{"id":3601,"date":"2015-06-02T14:35:20","date_gmt":"2015-06-02T06:35:20","guid":{"rendered":"http:\/\/www.appliedpsyj.org\/journal\/?p=3601"},"modified":"2015-06-02T14:35:29","modified_gmt":"2015-06-02T06:35:29","slug":"gamma-correction-for-monitors-used-in-psychological-experiments","status":"publish","type":"post","link":"https:\/\/www.appliedpsyj.org.tw\/journal\/?p=3601","title":{"rendered":"Gamma Correction for Monitors Used in Psychological Experiments"},"content":{"rendered":"

I-Ping Chen<\/strong>
\nCenter for General Education National Yang-Ming University
\nSu-Ling Yeh<\/strong>
\nDepartment of Psychology\u00a0National Taiwan University<\/p>\n

Color monitors are widely used by experimental psychologists as a major visual display device. There is an inherent nonlinear output property of the monitor that can greatly affect the results of experiments where the intensity level or contrast of the stimuli is of any significance. Measures taken to ameliorate this problem have been generally called \u201cGamma correction\u201d in engineering fields. The physical cause of such nonlinearity, together with the correction procedures by software to the precision for experimental purposes are discussed in this article. Downloadable software tools and instructions are also provided.<\/p>\n

Keywords: Monitor, Gamma correction, video memory, color palette, color lookup table<\/p>\n","protected":false},"excerpt":{"rendered":"

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