question

BW-5825 avatar image
0 Votes"
BW-5825 asked DuncanLawler-3885 commented

Resolving Bing Aerial zoom disparities

Hi we're an enterprise Bing imagery customer. The imagery appears very different at different zoom levels, especially around level 14+ where satellite imagery gives way to aerial imagery.

My question is, does Bing offer an imagery set where the lower zooms are entirely derived from the maximum zoom level? In other words, if Bing maximum zoom is about level 20, then an imagery set where each level 19 tile is derived from the four lower level 20 tiles, and each level 18 tile is derived from the four lower level 19 tiles, etc.. Such a dataset would of course look perfectly smooth when zooming, i.e. without all the hard visual jumps in quality, tone, etc. that occur.

Regards
BW

windows-maps
5 |1600 characters needed characters left characters exceeded

Up to 10 attachments (including images) can be used with a maximum of 3.0 MiB each and 30.0 MiB total.

1 Answer

IoTGirl avatar image
1 Vote"
IoTGirl answered DuncanLawler-3885 commented

The fast answer is no and that is "By design". The longer answer is related to the color issue you mention. While a solution like you describe might resolve the vertical break between L13 and L14, it would introduce horizontal breaks at < L14 because the L14+ imagery is also not perfectly color-balanced worldwide. The result would be visually worse at lower zoom levels where wider areas of imagery can be seen.

· 2
5 |1600 characters needed characters left characters exceeded

Up to 10 attachments (including images) can be used with a maximum of 3.0 MiB each and 30.0 MiB total.

Hi IoTGirl thanks for the response. That certainly makes sense, but it begs the question, does Bing offer as well an imagery set where the lowest zoom level is colour balanced worldwide? Something along the lines of (https://www.maxar.com/products/imagery-basemaps). That would not only improve the lowest level when panning but also would allow a smooth imagery set to be built for all upper levels up to 0.

0 Votes 0 ·

The default Bing imagery set already does what you describe. Levels 1-12 are from a single source that has been globally color balanced world-wide and should have no significant seams. Only the higher resolution imagery at L13-20 will have seams as it was collected at different times with different conditions and sensors. If you stick to L1-12 you'll always have consistent color balance.

2 Votes 2 ·