opticl

Images are stored directly as Common Lisp arrays, allowing for zero-abstraction pixel access and efficient memory use, as demonstrated in the non-consing loop example.

Leverages SBCL's compiler with type declarations to inline functions, enabling fast, non-consing pixel operations—shown in the timing example with 6ms for full image processing.

Uses Common Lisp's multiple values to represent pixel channels, avoiding heap allocation for color data and streamlining operations like pixel reading and writing.

Reads and writes PNG, JPEG, TIFF, and other formats via established libraries, though this comes with external dependencies managed through Quicklisp.