Visual Perception

Let’s review

StimulusCornea

Pupil

Iris

Aqueous Humour

Vitreous Humour

Ciliary Muscles Retina Sclera

Optic nerve

1. Reception

Lens

2. Transduction

Electromagnetic energy (light)

Photochemical a.k.a. electrochemical energy (signal)

RodsCones

3. Transmission

Photochemical a.k.a. electrochemical energy (signal)

4. Organisation and Interpretation

Visual perception principles

• Usually used automatically with no conscious effort,

• but sometimes used intentionally (on purpose) by artists, designers, and advertisers!

(Play video)

1. Gestalt Principles

• Organise features of a visual scene by grouping them to perceive a whole, complete form in the simplest possible way.

1. Figure-ground organisation2. Closure3. Similarity4. Proximity

1. Figure-ground organisation

Ground

Figure

Ambiguous/Reversible figure

Camoflage

2. Closure

3. Similarity

3. Similarity

4. Proximity (or nearness)

4. Proximity (or nearness)

Let’s revise again! Gestalt Principles

• Organize features of a visual scene by grouping them to perceive a whole, complete form in the simplest possible way.

1. Figure-ground organization2. Closure3. Similarity4. Proximity