Read for commercial usage?

[shipingli]

I see a lot of interesting apps here, however most of them are lacking documentation, say the usage, building environment, building process, working environment etc., make it a bit hard to follow.

I wonder if Halide is ready for commercial usage? Say building into Android phones to help optimizing image processing? I mean build "into" phone, maybe in HAL layer, not just apks.

Anyone has knowledge on this?

Thanks.

[abadams]

The Google camera app uses Halide for its imaging pipeline, fwiw.

[shipingli]

Where can I find more detail information on Google Camera? Is it open source?

[abadams]

It is not, unfortunately. The paper at hdrplusdata.org has details on the algorithms, but doesn't go into build infrastructure at all. Basically we use a bunch of Generators to output static libraries for all the pieces of the imaging pipeline. These are strung together with C++ to make an arm android shared library that the camera app links to. It's all built using the bazel support in the repo (see bazel and apps/bazeldemo).

[shipingli]

Thanks. We developed a bunch of algorithm to improve camera qualify on Android phones, but need to optimize the performance. These are mostly real time or near real time. When user takes a picture, the algorithm will be used to do enhancement, and than save the picture taken in to the phone automatically (For example, multi-frame HDR). These optimization may use ARM, NEON, Hexagon, GPU on the phone, We are thinking if Halide can help to improve the performance and reduce the implementation complexity.

[headupinclouds]

FWIW, this looks like an independent implementation of the HDR+ pipeline (using Halide): https://github.com/timothybrooks/hdr-plus