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中文摘要：
IQA（Image Quality Assessment图像质量评价）是一种测评数字化文献质量优劣的客观方法.文章利用IQA对不同扫描模式、不同扫描分辨率获得的数字化文献分别进行图像质量测值和文字识别错误测值,结合图表对测值进行了波动分析.研究发现,数字化文献的质量高低并非完全取决于扫描分辨率,在常规的黑白、4 阶灰度扫描模式下,并非扫描分辨率越高,图像质量就越好,而是当分辨率取200-400 DPI时获得的图像质量测值最低而图像质量最好.基于测值的波动分析,进一步给出了文献数字化在不同模式下比较理想的扫描分辨率范围.
英文摘要：
IQA is an objective method to evaluate the quality of digital documents. In this paper, IQA is usedto measure the image quality and text recognition error in different scanning modes and different scanningresolutions. The study finds that the quality level of digital documents is not completely determined by the scanresolutions. In the conventional scanning mode of black-white and fourth order gray-scale, the higher scanresolution doesn’t lead to the better image quality. The best image quality is obtained when its measured value isthe lowest with the 200-400 DPI resolution. Based on the analysis of the fluctuation of the measured value, thepaper further gives the ideal scanning resolution range of the literature digitization in different modes.
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