  Imaging in real time the complete dynamics of a process as fundamental as
photoemission has long been out of reach due to the difficulty of combining
attosecond temporal resolution with fine spectral and angular resolutions.
Here, we achieve full decoding of the intricate angle-dependent dynamics of a
photoemission process in helium, spectrally and anisotropically structured by
twophoton transitions through intermediate bound states. Using spectrally- and
angularly-resolved attosecond electron interferometry, we characterize the
complex-valued transition probability amplitude towards the photoelectron
quantum state. This allows reconstructing in space, time and energy the
complete formation of the photoionized wavepacket.
