图像处理技术在阅卷系统中的应用



摘要: 通过对答题卡特点的分析, 设计了如何判别图像是否为答题卡, 研究并改进了灰度处理算法去除了彩色图像的颜色对图像识

别的干扰, 以便使获得的数据根容易处理。在图像校正部分分析了图像偏转的现象, 并根据特征点采集值的不同设计了倾斜角度计算的算法, 设计了针对答题卡的图像旋转的算法, 对发生偏转的图像进行适当的调整, 以便满足评分判卷的要求

关键词: 图像处理 阅卷系统 答题卡-Image processing technology in the Marking System

Abstract: The analysis of the characteristics of the answer sheet, an image designed to determine whether the answer sheet, research and improved gray-scale color image processing algorithms in addition to the color of the image recognition of the interference, The data obtained so easy to deal with the root. In the image correction section analysis of the image deflection phenomenon and, based on feature points collected on the value of design angle calculation algorithm, designed for the answer card, image rotation algorithm, the image of the deflected appropriate adjustments to Rating graders meet the requirements of key words: image processing　scoring system　answer sheet