DocumentCode :
2061913
Title :
Auto flash performance test using exposure accuracy
Author :
Park, Kwang Yeol ; Park, Hyung Ju ; Son, Young Ho ; Har, Dong Hwan
Author_Institution :
Grad. Sch. of Adv. Imaging Sci., Chung-Ang Univ., Seoul
fYear :
2008
fDate :
14-16 April 2008
Firstpage :
1
Lastpage :
4
Abstract :
General auto flash focuses on representing the actual object luminance depending on the object´s luminance condition, that is, whether it is dark or bright. Although it is an intelligent development, it is hard to find a standard for measuring auto flash performance. In this study, we present a new auto flash performance measurement. For auto flash performance evaluation, we select the exposure accuracy that affects image quality when exposure failure occurs. For exposure accuracy, these are the methods of measurement. At first, we select the auto flash exposure accuracy that depends on object distance. It evaluates when auto flash measures the equivalent luminance of the same object depending on diverse object distance within the auto flash valid range. The next is auto flash accuracy that depends on object luminance. And lastly, a test of auto flash accuracy that depends on ambient lighting is conducted. Auto flash can recognize ambient lighting and measure the accurate object luminance.
Keywords :
brightness; digital photography; lighting; photometry; ambient lighting; auto flash performance test; exposure accuracy; flash photography; image quality; object luminance condition; Area measurement; Data analysis; Digital cameras; ISO standards; Lenses; Manufacturing; Measurement standards; Power supplies; Standards development; Testing; Auto flash; Digital camera; Exposure accuracy; Flash photography; Luminance;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Consumer Electronics, 2008. ISCE 2008. IEEE International Symposium on
Conference_Location :
Vilamoura
Print_ISBN :
978-1-4244-2422-1
Electronic_ISBN :
978-1-4244-2422-1
Type :
conf
DOI :
10.1109/ISCE.2008.4559453
Filename :
4559453
Link To Document :
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