OpenStreetMap 開放街圖
I was using the default Bing maps satellite imagery, until I found “Background Settings” (B) on the right toolbar. For Ojai, CA the Mapbox Satellite imagery is much more clear; however, the alignment can be slightly different for roads and buildings, compared with the default Bing maps imagery.
討論
由 Warin61 於 2018年07月 2日 21時33分 發表的評論
Which imagery is ‘best’ will depend on where you are in the world. And ‘best’ may change depending on what is wanted - most up to date, best resolution or best alignment. You certainly need to use more that one image, best if you look at all of them for each new area so you can asses them and make your own choice.
由 Glassman 於 2018年07月 3日 00時10分 發表的評論
You can also adjust the imagery offset. At the bottom of the background settings on the toolbar is a tool to adjust the image. Ideally you would have a good reference point to adjust the imagery with. If there are many existing objects mapped, you can use them as a reference. (That doesn’t make the offset correct, just matches what was used before. I would use extreme caution before attempting to move mapped objects to new imagery.)
由 Derek-S 於 2018年07月 3日 05時36分 發表的評論
Thanks :-]
由 Hjart 於 2018年07月 3日 08時48分 發表的評論
Make sure to compare with any gps tracks found in the area to determine which imagery might be better aligned. Not to say that gps tracks are necessarily perfect, but, especially if there are several, they may nevertheless give valuable hints.