Possibly unstable georeferencing

When using Sentle to generate a cube in my test case, the georeferencing seems to be not super stable. This can be seen as a "shaky" animation when putting the cube into Lexcube and animating through time. The area in this case is in the intersection area of two Sentinel tiles, which could be the only reason or just an amplification of an underlying problem.

Cube Generation:

from sentle import sentle
from rasterio.crs import CRS

if __name__ == "__main__":

    da = sentle.process(
            target_crs=CRS.from_string("EPSG:8857"),
            bound_left=961600,
            bound_bottom=6122140,
            bound_right=963070,
            bound_top=6123050,
            datetime="2016-06-17/2024-06-17",
            target_resolution=10,
            S2_mask_snow=True,
            S2_cloud_classification=True,
            S2_cloud_classification_device="cuda",
            S1_assets=None,
            S2_apply_snow_mask=True,
            S2_apply_cloud_mask=True,
            time_composite_freq=None,
            num_workers=30,
        )

    sentle.save_as_zarr(da, "test_cube.zarr")

Visualization:

import lexcube
import numpy as np
import xarray as xr
import spyndex
import cubo
ds = xr.open_dataset("test_cube.zarr", chunks={}, engine="zarr")["sentle"]

d = spyndex.computeIndex(
    index = ["kNDVI", "NDMI"],
    params = {
        "N": ds.sel(band = "B08"),
        "R": ds.sel(band = "B04"),
        "L": 0.5,
        "S1": ds.sel(band = "B11"),
        "kNN" : 1.0,
        "kNR" : spyndex.computeKernel(
            kernel = "RBF",
            params = {
                "a": ds.sel(band = "B08"),
                "b": ds.sel(band = "B04"),
                "sigma": ds.sel(band = ["B08","B04"]).mean("band")
            }),
    }
)

def filter(a):

    nan_percentage = a.isnull().mean(dim=['y', 'x'])
    valid_times = nan_percentage < 0.4
    return a.where(valid_times.compute(), drop=True)

kndvi = filter(d[0])
ndmi = filter(d[1])

w = lexcube.Cube3DWidget(kndvi, vmin=0.0, vmax=1, cmap="tempo")
w

Result:

https://github.com/user-attachments/assets/a72cc67e-d9fd-4ff4-90cc-624375770196

cmosig / sentle

Possibly unstable georeferencing #26