Bing has explained about its research and development into "deep multimodality models in image search ranking stack."

These deep learning models, Bing says, "improve image search results event further."

If you want to get better results from Bing's image search for your site, it's really worthwhile reviewing these developments.

[blogs.bing.com...]

Bing Visual Search [bing.com...]
Bing Image Search [bing.com...]