针对文本图像自动处理中对图标图形识别检索的应用需求，提出一种基于投影特征的图标图形识别检索方法。
To fulfill the application requirement to retrieve logos in automatic processing document image, a logo recognition and retrieval algorithm based on projective features was presented.
通过对制图教材中轴测投影部分的内容进行分析和研究，指出了其中有关概念定义及应用中存在的一致性问题。
Analyzing the contents of the axonometric projection in textbook of Engineering Drawing, this paper points out the consistency problems of the relevant concept definition and application.
其应用的领域对各个投影拼接单元间的颜色均匀性有着较高的要求，颜色的均匀性成为评判一个大屏幕拼接系统优劣的重要指标。
Because the good color uniformity of the multi-projector display system is highly required by many practical applications, it becomes a crucial factor to evaluate the system's performance.
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