Coefficient blocks read out of an entropy coded stream, which a scale cannot lower.
Samples the decoder produced. Against sourceSamples this is the reduction.
Samples handed to an encoder.
Macroblocks put through a loop filter.
Macroblocks reconstructed, for the codecs built out of them.
Full passes made over an image.
Samples a resampler wrote.
transformSamples / transforms: 64 for a full block, 4 for a true quarter scale.
Progressive JPEG scans stepped over rather than entropy decoded.
Non-zero only where a component's transform reads the DC term alone, which is a scale denominator of eight for luma. Zero on a baseline file, which has one scan carrying everything and so has nothing to skip.
Samples the source carries, from its header.
Inverse transforms performed.
Samples those transforms wrote.
What an operation actually did, as counted by the module rather than claimed by its name.
See TinyImgModule.measure.