dataset
https://atmarkit.itmedia.co.jp/ait/spv/2011/11/news027.html
Open Image dataset
The annotations are licensed by Google LLC under CC BY 4.0 license. The images are listed as having a CC BY 2.0 license.
Note: while we tried to identify images that are licensed under a Creative Commons Attribution license, we make no representations or warranties regarding the license status of each image and you should verify the license for each image yourself.