Matthew Brown wrote:
Campbell Ritchie wrote:It seems weird that you should try putting something in an image which refers to water turning in a pipe. Which seems to be what I found when I looked for it.
It's not that specific. Curl is a general differential operator on any vector field. I just find thinking about fluid flow to be one of the easiest ways to understand what it means, because there there's a nice physical interpretation.
It also crops up in Maxwell's equations, describing the relationship between electricity and magnetism:
(E is electric field, B is magnetic field, and the "Delta x" part is the usual notation for curl).
Matthew Brown wrote:I don't know anything about image processing, but in general the curl of a vector field is a measure of the local rotation of the field.
For example, I used it a lot in fluid mechanics. If you have a function giving the velocity of the fluid at any point, then the curl of that gives you the "vorticity" - the amount the fluid is swirling at that point. A whirlwind or tornado is an example of a high concentration of vorticity.
I'm not quite sure what that would correspond to in an image, but it would be something to do with rotation.
Campbell Ritchie wrote:The only CURL I could find on Wikipedia was this. I don’t know how many mathematicians we have who are regular readers here, because they might be the only people able to help. If you post the same question elsewhere, be sure to tell people on both website about the cross-post.
Tim Moores wrote:I have done a fair amount of image processing work, and have no idea what you mean by "curl of an image"; where did you see that? In the computing domain, "curl" is a command line tool to access a particular URL.
Madhan Sundararajan Devaki wrote:One more thing you need to remember, is that MS-ACCESS has its own extensions in addition to the standard ANSI SQL, hence, some DML statements may not work. For example, alter database, etc... Please check MicroSoft site for additional official information on this.
Madhan Sundararajan Devaki wrote:MS-ACCESS is a product from MicroSoft.
All MicroSoft Databases can be accessed by creating a DSN
To access the MS-ACCESS database, please create a System DSN and use JDBC-ODBC method to use it in Java.
Campbell Ritchie wrote:Don't know myself, sorry.
Campbell Ritchie wrote:System#getProperty(String). If you can't get anything useful with "encoding" try System.getProperties and iterate through the Enumeration it returns.
You should be able to select the database's properties in MySQL but I can't remember how.
Pat Farrell wrote:Be careful, getting the information is restricted by some popular operating systems, including Android and OS-X. And also many Linux distributions. Once upon a time, the official command to find this was "netstat -r" but these days it varies. Sometimes "route" will give it, but nothing is guaranteed.
Obviously your use of "cmd" in the command is Windows specific.