Appose is a library for interprocess cooperation with shared memory. The guiding principles are simplicity and efficiency.
This repository relies on the following PRs:
net.imglib2.appose.NDArrayUtils contains static methods for working with Appose NDArray, most importantly:
NDArray ndArray = NDArrayUtils.asNDArray(img);creates a NDArray with shape and data type corresponding to the shape and
ImgLib2 type (must be NativeType) of the image.
This can be put into Appose Task inputs.
See these examples.
net.imglib2.appose.SharedMemoryImg<T> is a Img<T> implementation that wraps an ArrayImg that wraps a NDArray.
If a SharedMemoryImg is passed to NDArrayUtils.asNDArray(img) then the wrapped NDArray is returned directly. So, no copying.
Create a SharedMemoryImg<T> with
Img<FloatType> img = new SharedMemoryImg<>(new FloatType(), 4, 3, 2);Wrap it around an existing NDArray using
NDArray ndArray;
Img<FloatType> img = new SharedMemoryImg<>(ndArray);(The SharedMemoryImg will have pixel type corresponding to the
ndArray.dType(). Here we assume that the dType is FLOAT32, so we assign it
to Img<FloatType>.)