A novel evaluation study of the most appropriate round function for nearest neighbor image interpolation is presented. Evaluated rounding functions are selected among the five rounding rules defined by the Institute of Electrical and Electronics Engineers IEEE 754-2008 standard. Both full- and no-reference image quality assessment metrics are used to evaluate the influence of rounding functions on nearest neighbor interpolation image quality. The concept of the number of occurrences is used to determine the percentage of achieved occurrences, which is also equivalent to the sample proportion percentage used to calculate the margin of error. Inferential statistical analysis is used to deduce from a small number of images and draw a conclusion of the performance of each rounding function on a big number of images. Experimental results are provided to demonstrate with 95% confidence the minimum performance percentage of the most appropriate rounding function.

中文翻译：

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最近邻插值中舍入函数的评估

提出了一种最适合最近邻图像插值的圆形函数的新评估研究。评估的舍入函数是从电气和电子工程师协会 IEEE 754-2008 标准定义的五个舍入规则中选择的。全参考和无参考图像质量评估指标均用于评估舍入函数对最近邻插值图像质量的影响。出现次数的概念用于确定达到的出现次数的百分比，也相当于用于计算误差范围的样本比例百分比。推论统计分析用于从少量图像中进行推论，并得出每个舍入函数在大量图像上的性能的结论。