Am new to this area, it would great if any one help me on my request. I would like to retrieve each words co-ordiantes (x,y axis) from a jpg file, which is scanned hard copy. I know this can be done with the help of OCR sdk's. But i dont know how to integrate those sdk's with my .net application and retrieve the value. It would be great if some one suggest me the best way or sample codes to do that.
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Apparently I don't understand what PointToScreen() is actually returning. I'm thinking it should be absolute screen co-ordinates. In a form, I have some labels in a panel, which itself is in a panel and am trying to derive the screen co-ordinates for the labels in one statement without adding the X and Y co-ordinates of the panels. Why does PointToScreen(Label.Location) return the same value as PointToClient(Label.Location) and the same as Label.Location? Shouldn't PointToScreen() return absolute SCREEN co-odinates?
View 12 RepliesI have Parent and Child Form I have a button to save on the child form, which uses the code below, all works fine.
Private Sub menuItemSaveAs_Click(ByVal sender As Object, ByVal e As System.EventArgs)
Gdip.SaveDIBAs(Me.Text, bmpptr, pixptr)
End Sub
Which then uses code below, located in my GDIPlusLib class:
GDIPlusLib
[Code]...
I am Trying to develop an optical character recognition system. I have a problem regarding the scanned data. Whenever i can a document the scanned image seems to be a little slanted/rotated. I am not able to figure out a way to rotate the image/scanned document.
View 3 RepliesWe need to capture an scanned image from a flat bed scanner and store it in an SQL table.
Does VB.Net 2005 have any tools to allow us to manipulate the scanner and its capture its output programatically?
how would you identify the shape of text like inside a scanned document containing text and graphics?In a perfect world,users would never enter data in the wrong form,files they choose to open would always exist and code would never have bugs.[URL]
View 5 RepliesI have scanned a map which was in UTM WGS 84 projection system. The scanned map is now in jpg format and loaded into picturebox. If I select a point, how could I know that point's latitude and longitude? How could I integrate a projection system over the image displayed in picturebox?
View 1 RepliesHow to retrieve a binary image from a database using vb.net and insert the image into a GridView.
This is my DB
image (id as integer , img as varbinary(max))
how to retrieve an image from database using image URL and insert it in grid view in vb. net ?? thats my data base table i have 3 columns in table image (ID as int , imageName as varchar , imageURL as varchar(max) i want to insert the image in a grid view but when i run this code i only get the last image in my table everytime thats my code:
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
'---------------------------------------------------------------------------
Dim dt As New DataTable()
Dim strConnString As [String] = System.Configuration.ConfigurationManager.ConnectionStrings("ConnectionString").ConnectionString()
Dim strQuery As String = "select * from image"
[code]....
I have entered an image in sql server database successfully. Now i want to retrieve this image from database and show it in an Image control. I don't want to put any ListBoxes on the page. I wrote in ASP dot Net..
Dim MS As MemoryStream
Dim IMG As System.Drawing.Image
Dim FS As FileStream
[code]......
I am using VBNET2008 and Microsoft WORD 2003.I was requested by IT Manager transfer the image to the WORD 2003 Document
From folder.[code]
I create a program whose functionality would be selecting a file, then gets the contents of that file (Word or text files). The program, of course, has a Richtextbox on it where the file content will be filled to.
View 4 RepliesIs it possible to have forur coordinates in a panel so that i want to move label in these co ordinates.
View 1 RepliesI want to convert British OSGB 36 co-ordinates to WGS 84 (i.e. "standard" latitude and longitude), in order to plot them into a KML file for Google Earth.I should probably add that my question is not "How do I write a KML file?". My question is "How do I convert between these 2 co-ordinate systems?"!!I was hoping there would be a library that I could use, rather than rolling my own function - it seems like the sort of thing some-one else would have implemented.
View 5 RepliesIf I use the following code to draw a rectange, do the values inserted into 'fromleft' & 'fromtop' set a co-ordinate from the top/left corner of the paper or from the top/left corner of the margins.
Dim R As Rectangle
Dim across As Integer = 5
Dim down As Integer = 13
[Code]....
The reason I am asking this question is because I am trying to print labels so the position of the labels on the sheet are fixed. When the printer is set to papersize = letter the first label is in the correct position but when I change it to A4 the first label has moved 4mm to the right. With the margins set to 0 I still cant get it justified correctly. The printer is obviosly capable of printing 4mm from the left because it does so when set to 'letter'. Can't use letter because I need the extra length of A4 for the bottom row of labels.
I used the following code to click mouse on the specific co-ordinates on an open windows application
Private Declare Sub mouse_event Lib "user32" (ByVal dwFlags As Long, ByVal dx As Long, ByVal dy As Long, ByVal cButtons As Long, ByVal dwExtraInfo As Long)
Private Const MOUSEEVENTF_LEFTDOWN = &H2
[code].....
I have tried following code to retrieve image from my database.
Dim sEmpID As String
sEmpID = TxtPisno.Text
If sEmpID.Trim = "" Then
Exit Sub
[Code]...
I have manged to save the image using long binary data (ithink) but finding it hard to retrive teh image again. i want to display diffrent pictures as i navigate throw the database
[Code]...
I have creating my application in visual basic using the tables from ms access that I created. In the tables there is field "attachment" with pictures saved in there.
View 1 RepliesI need to retrieve url from an image by simply dropping that image to a form or textbox and it must act as drop box.
Several download managers have this function (flashget,IDM,FDM)
I've a program that is used for marking exam paper. The exam paper is actually an image being scanned.
The marker will have to retrieve an unmark 'exam paper' from the SQL server column named 'Answersheet'.
After marking, the marker will then save the marked 'exam paper' into the SQL server column named 'MarkedAnswersheet'.
I want to retrieve image from database mysql in vb by using no id. But why I have error "Unable to cast object of type 'System.Byte[]' to type 'System.Drawing.Image'."
This is my codding. I'm using visual basic 2008 and database mysql. picture format BLOB. E.g.[BLOB - 22.1 KiB]
Imports MySql.Data.MySqlClient
Imports System.Drawing.Imaging
Public Class Form_Popup
Private Sub Form_Popup_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[Code] .....
how to retrieve an image from a MYSQL database
View 2 RepliesFetch the image in mysql database and display it in the picturebox.i have a fieldtype mediumblob on my database.i cant move on with the application i develop.
View 1 Repliesiam using the code below to try and retrieve images from an access database but it is giving me an error saying parameter is not valid. [Code]
View 1 RepliesI use this code given by .paul
Dim ms As New IO.MemoryStream
PIS.PictureBox3.Image.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg)
dsNewRow.Item("picture") = ms.ToArray
[code]......
I am using this code to create a list of open windows. How do I extract an icon from the open program so I can add it to an imagelist?[code]...
View 6 Repliesi have an image that is stored in a SQL database and i need to retrieve the image and display it in a picturebox on my form. i have found alot info on this but everything o tried didn't work how do i go about doing this?
View 2 RepliesI have created a program where I capture image and ask user to answer question upon the image they see. The details about a captured image will be shown in listview. When user click the listview item they can preview the image which they captured. I am unable to do it as keep showing the same image.
[Code]...
I've got an ASP.NET upload form on one page, where the user can upload an image.[code]...
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