Setting up IIIF source layer projection for map with local coordinate system

[dersmon]

I am a OpenLayers newbie and got the example working without any problems. This enables us to use OpenLayers as a simple IIIF image viewer, which is nice.

Now I am trying to use multiple the IIIF source layer as map background in my application, but am struggling to get it implemented. I am using Cantaloupe to serve JPEG2000 files. The project I am working on uses a local coordinate system, and I pull coordinates for each image from the database.

The IIIFInfo's getTileSourceOptions() returns:

{
  "url": "(...).jp2",
  "version": "version3",
  "size": [
    10682,
    9558
  ],
  "sizes": [
    [
      83,
      75
    ],
    [
      167,
      149
    ],
    [
      334,
      299
    ],
    [
      668,
      597
    ],
    [
      1335,
      1195
    ],
    [
      2671,
      2390
    ]
  ],
  "format": "jpg",
  "supports": [
    "regionByPx",
    "regionSquare",
    "regionByPct",
    "sizeByW",
    "sizeByH",
    "sizeByPct",
    "sizeByConfinedWh",
    "sizeByWh",
    "baseUriRedirect",
    "canonicalLinkHeader",
    "cors",
    "jsonldMediaType",
    "mirroring",
    "profileLinkHeader",
    "regionByPct",
    "regionByPx",
    "regionSquare",
    "rotationArbitrary",
    "rotationBy90s",
    "sizeByConfinedWh",
    "sizeByH",
    "sizeByPct",
    "sizeByW",
    "sizeByWh"
  ],
  "quality": "default",
  "resolutions": [
    128,
    64,
    32,
    16,
    8,
    4,
    2,
    1
  ],
  "tileSize": [
    512,
    512
  ]
}

While the local coordinates according to the database are as follows:

(...)
"georeference": {
      "bottomLeftCoordinates": [
        353.28315540660014,
        847.8808597099
      ],
      "topLeftCoordinates": [
        1162.0738048467,
        847.8808597099
      ],
      "topRightCoordinates": [
        1162.0738048467,
        1751.7934815232002
      ]
    },
(...)

What is missing is a projection (?) from Image width/height to the local coordinate system. Has anyone some directions on how to define the project?