] # equivalent to rs.get_chip(Box(0, 0, 5, 5)), first legit chip
rs[10:15, 10:15] # equivalent to rs.get_chip(Box(10, 10, 15, 15)), blank chipfrom raster-vision.
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