High Frame Rate Psychophysics: Experimentation to Determine a JND for Frame Rate
| Autor: | Elizabeth DoVale |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
business.industry
Just-noticeable difference media_common.quotation_subject 020207 software engineering 02 engineering and technology Frame rate Stroboscopic effect Stroboscope Motion (physics) Perception 0202 electrical engineering electronic engineering information engineering Media Technology Psychophysics 020201 artificial intelligence & image processing Computer vision Point (geometry) Artificial intelligence Electrical and Electronic Engineering business Mathematics media_common |
| Zdroj: | SMPTE Motion Imaging Journal. 126:41-47 |
| ISSN: | 2160-2492 1545-0279 |
| DOI: | 10.5594/jmi.2017.2749919 |
| Popis: | In past research at the Rochester Institute of Technology (RIT), a temporal texture space was defined. It was used to classify what attributes contribute to the perceived motion quality of stroboscopic reproductions. One of these attributes was determined to be the content’s captured and displayed frame rate. Using knowledge from this and other past frame rate research and psychophysics, a comprehensive experiment was setup to see if a just noticeable difference (JND) could be found for changes in frame rate. Thresholds were tested starting with base conditions of 24, 48, and 72 frames/sec due to their significance to the motion picture industry. After a verification pilot study, 77 observers in total participated in the experiment. The collected data point to a resulting JND threshold between 26 and 28 frames/sec for the 24 frames/sec test point, but a significantly noisier signal was determined for both the 48 and 72 frames/sec test points. Explanation for this nosier signal could be a lack of consistent detectability in human perception at these higher frame rates. This experiment is presented as one in a series of studies into stroboscopic motion perception at RIT. |
| Databáze: | OpenAIRE |
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