I've been working on DCV for some years. Recently, DCV has started to be used by some projects, such as etichetta[1]. Even though it's still far from perfect, I think DCV deserves a new version. Existing unit tests pass. New ones are also necessary. Docs are produced for most functions.
Here it is
https://github.com/libmir/dcv/releases/tag/v0.4.0
And here are some fun examples:
panorama stitching:
https://github.com/libmir/dcv/tree/master/examples/imagestitchinghomography
Binary region analysis:
https://github.com/libmir/dcv/tree/master/examples/measure
Video input:
https://github.com/libmir/dcv/blob/master/examples/video/source/app.d
Basic image manipulation:
https://github.com/libmir/dcv/blob/master/examples/imgmanip