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- W2299151223 abstract "This chapter covers some basic aspects of the fundamentals of the human visual perception. Given the enormity of the subject, we will only give a very limited account of this huge area of intellectual activity. We will first discuss the structure of the visual system that is necessary to understand the functional processing of visual information and its limitations. Next, we will elaborate on some classic visual psychophysical results that delineate the limits of detection and discrimination. With these basics, we will introduce the reader to three important streams of information processing pertinent to lighting and display technologies, namely, spatial vision, flicker fusion, and color vision. We do not discuss many aspects of visual perception such as binocular visual perception, shape and form recognition, face recognition, etc. due to space constraints. Good overviews and detailed discussions of various aspects of visual perception can be found in a number of books, e.g., Cornsweet (1970), Schwartz (2010), Palmer (1999), Norton et al. (2002), and Werner and Chalupa (2013), and Chalupa and Werner (2003) or in the chapter by Lakshminarayanan and Raghuram (2003). Anatomy of the Visual System The enormous amount of visual information in the world is contained in the light reaching the eye. What we perceive and howwe perform depend on the information that is processed by each successive structure of the visual system. In this section, we will traverse the anatomy of the visual system as the light stimuli would and will elaborate its structural and functional aspects. For more details, please see Oyster (1999). The eye is embedded in a protective framework of bones and connective tissues called the orbit. At birth, the average axial length (distance between cornea and retina) of the eye is about 16.8 mm and grows to an average length of 24.5–25 mm by adulthood and remains fairly constant thereafter (Gordon and Donzis 1985). The first part of the visual system consists of structures that remain transparent to enable maximum, undisrupted transmission to light. These structures, namely, the cornea, pupil, lens, and the humors (aqueous and vitreous) of the eye, collectively determine the optics of the eye. The quality of the image formed on the retina (which is the neuronal layer) greatly depends on the optical properties of the eye. A good book on the optics of the eye is by Atchison and Smith (2000). The optics of the eye is analogous to that of a camera in terms of its image-forming properties. This analogy holds good until we reach the neuronal layer, the retina, where information encoding gets complex and interesting. A schematic cross section of the eye is given in Fig. 1. *Email: zz.maha@gmail.com Handbook of Advanced Lighting Technology DOI 10.1007/978-3-319-00295-8_46-1 # Springer International Publishing Switzerland 2015" @default.
- W2299151223 created "2016-06-24" @default.
- W2299151223 creator A5047243546 @default.
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- W2299151223 date "2017-01-12" @default.
- W2299151223 modified "2023-09-26" @default.
- W2299151223 title "Human Vision and Perception" @default.
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