Final answer:
Psychologists call a vivid visual event upon waking a hypnopompic image, which is a normal part of waking up and different from hallucinations induced by drugs like hallucinogens.
Step-by-step explanation:
Upon just waking up and reporting a vivid visual event, psychologists would refer to this phenomenon as a hypnopompic image. The term refers to the transitional state of consciousness leading out of sleep, where a person might experience vivid, dream-like sensations that can include visual, auditory, or tactile hallucinations. These are distinct from hypnagogic hallucinations, which occur as one is falling asleep. Hypnopompic images are part of normal sleep physiology and should not be confused with hallucinogen-induced experiences, which can lead to more profound alterations in sensory and perceptual experiences.