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航拍胶片注释信息记录着航拍过程中飞机的姿态参数及相机的工作参数,其正确解译对后期的图像处理尤为重要。本文介绍了航拍胶片注释信息解译的主要步骤,包括注释信息块的定位、阈值分割、标识符分割和标识符解译,重点研究了字符的阈值分割处理方法,提出了基于CASDA与Niblack相结合的阈值分割算法。实验表明,本文算法具有较好的可操作性和适应性,能够有效地对航拍胶片注释信息进行自动解译。 更多还原

【Abstract】 In the annotation information of aerial photos exist the posture parameters of aircraft and working parameters of camera.Correct interpretation of the annotation information has an important role in image processing afterwards.In this paper,the process of annotation information in aerial photos is introduced,including location,threshold processing,character segmentation and interpretation,especially the processing of character threshold segmentation is researched,A threshold segmentation algorit... 更多还原