Does anyone know of any image compression techniques with the following characteristics:
- streaming - I want to compress on the fly, pixel-by-pixel.
- low-memory overhead - I can afford to buffer a single line, but ideally not even that.
- no dynamic dictionaries
- "real-world" images only, so performance on "nasty cases" like chequerboards is not important
- 2-3x compression (5x-10x would be even better, but that's asking a lot I know)
- can operate on 10-16 bit pixels (depending on my camera)
My images will be ~1k pixels wide, with pixel rates of ~20Mpix/sec. The pixel depth will be something between 10 and 16 bits per pixel (depending on the choice of camera). Assume sub-16-bit pixel widths would be represented within a 16-bit word for now, rather than needing to be extracted from a continuous bit-stream.
Some form of delta+arithmetic coding perhaps?