立体图像质量主观评价被试数量及数据的确定

Subjective quality assessment of stereo image plays an important role to measure the accuracy of the objective evaluation methods of stereo image. To get more accurate result, we propose a new method to determine the number of observers and select the experimental data in subjective assessment. The number of observers is determined though preprocessing the data and reversing confidence interval formula; the experimental data is selected according to the standards of subjective image quality evaluation and the Grubbs test. The experimental result demonstrates that the proposed method is feasible, the algorithms not only ensure the reliability of experimental result but also reduce the experimental complexity and save the experiment cost. Meanwhile，from the experimental result we can know the influence between the compression and the MOS(Mean Opinion Score),as well as the relationship between the quality of images and the number of observers.