Binary representation of ASCII values
1 次查看(过去 30 天)
显示 更早的评论
I have an image of size mXn and I want to generate the 8-bit representation of ASCII value of character/pixel and want to insert that into an array. how to proceed?
0 个评论
回答(2 个)
Walter Roberson
2013-9-8
dec2bin(Value, 8) - '0'
2 个评论
Walter Roberson
2013-9-8
dec2bin(Value + '0', 8) - '0'
provided that all the entries are single digit, and that you are not wanting to put in any spaces.
If the entries might be multi-digit, then are they always the same number of digits? If not then how do you want the empty locations indicated? As if they had printable 0's at the front? Or do you want the binary of a space character inserted? Should the empty-location processing be consistent per-row, per-column, or over the whole array ?
Image Analyst
2013-9-8
We don't know what you mean. Your pixel's 8 bit values are already IN binary since it's digitized in the computer. So the only other way is to show it as a string, as Walter showed you. Since you didn't like that, I don't know what you want. Perhaps you want im2html: http://www.mathworks.com/matlabcentral/fileexchange/32273-im2html-m
2 个评论
Image Analyst
2013-9-8
That's precisely what Walter showed. Something like you showed HAS to be a string. If it were a number, say an integer, then 00110001 would really be 110,001 (one hundred ten thousand and one). I doubt that's what you want - if it is, explain why, because I see no use for that (turning 1 into 110,001, and turning 2 into 110,010, etc.) - I mean, they would not even be consecutive numbers anymore. What sense would that make???
另请参阅
类别
在 Help Center 和 File Exchange 中查找有关 Characters and Strings 的更多信息
产品
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!