tracking

问题 I'm working on an IPhone robot that would be moving around. One of the challenges is estimating distance to objects- I don't want the robot to run into things. I saw some very expensive (~1000$) laser rangefinders, and would like to emulate one using iPhone. I got one or two camera feeds and two laser pointers. The laser pointers are mounted about 6 inches apart, at an angle The angle of lasers in relation to the cameras is known. The Angle of cameras to each other is known. The lasers are

问题 I am trying to track multiple objects with different color at the same time via a single web cam. Now I can do that for single color with single threshold: IplImage* GetThresholdedImage(IplImage* imgHSV) { IplImage* imgThresh=cvCreateImage(cvGetSize(imgHSV),IPL_DEPTH_8U, 1); cvInRangeS(imgHSV, cvScalar(170,160,60), cvScalar(180,2556,256), imgThresh); return imgThresh; } I'm looking for some hints to do various threshold. Also if its possible, how many windows does it require? Do i need to

问题 I need to integrate fedex api in my site. How can i get a new tracking number for the first time regarding a shipping. I couldnt find a method to get the tracking number? Please help, if anyone knows. Thanks 回答1: I am guessing that you meant " create a FedEx shipment " when you refered to " new tracking number. " FedEx has a developer program in which you can sign up and integrate your website with FedEx. Once you sign up, you can: Create shipments Cancel shipments Track packages Schedule

问题 I need to implement a very popular feature : displaying the number of views for a profile page . For instance, my profile page in StackOverflow will display how many persons have viewed my profile (just under my reputation score). I suppose that the algorithm is based on some cookies and/or visitor IP addresses. Is there a simple way (a plugin or some code source) to implement it in Grails running on tomcat/apache? 回答1: Check out the Clickstream plugin: http://grails.org/plugin/clickstream I

问题 I've wrote a opencv code for multiply moving objects detection and tracking with background substraction. Now i need to count objects who went in or out. I can get coordinates of all objects who are in camera/screen. Camera is set above object http://prntscr.com/25wgg6 . Is there any good algorythm to count in/out multi objects, or get the direction of objects? 回答1: there is an example do that in samples\c\motempl.c 来源： https://stackoverflow.com/questions/20143577/opencv-multiply-objects-in

问题 I have a site with several pages for each company and I want to show how their page is performing in terms of number of people coming to this profile. We have already made sure that bots are excluded. Currently, we are recording each hit in a DB with either insert (for the first request in a day to a profile) or update (for the following requests in a day to a profile). But, given that requests have gone from few thousands per days to tens of thousands per day, these inserts/updates are

问题 I am trying to write a VBA macro to track changes to a workbook in a separate sheet. If you do this manually, the sequence of commands is Tools > Track Changes > Highlight Changes, taking the option Separate Worksheet. You have to do two iterations of the command, one to activate tracking inline, a second to move the tracking to a separate sheet. Using the macro recorder, I got to this piece of code: With ActiveWorkbook .Save .KeepChangeHistory = True .HighlightChangesOptions When:

问题 I need to identify my users when an ad is clicked. For example, when user A is online, I need to know that he was the one who clicked the ad unit. When using my own ads, this was a piece of cake (using URL redirection) - however, now we are planning to switch to Adsense - which renders the Ad via javascript - hence I cannot setup a redirection there. How do I track - which user which ad unit - in case of adsense? Thanks alot. -- Maku 回答1: Even though there is no good way but it is quite easy

问题 I know that there is a delay in Flurry reporting, however, we are seeing no results the following day on Flurry's reporting. [Flurry setDebugLogEnabled:YES]; [Flurry setLogLevel:FlurryLogLevelDebug]; [Flurry startSession:_appSettings.flurryAppId]; [Flurry setSessionReportsOnCloseEnabled:YES]; [Flurry setSessionReportsOnPauseEnabled:YES]; [Flurry setEventLoggingEnabled:YES]; UIDevice *device = [UIDevice currentDevice]; [Flurry logEvent:@"SESSION_START" withParameters:[NSDictionary

问题 I'm playing with the idea of adding email tracking to a web service I built for a small client business. I was planning on doing the embedded image solution (with reference to an image on my server) - unless someone else has a better method - but when I use the image tag referencing a PHP page on my server it loads the "broken image" icon. How can I make this a valid image? Here is the code for the mailing PHP page: <?php $body = "<html>Hello there!". "<img src='http://mysite.com/track.php