  We analyse the way in which the principle that 'the whole is greater than the
sum of its parts' manifests itself with phenomena of visual perception. For
this investigation we use insights and techniques coming from quantum
cognition, and more specifically we are inspired by the correspondence of this
principle with the phenomenon of the conjunction effect in human cognition. We
identify entities of meaning within artefacts of visual perception and rely on
how such entities are modelled for corpuses of texts such as the webpages of
the World-Wide Web for our study of how they appear in phenomena of visual
perception. We identify concretely the conjunction effect in visual artefacts
and analyse its structure in the example of a photograph. We also analyse
quantum entanglement between different aspects of meaning in artefacts of
visual perception. We confirm its presence by showing that well elected
experiments on images retrieved accordingly by Google Images give rise to
probabilities and expectation values violating the Clauser Horne Shimony Holt
version of Bell's inequalities. We point out how this approach can lead to a
mathematical description of the meaning content of a visual artefact such as a
photograph.
