I have been searching many ways to compare 2 images and still I havent got anything usefull.
I was wondering how can I compare 2 images and either return TRUE or FALSE
is there like a DLL and I send 2 images and either return TRUE or FALSE?
I am wanting to be able to check to see if two images appear to be the same, within a certain threshold.These two images are the same to the eye, but one has slightly different colors. I have tried the following example:
[URL]
Unfortunately, it only seems to detect when the images are identical. How can I determine if the images are the same within a certain threshold, with VB.NET?
I have a webcam directly over a chicken nest. This camera takes images and uploads them to a folder on a server. I'd like to detect if an egg has been laid from this image.I'm thinking the best method would be to compare the contrast as the egg will be much more reflective than the straw nest. (The camera has Infrared so the image is partly grey scale)
View 1 RepliesI'm trying to compare images for a slot game, and I'm pulling images from an array for this, but I get the error message:
"Operater '=' is not defined for 'System.Drawing.Image' and 'System.Drawing.Image'"
If imgSlot1.Image imgSlot2 Or imgSlot1 = imgSlot3 Then
Points = Points + 10
MsgBox("Nice!")
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I have the code below on a timer( "b" is a bitmap )
If
Not (Clipboard.GetImage
Is
Nothing)
[Code]....
The problem is that it raises the event even if the picture didn't change.
comparing the 2 images without actually comparing them pixel by pixel (too slow to do the job)?
I was thinking to make an app to save images [or download images] to local hard disk. But to keep it easy, I want this app to create a small picturebox on form to show the thumbnail of downloaded image. Lets say a 5 pictureboxes has to be added with the thumbnails to show the recent downloads. A user can save the location where he wants to save the files on hard disk. A listbox or a dropdown menu will help in categorizing the images, like image1 in friends section, image2 in family section, image3 in others, etc... When the program restarts all the latest 5 thumbnails has to be loaded in pictureboxes and the directory that was chosen. Finally, a button that shows the downloaded images into original image file size one by one or a slide show. Is it possible to make such program?
View 2 RepliesI m comparing two images in VB.Net..I get the code in C# & dat code is working 100 % Correctly..Now want to convert dat code to vb.net..& i need help in just converting two lines-
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can we use images in the resource folder as background images by setting the background image during run-time by coding?
View 5 RepliesI have a gridview that is bound to a datasource (Windows Forms, VB.NET). One of columns is a property of type boolean, and I want to show "yes/no" in the column instead of 0/1 or "true/false". Is this possible? Can you edit displays of columns that are bound?
View 1 RepliesI have a program that will get a hash of the image but the problem is that I have to do to manually.I have a set of images of a folder names images(C:/images/) and ill be choosing which of those images i want to upload to my database.So far I got my program to work with database and such, wat I need is, if its possible I but the folder path on OpenFileDialog and I was a image to show in Picturebox1, then if I press button1 it will go to next picture.
View 1 RepliesI am working through my new MVC book and of course, the samples are all in c# as usual. There is a line of code that says public bool? WillAttend { get; set; }
The author explains that the question mark indicates that this is a nullable (tri-state) bool that can be true, false. or null. (A new C# 3 convention.) Does vb.net support any convention like this. Certainly I can declare a boolean in vb.net and I can explicitly set it to Null (Nothing in vb.net).
I'm creating a form which is basically an image in a picture box that I use the graphics object to do drawstring's and drawimage's upon.I keep track of where I'm drawing these things so that I can click on them later and do various things (launch external apps - whatever).Is using a picturebox and the graphics object the best way to approach this.
View 1 RepliesI am wondering if there is a easy way of comparing data in two datatables available in following format:
datatable1
Quote:
ID Length Width Height Qty Rate
ID1 1.50 3.50 1.15 10 55
ID2 2.50 3.50 1.25 20 65
ID3 3.50 3.50 1.35 30 75
[Code]....
ID column of both the tables are unique ID's and can be used for comparing both the databtables.
I am wondering based on these ID's, both the datatables can be compared.
For example, if datatable 1 is used as reference table, data in ID2 and ID5 of datatable2 are different when compared in datatable 1
i have imported some data from excel and into datagridview but does anybody know the code to compare data in 2 columns to see if they are equal and if they are not equal a messagebox would show "there are errors" else it would show "there is no error, you may continue".
the attached file is an example of the excel data i imported to datagridview.
For the past day or so, I have been trying to compare values in my SQL server against an actual calendar. I have had mixed luck with this and I have exhausted my limited knowledge. I am looking for a shove in the right direction.
Background:Right now, I have a program that writes a record to a database when the program completes successfully. This time stamp has both the date and time on the SQL box. I want to grab that information and compare it against the basic calendar. I have attached a picture that should help explain things. This is just my test app,
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I have this
[Code]...
All that is happening above is two players are being compared by scores and a winner is then decided. The calculation works fine and places the winner in the correct spot (txtWinner1.Text) as long as the numbers are positive. So if txtU1D.Text has 13 and txtU2D.Text has 14...txtU2 is the winner. Works with no problems. However, if txtU1 has -1 and txtU2 has -2...it says txtU2 is the winner. The negative scores are common in the game being played so the situation often happens, but may be one player only. It seems to work if one is positive and one is negative, but if both are negative it thinks the higher negative number is the winner for some reason. So it will give the win to someone who has -9 over someone who is -4.
We publish official documentation into pdf's, tiffs, and cals depending on the document type. Recently, we have discovered that somewhere in our publishing process, the system can hiccup and cause a character or two to become missing. It's intermittent and not consistent. We have a fix for it, but unfortunately have hundreds of thousands already published in the repository. It was brought up that we may want to consider developing a batch comparison tool that would compare a newly published version to the original published version to identify the problem documents. There was multiple thoughts on how to do this:
1.) Compare file sizes... unfortunately, any variation will cause the sizes to vary and small variations may not accurately reflect in it.
2.) Binary comparison... not sure how this would work at a file level like this
3.) Hash MD5 Compare... not sure how this would work either.
So I thought I'd ask those out there with some similar experience, what is the best way using the .Net Framework to compare one tiff to another, one pdf to another, and one cal to another?
I have a program that backs-up remote locations to a centralized FTP server. Upon successful completion, a record is written to a SQL database with the following information:
GUID (uniqueidentifier)
StoreID (varchar(5))
DateStamp (sqldatetime)
ProgramAndVersion(varchar(50))
I am currently managing the program by running a report on who has written a record to the database. If the record is not written, I manually go in and backup the necessary files.The problem with this, is that it can take up to 30 minutes/day to do this task. While that's not a long time, it's getting somebody to be dedicated when I'm off and that has proven to be difficult.
I want the program to automatically search for missing records, but I'm not sure how to do this. I was thinking about bringing in the last 30 days with a SELECT statement and then comparing the information that I have in the SQL database versus a calendar control (or something). I need to make this process completely automated and not very intensive on the SQL server. I only have the following
2010
Sub FindMissingBackups(ByVal DaysToCheck As Integer, ByVal StoreNumber As String)
Dim TodaysDate As SqlDateTime = Now()
Dim PastDate As SqlDateTime = DateAdd(DateInterval.Day, -DaysToCheck, Now())
[code]....
I have this piece of code which goal is to compare ALL records from recordset rs1 to ALL records of recordset rs2. Im doing something wrong because, when the code finishes I find that some records that fulfill the matching condition are not being considered as matched.
[code]...
how to compare two list boxes and remove identical values or add them to a 3rd list box, but for some reason it's not working when I retrieve the data from a mySQL database using ADODB, here's my work cut down by a fair bit for it to be easy to understand.
For k As Integer = lstFriends.Items.Count - 1 To 0 Step -1
If lstDBFriends.Items.Contains(lstFriends.Items(k)) Then
lstFriends.Items.RemoveAt(k)
End If
Next
I've tried everything from changing the data type on the mySQL database to storing the retrieved data from the database to String declaration and it simply wont compare the two listboxes
I looked at the Dispose() method in System.Data.SqlClient.SqlTransaction (using a decompiler):
[Code]....
Why does everyone say in forums that it is Rolling back in the dispose? Where does it rollback?
I'm writing a report scheduler that is somewhat of a clone to the backupexec scheduler and the layout can be seen in post #10 here: [URL]..It works great and saves/edits/deletes records just fine, but now i need to compare those records one at a time in a windows service that i'm writing in order to trigger automated report creation and emailing - i already have the report and i already have the code for the emailing, i'm just looking for the most efficient way to loop through the table (that i've pulled in to a dataset) and compare its records with the current date and time - if true, the event fires.
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1stSun, 2ndSun etc are bit fields, time is a datetime, and the remainder are varchar. My service checks the database every thirty seconds.The english version of what i'm trying to do is "Connect to the database, grab the entire table (it will always only have 5-6 entries max, so i felt 30 second sweeps was okay), and If today is the 1st Sunday of the month, and it is currently 11:00:00 a.m. (could be any day or time, this is just an example) - loop through the dataset to identify if any records match the time field or greater - if they do, fire the report
I have a specific image that I want my application to look for on a specific window. I've done something similar to this along time ago with VB6, but it was slow, and it was checking for specific points in the picture rather than the whole image itself (for speed reasons). I named this image "Image1.jpg" and I want to compare it to the window with the handle "001C08F2" and class "SunAwtCanvas"
View 19 RepliesI need to overlap two images. When overlapped at the correct point, the overlapped portion of both images match exactly (or very closely).Now, I have tried to match the color of each pixel in the images, then move one image a bit and match them again until I get a high match rate, usually 95% or higher. The issue is, this is ridiculously slow. Also, I can't find a way to check the pixels if one I need to check a negative co-ordinate.
For y As Int32 = 0 To bmp2.Height Step 4
If y + StartPos.Y >= bmp1.Height Then Exit For
For x As Int32 = 0 To bmp2.Width Step 4
If x + StartPos.X >= bmp1.Width Then Exit For
[code]....
I have a picture viewer with listbox,listview,picturebox. I used code snipets and modified them for about 3 weeks now. It works pretty good too i think. But when i add images as thumbnails to my imagelist from openfiledialog i can only add about 75 images any more and i will get a out of memory error. Or if I add say like 50 twice the second 50 added will have the right names but not the right image. My question is. Is there a way to load some images pause then load some more by code for about 250 images so that the loading could clean some memory? And or code where i could add aditional images to the imagelist? And i just cant stop trying to get this Picture viewer to work right.
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I found this code :
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[code].....
I have a database (mysql) to which I connect, I have a column in the database (the images) that I view as a grid that is in the datagridview autoimplementa. BUT THE IMAGES ARE STORED AS A URL.
View 1 RepliesI am using a FTP code found here on the forums (can't remember where), But i have a problem with it. When some images are uploaded they turn out weird. For example: Here But some other images turn out well.
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I have a sequence of images I'd like to convert to AVI at 30fps. How could I do that?
View 2 RepliesI'm in the middle of making a program launcher. I've been able to make a version of it before, but now I want to add more options for viewing the shortcuts. The 2 main views I'm trying to get are: Icon only and Icon with the name.
Here is my original code for only the name:
VB.NET
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'Start bottom right of screen
Dim working_area As Rectangle = _
SystemInformation.WorkingArea
[Code] .....
I have switched over to a listview because I assume that's what i will need in order to show images. So I guess my first question will be how do I get only the icon from each file and then show it in the listview.