Shameless plug (I'm head of product at Algorithmia): we've written a lot of algorithms ourselves including many computer vision algos [1] that are published publicly for use. The underlying platform at Algorithmia is able to run production models at scale and puts a simple REST API in front of all of the algorithms so developers can easily call them from your production apps. The algorithms you see in the marketplace are publicly published but the platform runs private algorithms for software teams as well. Check it out: [2]
[1]: https://algorithmia.com/tags/computer-vision [2]: https://algorithmia.com