Import `ImageArray` class/methods from `ImageArray` package

[Artur-man]

See all related issues below, which might allow ImageArray class/methods to be outsourced from ImageArray package.

GH: https://github.com/BIMSBbioinfo/ImageArray

• Core dimensions (XYZCT) BIMSBbioinfo/ImageArray#30
• Lazy transformations on images and labels #162
• Use rome to construct/define OME images Use as.ImageArray() generic approach BIMSBbioinfo/ImageArray#41

[Artur-man]

Approach 1:

Use ImageArray as the data slot for a new sdImage container. However, this approach will confuse allready available metadata specifications of ImageArray. In fact, most stuff in ImageArray will change based on what is implemented in SpatialData

.sdImage <- setClass(
    Class="sdImage",
    contains=c("Annotated"),
    slots=list(data="ImageArray", meta="Zattrs"))

Approach 2:

sdImage inheriting ImageArray, this is an ideal solution but then now zarr attributes should be controlled by ImageArray, which is again possible since ImageArray should mimic the currently implemented ImageArray class in SpatialData.

.sdImage <- setClass(
  Class="sdImage",
  contains=c("ImageArray"))

SpatialData images are in fact OME-ZARR like images, with OME-ZARR like metadata and image/label pyramids.