detection

I am starting to use the MapBox iOS SDK . Is there any possible way to query the MapView by a coordinate and get back the terrain-type (water, land) as a result? I've been reading the API doc for quite a while now, but could not figure it out. I know that there are (interim) solutions available to use a Google webservice, but I need this to work offline. I am not bound to MapBox (but I like it) though, thank you for any hint! No need to delve into runtime styling (see my other answer, false lead): very simple method using mapView.visibleFeatures(at: CGPoint, styleLayerIdentifiers: Set<String>)

Using opencv, can a detection of a certain colour(Between a certain range of rgb values) be carried out in an image or a video frame? You need to the define the treshold in RGB, and process the pixels in the image (hopefully not the whole image but a smaller region of interest, maybe a moving foreground shape) that fit to the deffinition. Something similar to what is discussed here . I am understanding that you know the color(or colors) you want to detect a priori. I hope this helps. Yes, better convert the image to HSV and try the 'InRangeS' function. Here is an example to track two different

I have just stumbled upon Bad Behavior - a plugin for PHP that promises to detect spam and malicious crawlers by preventing them from accessing the site at all. Does something similar exist for ASP.NET and ASP.NET MVC? I am interested in blocking access to the site altogether, not in detecting spam after it was posted. EDIT: I am interested specifically in solutions that will detect access patterns to the site - these would prevent screen scraping the site as a whole, or at least make it a very slow process for the offender because the bot would have to act as a regular user in frequency of

How can I detect when the user blows into the device microphone? This would then be used to trigger some action by the app. The job of detecting when a user blows into the microphone is separable into two parts: (1) taking input from the microphone and (2) listening for a blowing sound. The noise/sound of someone blowing into the mic is made up of low-frequency sounds. We’ll use a low pass filter to reduce the high frequency sounds coming in on the mic; when the level of the filtered signal spikes we’ll know someone’s blowing into the mic. Source: http://mobileorchard.com/tutorial-detecting

Have a project with a TRIANGLE shaped graphic in a sprite. I am arranging these sprites in a grid so that their rectangles are all overlapping. As sprites get touched their z-order is being changed (by me) to put them on the top of zOrder. I am using Cocos 0.8.1 and the touch dispatcher method. I have touches working but obviously the "hidden" sprites which are overlapped by other sprites are not able to be touched. The problem is that the "Is the touch in my rect" method is based on the rectangle of the sprite, but the image is a triangle, and I would like to ask if anyone knows a Cocos

I'm trying to detect voice throught input from the microphone in real-time. I allready receive the input, execute FFT algorithm and have the result in dB. I have a frequency domain, a time domain and a spectogram. How can I get the fundamental frequency? If I get the fundamental frequency can I specify that if the frequency is between certain values, then it is voice that we are talking? Is there any other way to do this with the things that I allready have? Tks in advance There are many different algorithms for frequency estimation , and the right one to use depends on what you're doing. What

Is it possible to change the colorscheme in Vim when I open a .vim, .htm, .html, .xml or the _vimrc file? (also change colorscheme when I switch to an already open file with above extension) This is what I want my vim to do: file = txt or a new (not saved) buffer: colorscheme1 (default colorscheme) file = vimrc, vim, html, htm: colorscheme2 I noted also that my vim doesn't detect all filetypes. Text files are not recognized as text file. ps: If this is not possible would it be possible to switch to another colorscheme and keep it when I restart VIM (without changing something in vimrc)? edit :