Implementing imfilter(matlab) with opencv - matlab

I was trying to implement matlab's imfilter function in opencv. I found across this link which could help me CLICK HERE. That link has an answer which I am expecting. But the C++ code there is not complete. As I am new to opencv, I couldnt use the FilterEngine correctly. Anybody help me with the complete code along with the FilterEngine class.

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AVAudioEngine documentation

I'm trying to find a detailed documentation for how to work with AVAudioEngine. Does anyone know where I can find it?
I've found this, but it seems extremely spartan in comparison to the richly documented UI stuff.
https://developer.apple.com/documentation/avfoundation/avaudioengine
Is this it? Are there header files somewhere I can at least peruse, like there was with AUGraph (before they deprecated it).
You can also try Apple's official sample code at
https://developer.apple.com/library/archive/samplecode/AVAEMixerSample/Introduction/Intro.html#//apple_ref/doc/uid/TP40015134-Intro-DontLinkElementID_2
The link you provided should be enough to be able to work with AVAudioEngine. If you go to the parent page of AVAudioEngine, that can be found here, you can see all the building blocks you need to work with the audio.

Image Editing Issue

I am working on an app with have requirement to give "Droste Effects" on image.i did search on Google more but not find programming solution for this effects.the effect example in there below.
http://apping.me/ios/4eb514ba8491783f5b0001e2/droste+vision.html
http://www.pmavridis.com/iDroste/iDroste.html
Please provide me suggestion or any tutorials link. How i will do that task?.Thanks in advance.
The Droste effect is a trick made with some intense mathematics and a recursive function. Please read http://www.josleys.com/article_show.php?id=82. If you don't know about recursion please read up http://en.wikipedia.org/wiki/Recursion. Since your request is very specific I doubt there will be many people who happen to have a Droste effect code written in the iphone programming langauge, but the links above should help you understand the math behind creating your own. Good luck.

SIFT implementation in MATLAB Tutorial

I'm looking for some basic SIFT implementation in MATLAB. I need to write it from first principles. Also, I'm looking for something which explains whats going on in the program. Vedali's code and David Lowe's code just go over my head.
If you are a Matlab user, you must know this excelent site web : Matlab File Exchange
There, you will find the following project : Feature Points In Image
I think this project will fully answer to all your questions about sift.
It also posible to have a look of the SIFT implementation of the opencv library.
Then, you can find a matlab implementation by the SIFT inventor here :
D.LOW SIFT, I assume that you already know this implementation.
To understand SIFT, read this very good paper ASIFT wich explain the ASIFT algorithm. This paper start with a description of SIFT alogirthm.
You can have a look at this implementation by Yan-Tao Zheng, Ming Zhao, Shi-Yong Neo.
Also, I know that Scott Ettinger from Intel research made a Matlab implementation at some point.

Sample code using Core-Plot for iPhone

I'm trying to find some sample code for Core-Plot on the iPhone. So far, all the examples I've found plot equations such as X^2 or 1/X, etc. over some range. My goal is to find some sample code that just plots two points ((1,2) and (2,3), for example) and connects them with a line.
It seems simple, but I've yet to find out how to approach this. I've checked the Core-Plot Wiki, and am again only able to find more complex examples.
Appreciate any help, thank you.
Have you looked at the examples included with Core Plot? There's a mix of Mac and iOS apps. Except for the hosting view, the API is identical on both platforms.

MATLAB markup for doc-page

What resources are there for explaining how to write MATLAB comments in the correct format for display using 'doc' (that is the Help Browser).
In particular, I'm writing a class, and would like the help documentation to look like MATLAB's own. I'm focusing on the practical - such as documenting the various ways of calling a function. I haven't been able to find any documentation on what markup to use in the comments to achieve this.
(As an added bonus, I'd like the autocomplete tooltips for class functions to display something meaningful rather than MyFunction(MyClass object...) - but that's getting a little too specific at this stage! I'll re-ask this if it doesn't come naturally once I've got some documentation)
Try this:
Matlab Help/User Guides/Desktop Tools and Developement Environment/Custromizing Helps and Demos/Providing Your Own Help and Demos
I hope this helps.
Edit:
It looks like it changed in 2012a:
Matlab Help/User Guides/Programming Fundamentals/Software Development/Create Help and Demos/Add Help for Your Program Files