They say the answer is "yes". It's even nominally offered as a feature in, e.g. Canon's RAW processing tool (called "DLO") Unfortunately, in practice it seems

They say the answer is "yes". It's even nominally offered as a feature in, e.g. Canon's RAW processing tool (called "DLO") Unfortunately, in practice it seems to behave more like smart sharpening than a discrete reverse convolution math op.