15 years ago they were the next big revolution in image coding. Then people made codecs based on them, which never beat DCT codecs perceptually. They did well i

15 years ago they were the next big revolution in image coding. Then people made codecs based on them, which never beat DCT codecs perceptually. They did well in PSNR though, since they blurred instead of blocked. Of course, their main problem was that fine detail wound up in every decomposition band, so you had to code it multiple times and no one came up with good enough prediction to offset that. Lapped DCTs shouldn't have that issue any more than traditional DCTs.