Measure Distance Between Two Or More Image After Edge Detection Feature Extration
Nov 23, 2010
I need to read 10 images in 1 folder and do feature extraction onto 10 images.Does anyone can suggest any good edge detection by using C++ / VB.Net / C# language? After I can successfully detect the edge and write a new image file (in this case is generate 10 new edge detection filtered images, only black and white line image) within the same folder.Then lastly, I do not know any distance measurement able to calculate distance between each edge detection filtered-images (not the original image) and show the result in graph.How can read those images back and get the data of the edge?Keywords are edge detection and distance measurement.
I have a function to do edge detection that works fairly good with one pass and without using a convolution filter. The only thing is that it will shift by one pixel the resulting image when I runt it from top to bottom and from left to right. I can live with that. Just a curious thing that I got when I ran it several times in a loop to see the effect of applying it several times on the resulting image.A deformed image appears at the beggining and then, bit by bit it splits appart and after shifting it the width of the original image I get a double image. I wonder how the computer keeps track of the first image and is able to separate the two after several iteractions.I know that in electronics you can have several signals in a circuit and you can separate them with frequency filters, or you can simultaneously download several files with the same modem aand the two computers will synchronize each one, but this surprissed me.
Here is a simplified version of my function
Private Function Preview(ByVal Thumb As Image) As Image Dim bm As New Bitmap(Thumb) Dim X As Integer Dim Y As Integer
[code]....
I have tried with more complicated images and with larger sizes, but to make upload smaller I includes these two images of simpler and smaller size. A view of the GUI and an animation of the process:reload to see the animation.
I have a problem in detection edges in a picture. Im going to use this to make some recognition of pictures. I have found a way of doing Sobel filtering without the use of system.drawing.bitmat with BitmapSource.CopyPixels. I have posted code fore Sobel filtering here:
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and how to get a nearest point along the path with a given point? or
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As I've noted in another thread I'm trying to put together a secured kiosk app for access to our college library catalogue.I've managed to do most of the stuff with little fuss but, given that I'm not much of a programmer, I'm having a bit of trouble with certain features I'd like to incorporate.One of them is that I'd like the webbrowser control to return to the components designated homepage after 5 minutes of inactivity.
Well an alternative way is by just showing the connection speed which is:
Dim AllNetConn() As NetworkInterface = NetworkInterface.GetAllNetworkInterfaces Dim IntConnSpeed As Integer = AllNetConn(0).Speed / 1024 Dim StrConnSpeed As String = IntConnSpeed & " Kbps"
[Code]....
But i need something more specific like the download/upload speed.. I know that i could make my program download a file with the size of 100kb and measure how much time it took to download but i dont know how to measure the time...
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I'm trying to draw some text using GDI (i.e. using a graphics object). It is done using the basic method of creating a path, adding a string to it and using a brush to fill it.
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I'm using VB.NET to connect to and parse data from an Analysis Services database.
The problem I'm having is while trying to find all Measure Groups that are related to a given Dimension. I've been digging through the API and it doesn't seem that Dimensions have any information on Measure Groups at all, but Measure Groups can contain Dimensions.
This makes it easy if I want to get a list of related Dimensions given a Measure Group(measureGroup.Dimensions), but what I'm looking for is the opposite.
The only thing I can think of is to loop through all the Measure Groups within the Cube and check if it contains a reference to the Dimension in question[code]...
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I like to make an console application to measure the time it takes to fully load a web page, what's the best approach to do that? The purpose of this small app is to monitor some pages in a website, in a predetermined interval, in order to be able to know beforehand if something is going wrong with the webserver or the database server. It would be nice to be able to measure the time it takes to fully load the the page (images, css, javascript, etc). I have some code but I is not measuring the fully page.
Dim sw As New System.Diagnostics.Stopwatch Dim req As System.Net.HttpWebRequest = CType(HttpWebRequest.Create("[URL]"), HttpWebRequest) sw.Start() Dim res As System.Net.HttpWebResponse = CType(req.GetResponse(), HttpWebResponse) sw.Stop() Dim timeToLoad As TimeSpan = sw.Elapsed
This is a long long lojngoi sudofi usdfh ksjdhfjk sdhfgkj shgh sdfhg sdfg sdfgdsfg ... I want to specify a maximum width (eg 180) for my string and get the height returned... the picture below explains in more detail:
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