Webcam-Images-Comparison?
Jul 14, 2009
I want somehow to temporarily store and compare two images capture from my web cam every 5 sec. (basically i`m going to use this as motion detection)I figure out how to perform pixel to pixel comparison but the problem is how can i store the images temporarily every 5 sec?Do i need an array?Can i avoid saving the images for the motion detection?Also is it better to convert the images into gray scale or black & white for the comparison or as they are
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Nov 26, 2011
I am making a Texas hold'em poker game for my class project. I already have the cards in the game through an image list. I am now trying to compare the player cards with the flop, turn, and river card to tell the player what they have and if they have won or not. I have tried a number of different things but have come up short. This is the last thing I tried[code]...
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Oct 11, 2007
I have swann webcam Mac IP cam network camera...its connected to the RJ-45 connector....I want to capture images after every 10 sec. from this and save it in to sql database..[URL]
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Sep 30, 2009
I would like to acquire the images of a webcam in the background based on an event.I know there is a possibility to display the webcam stream directly in a picturebox but I want to process every single image and display them then.
The best would be if there is an event that triggers every time a webcam images is received. That event should include the image (in some kind of format).
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May 19, 2008
im creating a program which detects motion according to how much difference does the two images have. take note images come from a live webcam stream. the problem is how to compare the two images.
description of the program
a sensitivity text box will be placed on the program where it will compare with the computed difference of the two images. i have a program in vb6.0 that compares images like this
Private Sub Timer1_Timer()
'getting picture from camera
SendMessage mCapHwnd, GET_FRAME, 0, 0[code].....
now i cant translate this in vb.net i have included what i have now
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Feb 13, 2011
I need to get still image from scanners,cameras and web cam in a wpf-Winform application
can i use WIA in vista or window7
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Mar 28, 2012
I have a logitech webcam that I use to take pictures of customers to submit to a server/database. Utilizing AVICAP32.DLL calls, I was able to modify my VB.NET program to take these pictures via a button in my program.
My question is, it would me more convenient to my intended users to click the webcam button, instead of clicking on the button in my program.
Is this possible to do in VB.NET? and how can I do this?
If this is not possible to do with my logitech webcam than is there a Microsoft Webcam that can do this?
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Dec 30, 2010
result = SendMessage(buttonhandle, BM_GETSTATE, 0, 0)
buttonChecked = (result = BST_CHECKED)
Now I want to know whether the bit for BST_CHECKED is turned on or not.
How would I do that?
I can do
buttonChecked = (result % 2 = BST_CHECKED)
Is there a better way?
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Feb 17, 2012
What is the difference (in bref) between (.NET)
myString == otherString
and
myString.CopareTo(otherString) == 0
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Jan 19, 2010
read this post carfully before you dive headlong into outlining what's wrong/right with the communities.
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Dec 25, 2011
Possible Duplicate: Fastest serializer and deserializer with lowest memory footprint in C#?
I'm using BinaryFormatter class to serialize an structure or a class. (after serialization, I'm going to encrypt the serialized file before saving. (And of course decrypt it before deserialization))But I heard that some other serialization classes are present in .Net Framework. Like XmlSerializer, JavaScriptSerializer, DataContractSerializer and protobuf-net.I want to know, which one is best for me?Less RAM space needed for serialize/deserialize is the most important thing for me. Also speed is important.
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Mar 23, 2009
I am trying to compare two datatables and generate a resultant datatable of rows that do not match based on customer number. The main table "Customers" contains all customers that have been placed in our system. I am trying to generate a table of customers, "dtResults," that we have not ever generated an invoice from a table called "CurrentCust".I would like someone to look at the attached code and see how I can handle the 'InvalidCastException was unhandled', 'Unable to cast object of type 'System.String' to type 'CustomerDataTable' error. Error occurs at line 43.
1
Option Explicit On
2
Option Strict Off
[code]....
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Aug 24, 2011
I have a code in vb, and I'm trying convert it to c#.
_nextContactDate.ToShortDateString > New Date(1900, 1, 1)
This is _nexContractDate declaration:
Private _nextContactDate As DateTime
Comapre datetime to string?
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Aug 7, 2011
im trying to compare time value of to two datetimepickers, i tried to use dt_Start.Value.TimeOfDay > dt_End.Value.TimeOfDay but it doesn't work. btw, i trying to make a scheduler. here are some of my codes:
Dim strUpdate As String
If dt_Start.Value.Date > dt_End.Value.Date Then
MsgBox("End date is earlier than Start Date. Please check.", vbExclamation, "Error!")
ElseIf dt_Start.Value.Date < Today.Date Then
[Code]...
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Dec 9, 2010
In C I write an if statement like:
if (a != 0)
How do I write this != operator in VB?
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Oct 12, 2010
If Object.Value IsNot "Something" Then Can you do this, or are there certain cases in which it wouldn't work? Wasn't sure if this should only be used for integers and booleans.
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Oct 16, 2010
What code should I use to compare two pictures?
I tried those:
If PictureBox1.Image <> PictureBox2.Image then
End If
'and I tried this too:
If PictureBox1.image IsNot PictureBox2.Image then
End If
'But that all did nothing
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Feb 3, 2012
I have searched a lot on the web about changing file attributes in .net , it takes me a long time to get the final code but it was really good. But after all of my search I didn't know why we use "And" when we compare file attribute like this:
If (System.IO.File.GetAttributes(FilePath_txt.Text) And System.IO.FileAttributes.Hidden) = System.IO.FileAttributes.Hidden Then
MsgBox("File is hidden")
Else
MsgBox("File isn't hidden")
End If
Otherwise when I want to set Multiple attributes for on file I have to use "Or" with it like this
System.IO.File.SetAttributes(FilePath_txt.Text, IO.FileAttributes.System Or IO.FileAttributes.Hidden Or IO.FileAttributes.ReadOnly)I know this isn't a big problem but , I can't write a code I don't know how it is actually works.
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Sep 26, 2010
I want to compare between the cell value with the value (parameter) in database. As example, if my cellvalue value is 3 and my paramater(a) in my database is 5 it will be like this
if cellvalue<a then
(some code)
end if
I don't know the exact data type. The reason I need to use data type is because my data is dynamic.
Here is my
protected SubGridView1_RowDataBound(ByVal Sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles GridView1.RowDataBound
con = New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;DataSource=C:UsersmeDocumentsVisual Studio 2005WebSitesCSGCSG1.mdb")
con.Open()
[Code] ......
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Jan 4, 2012
I have a computer that takes in a barcode through a Visual Basic program on one computer and I want to be able to compare that barcode as a String to data on a different computer on the same network by ethernet connection where the data is stored in an Excel 2010 file (.xlsm) in Column A in a workbook called 'Data.xlsm'. Before the data is allowed to be saved or used further in the program on the first computer, I would like for the comparison to happen.
Some more details that you all may or may not need.
Computer 1 (where barcode is scanned): Windows 7, Office 2010
Computer 2 (where data file is stored): Windows XP, Office 2007
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Mar 26, 2009
When using the Dictionary class when the key and value types are your own custom types, is it possible to specify the property of the key type object to use with the ContainsKey method? Best described with an example:
Dim dict as New Dictionary(Of CutsomType, AnotheCustomType)
Dim obj1 as CustomType ' Custom type with 3 properties ID, LastName and FirstName
Dim obj2 as AnotherCustomType
[Code]....
I could just omit the lines with ContainsKey but I'd prefer to know how it's making the comparison and how to change it if required. I don't want to use an integer containing the ID for the key type because I want to reference the whole object later on again.
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Apr 14, 2011
i have 2 excel sheets (file1.xls, file2.xls), both with 2 columns. the first column of both files contain keywords, (both files have the same). now i want to write code in excel that compares the 2 files and put all the cells that are different in a new file (file3.xls). i already saw an example here on the site, Excel sheet values comparison, but somehow it doesn't fit for what i need, and i don't get it to work.
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Jan 25, 2009
i'm building an image library and one of the things i want to do is compare the most common color in a given image to a set of established colors in rgb format the way i'll probably do this is create 3 arrays for the average r,g and b of each given image, and then compare them to my established values for r,g and b that i want to match to so if my first image has the average values of 255, 125 and 5 for r,g and b..what would be the best way to do a nearest match against my pre-established colors? (about 32 in total)
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Sep 21, 2010
I am working on a program for a customer and am working in VB2010 in VB language. I have two rather large files that contain data. File #1 is over 300,000 lines of data. File #2 is over 100,000 lines. The files are CSV text files. On a User Form, there are two values, "StartTime" and "StopTime". This is the process I am doing:
1. Read both files into ArrayLists
2. Get item #1 of ArrayList #1 (we'll call this "A")
3. Get item #1 of ArrayList #2 (we'll call this "B")
[code]....
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Dec 9, 2011
I am using Entity Framwork and have an Entity Customer with a property of[code]...
However I noticed that this code does not get executed when Customer.CustomerStatus Is Nothing.
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Jul 27, 2009
I have a form containing a checkedlistbox, I want to be able to do a simple comparison between the checked status before and after to see if there has been any change. I have a copy of the "before" version of the checkedlist box and I thought I could just compare the two CheckedItems but it always thinks they are different, I could iterate through the entire checkedlistbox but I thought there would be an easier way.
[Code]
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Jul 20, 2010
which is more efficient?(Assume case statements, etc., cannot be used.)
If a Then
If x Then
ax()
ElseIf y Then
[code]....
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Apr 27, 2009
currently I am using something like the following:[code]It seems to work fine, but I've seen posts on different blogs and stuff that say string.compare is better for some reason.Is this ok to use or should I be using string.compare()?
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Aug 1, 2011
I am trying to do a comparison between a date in my db and a date in a textbox.I am using the following
CDate(Me.txtVrijeDatum01.Text).Date <> CDate(reader("VrijDatumVeld01")).Date
It works pretty well except when the textbox is empty or the value in the db is NULL.
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Jun 4, 2011
The idea is to scan a folder of images and then let the user navigate back and forth through the images using a couple of buttons.The problem is, I can only get it to return a single image, and not the whole lot. It's looks to me as though the images are getting assigned to the same index in the array. [code]
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