동영상의 기술요소가 시각적 인지반응에 미치는 영향에 관한 연구(2)

This paper is the second part connected to the first part of the same title inserted in the Korea Science Art Forum Vol.14 and includes the introduction of the first part repeatedly in the body for reader"s convenience. The hypotheses suggested in the first part are as follows. Hypothesis 1: High-speed frame rate will have a beneficial influence on functional visual cognitive response of audience. Hypothesis 2: High-speed frame rate will have a partial negative influence on emotional visual cognitive response of audience. Hypothesis 3: The absence of motion blur will make audience feel uncomfortable, having a negative influence on easement among emotional visual cognitive response of audience but will give them a sense of vividness. As the control variables in three experiments that used live moving image as experiment materials were not smoothly controlled, to increase accuracy of the results, two main experiments and one supplementary experiment were conducted by using 3D moving image in which all control variables can be controlled. Experiment 4 used a static 3D moving image where a character does stretching in an urban street and frame rate and motion blur were used as independent variables. The results were not very different from experiments with live moving image, and verified hypothesis 1 but not hypothesis 2. For the hypothesis that absence of motion blur will have a negative effect on comfort, it was only valid for 24 frames, while the hypothesis that it will have a positive effect on clarity was validated. For experiment 5, the character and camera movement was drastically changed and the rest was the same as in experiment 4. The overall results were similar to those of experiment 4, and, unlike experiment 4 where hypothesis 3 about motion blur was validated only in part, hypothesis 3 was completely validated. In experiment 6, which was conducted to validate and supplement the effect of frame rate and motion blur, the moving image used in experiment 5 was used and color grading was used as an independent variable. As a result, unlike in the previous 5 experiments, color grading had a negligible effect on functional vision but a substantial effect on emotional vision. To discuss the overall results, high speed frame rate of 60 frames has a very positive effect on functional vision, and, contrary to expectation, does not have a significantly negative effect on emotional vision. Therefore, it may be an anachronistic prejudice that the traditional 24 frame is more sophisticated than high speed frame rate.