detection

In other words, how can I tell if the person using my web application is on the server it resides on? If I remember correctly, PHPMyAdmin does something like this for security reasons. You can also use $_SERVER['REMOTE_ADDR'] for which IP address of the client requesting is given by the web server. $whitelist = array( '127.0.0.1', '::1' ); if(!in_array($_SERVER['REMOTE_ADDR'], $whitelist)){ // not valid } As a complement, as a function... function isLocalhost($whitelist = ['127.0.0.1', '::1']) { return in_array($_SERVER['REMOTE_ADDR'], $whitelist); } Newer OS users (Win 7, 8) may also find it

In computer vision and object detection, the common evaluation method is mAP. What is it and how is it calculated? Jonathan Quotes are from the above mentioned Zisserman paper - 4.2 Evaluation of Results (Page 11) : First an "overlap criterion" is defined as an intersection-over-union greater than 0.5. (e.g. if a predicted box satisfies this criterion with respect to a ground-truth box, it is considered a detection). Then a matching is made between the GT boxes and the predicted boxes using this "greedy" approach: Detections output by a method were assigned to ground truth objects satisfying

I want to detect a specific color say, blue, from a live video stream. I have written the following code which displays the live video stream and change it into HSV and grayscale. Since I am completely new to opencv I have no idea what to do next. Can someone complete the code for me to detect a specific color. #include<opencv\cv.h> #include<opencv\highgui.h> using namespace cv; int main(){ Mat image; Mat gray; Mat hsv; VideoCapture cap; cap.open(0); namedWindow("window", CV_WINDOW_AUTOSIZE); namedWindow("gray", CV_WINDOW_AUTOSIZE); namedWindow("hsv", CV_WINDOW_AUTOSIZE); while (1){ cap >>

I'm looking to extract pitches from a sound signal. Someone on IRC just explained to me how taking a double FFT achieves this. Specifically: take FFT take log of square of absolute value (can be done with lookup table) take another FFT take absolute value I am attempting this using vDSP I can't understand how I didn't come across this technique earlier. I did a lot of hunting and asking questions; several weeks worth. More to the point, I can't understand why I didn't think of it. I am attempting to achieve this with vDSP library. It looks as though it has functions to handle all of these

nothing more frustrating than to see your code crash in the debugger on a method which exceptionned and you didn't try/catch it. Is there an easy way to scan through your sources and tag all functions which can potentially throw exceptions? Does the build in visual assist have some hidden option to colour these functions in a specific color? thanks R I think redgate have some a tool for this "Exception Hunter" They charge for it after a trial. http://www.red-gate.com/products/Exception_Hunter/index.htm All code but the most trivial could throw exceptions (out of memory, at the very least). You