Re: [january-dev] January usage on Android?

[<erwindl0@xxxxxxxxx>]

Thanks Matt, Peter for the rapid responses.

 

My colleague Yannick De Visscher is already trying some things along the track mentioned by Peter.

And it seems that Android is no problem (still need to deploy to an actual device though).

Now for the actual logic/slicing... ;-)

 

cheers

erwin

 

 

From: january-dev-bounces@xxxxxxxxxxx <january-dev-bounces@xxxxxxxxxxx> On Behalf Of Peter.Chang@xxxxxxxxxxxxx
Sent: Tuesday, 25 June 2019 10:45
To: january developer discussions <january-dev@xxxxxxxxxxx>
Subject: Re: [january-dev] January usage on Android?

 

Hi Erwin,

 

We don’t have anything to handle byte buffers directly. You would need to copy out the bytes to an array and then create a CompoundByteDataset (shape = [rows, columns], elements per item = 4) from that.

 

If you want to wrap a ByteBuffer as an IDataset to handle the slicing, then I could help you with the indexing calculations.

 

Peter

 

From: january-dev-bounces@xxxxxxxxxxx <january-dev-bounces@xxxxxxxxxxx> On Behalf Of erwindl0@xxxxxxxxx
Sent: 25 June 2019 09:23
To: january-dev@xxxxxxxxxxx
Subject: [january-dev] January usage on Android?

 

Hi January team,

 

For an Android app we need to do some "simple" image processing to manipulate the camera video stream, which is really a sequence of RGBA frames.

It appears that the Android "virtual display ImageReader" offers the video stream as a bytebuffer on which a kind of "shape" can be defined in a similar way as January represents its DataSets if I remember correctly.

 

One particular case is where certain mobile devices appear to pass more "pixels" than the actual camera resolution.

I.e. they add a black area to the right in the camera image for some unimaginable reason, so we want to remove that.

 

I think we could use January slicing for that.

So the question is, would January Dataset construction (from a bytebuffer) and slicing be useable in an Android app?

 

thanks

erwin

 

 

 

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