The text segment also maps your binary file in memory, but writes to this area earn your program a Segmentation Fault.
文本段同样会将二进制文件映射到内存，但文件映射区域的写入操作只能以程序收到段错误而告终。
Assumptions: you may in addition change the text segment of your binary.
假设：你可能除了改变文本段的二进制。
The use of moments for image analysis is straightforward if we consider a binary or gray level image segment as a two-dimensional density distribution function.
若把二值图或灰度图看作是二维密度分布函数，就可把矩技术应用于图像分析中。
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