Rendering small tif file

[julianblue]

Hi,

I am testing titiler endpoints to visualise clipped satellite images. These files can have dimensions as low as 150x150 pixels. When using the tile endpoints the images are not fully rendered as seen below. Is the issue linked to the cog configuration or something else ?
(Black areas render as soon as I zoom in a lot closer.)

rio cogeo info
bash`
Profile
Width: 71
Height: 173
Bands: 8
Tiled: True
Dtype: uint16
NoData: 0.0
Alpha Band: False
Internal Mask: False
Interleave: PIXEL
ColorMap: False
ColorInterp: ('undefined', 'blue', 'undefined', 'green', 'undefined', 'red', 'undefined', 'undefined')
Scales: (1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0)
Offsets: (0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0)

Geo
Crs: EPSG:32632
Origin: (518409.0, 5503611.0)
Resolution: (3.0, -3.0)
BoundingBox: (518409.0, 5503092.0, 518622.0, 5503611.0)
MinZoom: 15
MaxZoom: 15

Image Metadata
AREA_OR_POINT: Area
TIFFTAG_DATETIME: 2024:04:21 09:36:55
TIFFTAG_IMAGEDESCRIPTION: {"atmospheric_correction": {"aerosol_model": "continental", "aot_coverage": 1.0, "aot_mean_quality": 4, "aot_method": "map", "aot_source": "mod09cma_nrt", "aot_status": "Data Found", "aot_std": 0.0, "aot_used": 0.06, "atmospheric_correction_algorithm": "6Sv2.1", "atmospheric_model": "water_vapor_and_ozone", "luts_version": 3, "ozone_coverage": 1.0, "ozone_mean_quality": 260, "ozone_method": "fixed", "ozone_source": "mod09cmg_nrt", "ozone_status": "Data Found", "ozone_std": 0.0005, "ozone_used": 0.44, "satellite_azimuth_angle": 0, "satellite_zenith_angle": 0, "solar_azimuth_angle": 140.929, "solar_zenith_angle": 43.335, "sr_version": "2.1", "water_vapor_coverage": 1.0, "water_vapor_mean_quality": 4, "water_vapor_method": "fixed", "water_vapor_source": "mod09cma_nrt", "water_vapor_status": "Data Found", "water_vapor_std": 0.073, "water_vapor_used": 0.51}}

Image Structure
COMPRESSION: LZW
INTERLEAVE: PIXEL
LAYOUT: COG
PREDICTOR: 2

Band 1
Description: coastal_blue
ColorInterp: undefined

Band 2
Description: blue
ColorInterp: blue

Band 3
Description: green_i
ColorInterp: undefined

Band 4
Description: green
ColorInterp: green

Band 5
Description: yellow
ColorInterp: undefined

Band 6
Description: red
ColorInterp: red

Band 7
Description: rededge
ColorInterp: undefined

Band 8
Description: nir
ColorInterp: undefined

IFD
Id Size BlockSize Decimation
0 71x173 512x512 0
`

Thanks in advance.

[vincentsarago]

@julianblue interesting, the nodata is set to 0 but there might be something going on with rio-tiler. are you able to share your file?

[julianblue]

Hi @vincentsarago ,

sure here is an example file. Is the visualisation of small files recommended through TileJSON or another approach more suitable ?
test.tif.zip