Uwarunkowania fizjograficzne i techniczne wpływające na percepcję obrazu obserwowanego na ekranie monitora

• Autorzy: Pyka K.

Warianty tytułu

EN

Physiological and technical conditions, influencing perception of the monitor picture

• Języki publikacji: PL

Abstrakty

EN

The study presents an analysis of factors forming the perception of the computer monitor picture. The subject is important from the GIS point of view, especially the internet geographic information services. The inspiration for taking up this subject are the experiences gathered for nearly two years of functioning service: "Bird.s eye view map" being a part of the "Wrota Małopolski" portal. The study describes the crucial factors shaping the Human Visual Perception: colour sensitivity, stimulus sensitivity, threshold contrast, alternating reaction to contrast depending on spatial frequency. Most of the attention has been given to the CSF - Contrast Sensitivity Function of the human eye. Also, the law of logarithmic eye reaction to luminance changes has been mentioned. The said laws have been illustrated graphically and registered as mathematic formulas.A further part of the study characterizes a problem of visualization of the picture in the monitor. Using sample parameters of modern monitors, the rules of calculating maximum projected frequency has been presented. Furthermore, the changes of picture frequencies depending on the observation distancechanges were described.

Słowa kluczowe

PL

obraz; kontrast; luminancja; czułość

EN

image; contrast; luminance; sensitivity

• Wydawca: Polskie Towarzystwo Informacji Przestrzennej
• Czasopismo: Roczniki Geomatyki
• Rocznik: 2005
• Tom: T. 3, z. 1
• Strony: 131--137
• Opis fizyczny: Bibliogr. 12 poz.

Twórcy

autor

Pyka K.

• Wydział Geodezji Górniczej i Inżynierii Środowiska, Akademia Górniczo-Hutnicza

Bibliografia

• 1. Campbell F.W., Kulikowski J.J., 1966: Orientational selectivity of the human visual system. J. Physiol.187, 1966.
• 2. Grainger E.M., Cupery K.N., 1992: An optical merit function (SQF) which correlates with subjective image judgments, Photographic Science and Engineering, Vol 16, #3.
• 3. Hood D., Finkelstein, M., 1986: Sensitivity to light. In Handbook of Perception and Human Performance: 1. Sensory Processes and perception. Wiley, New York, K. Boff, L. Kaufman, and J. Thomas, Eds., vol. 1.
• 4. Hurvitch L., Jameson D. 1966: The perception of brightness and darkness. Allyn and Bacon, Boston 1996.
• 5. Larson G.W., Rushmeier H., Piatko C., 1997: A Visibility Matching Tone Reproduction Operator for High Dynamic Range Scenes. Technical Report LBNL-39882, Lawrence Berkeley National Laboratory, March 1997.
• 6. Mannos J.L., Sakrison D.J., 1974: The Effects of a Visual Fidelity Criterion on the Encoding of Images. IEEE Transactions on Information Theory, pp. 525-535, Vol. 20, No 4, (1974).
• 7. Matkovic K.. 1998: Tone Mapping Techniques and Color Image Difference in Global Illumination. Ph. Thesis, Vienna Technical University 1998.
• 8. PN-ISO 31-6:2001: Norma Wielkości fizyczne i jednostki miar. Część 6: Światło i pokrewne promieniowania elektromagnetyczne.
• 9. Schieber F., 1992: Aging and the senses. [In:] J.E. Birren, R. Sloan & G. Cohen (Eds.), Handbook of mental health and aging. New York: Academic Press.
• 10. Ward G., 1994: A Contrast-Based Scalefactor for Luminance Display. Graphics Gems IV, Ed. by P.S. Heckbert, pp. 415-421, 1994.
• 11. Wyszecki G., Stiles W.S., 1982: Color Science, Concept and Methods, Quantitive Data and Formulae. John Wiley and Sons ONC NY 1982.
• 12. Wyszecki G., 1986: Color appearance. In K. R. Boff, L. Kaufman, & J. P. Thomas (Eds.), Handbook of perception and human performance,