期刊名称：International Journal of Computer Science and Security (IJCSS)
电子版ISSN：1985-1553
出版年度：2011
卷号：5
期号：5
页码：425-432
出版社：Computer Science Journals
摘要：The study expands upon previous work in format extension. The initial research purposed extra space provided by an unrefined format to store metadata about the file in question. This process does not negatively impact the original intent of the format and allows for the creation of new derivative file types with both backwards compatibility and new features. The file format extension algorithm has been rewritten entirely in C++ and is now being distributed as an open source C/C++ static library, roughdraftlib. The files from our previous research are essentially binary compatible though a few extra fields have been added for developer convenience. The new data represents the current and oldest compatible versions of the binary and values representing the scaling ratio of the image. These new fields are statically included in every file and take only a few bytes to encode, so they have a trivial effect on the overall encoding density.
