I'm creating a program to generate PDF files in VB.Net.Everything is working fine except that the image is being displayed with a blue background while the image provided doesn't have any.Following are the lines of code being used:
sColor = IIf(mvarEncodeASCII85, ToASCII85(ImgColor),
(System.Text.Encoding.GetEncoding(1252).GetS
[code].....
I have an image like this [URL]...So its possible whether the user able to change color of each block ie:A,B,C,D 7 etc.. he has able to fill the color of the box at runtime.. and it has been saved.
View 13 RepliesIn the process of creating an Icon object, I need to reduce the numbers of colors in an image from thousands down to 256 or less. I do this by "chromatizing" the RGB values - counting the colors - then re-iterating the process with heavier "chromatization" until the number of colors is reduced to my requirement.
I searched these forums and google on this subject to find out more - but I found that I alone call this process "chromatization" it seems. So I was hoping someone could help me out with the correct terminology.
Specifically, I want to use the correct terminology on my UI buttons (at present I have a button labeled [Chromatize] . .) and I am curious as to whether it would be good practice to "chromatize" the Green most heavily, the Red more moderately, and the Blue least . . . or just "chromatize" them all equally which is what I have been doing
mage from the open file dialog in a picturebox the image displays correctly..
Private
Sub
ListBox1_SelectedIndexChanged(ByVal
[code].....
I'd like to check for all colors in an image. I've already came up with this:
Code:
Dim lst As New List(Of Color)
Dim img As Bitmap = System.Drawing.Bitmap.FromFile("C:image.jpg")
For x = 0 To img.Width - 1
[code]....
Unfortunately this needs to sweep through all the pixels, and it's EXTREMELY slow... method to get all colors in an image without sweeping through all pixels?
In VB6 you could BITBLT things around before refreshing the screen. In .NET, I'm aware of DrawImage, but that can only be done on a paint event rather than before anything gets painted. The issue I have is, I need to open several files with image data in them and then build a bigger image with those smaller images. Before I could open them, BITBLT them to a Buffer. As far as I can tell .NET offers no way to do this as the only function I've been able to find (DrawImage) only works within the paint event. Is there still a way to do this in VS08 or no?
View 6 RepliesI know this is out there and probably illogical but I was wondering if it was possible to take multiple picture files and compact them into one file.... and then retrieve them from the program later? Way to combine any amount of image files into one file
Module Module1
Sub combine()
Dim img1 As New Bitmap("i1.jpg")
[CODE]...
I have an image resized program and it works. The problem is when a user selects a non-image file in the file select dialog, it crashes. How can I check for image files?
View 4 Repliesit's possible to work with PCX image files in VB.Net? I know it's possible with most other formats like bmp and jpg.
View 10 RepliesI need to keep the original Ratio of the Width to Height of an image file within a picturebox, basically I will have to adjuest either the width or the Hidth of it. Does anyone have a suggestion on how I do this? I was thinking I would have to get the Width and Height attributes of the Picture file with an integer and use a little bit of math to determine the approprate size of the picturebox object.
View 1 Repliesi pulled some code off the internet for resizing images on the fly. it works great but only if i give an absolute address for the location of my files.
here is the portion of code:
Dim src As String = "c:downloadsff.jpg"
mage = System.Drawing.Image.FromFile(src)
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This code may be useful to someone. It's code I used to generate the code for this thread:How could i create an animated .gif file from several other .jpg files in c# express
Imports System.IO
Imports System.Drawing.Imaging
Public Class Form1
[code].....
So I have a button and an image. Is there a way that I can compile the image with the program, and when the person clicks the button 'Save', the save file dialog pops up and you can save that file to your computer?
View 2 RepliesI have a filesystemwatcher waiting for .jpg files to arrive from the camera.he file system watcher invokes a delegate (it works but is that the proper way to handle it?) sub that does a couple of things:1. Adds the just arrived file name to a table2. Attempts to display the image in a picturebox on the form. When it displays the image it imprints some information on the image that the user has entered on the screen. I use a file stream to retrieve the image.The problem is, I'm getting a file in use orror on the "Img = ystem.Drawing.Image.FromStream(fs)"statement. Not all the time. Sometimes I can add three or four files to the folder in rapid succession with no issue. But then out of the blue the error will occur. Sometimes it's there to stay but other times it will go away and allow me to add morefiles.
View 2 RepliesJust a doubt: if I have large amount of image files for my app, is it ok to store them in the resource file ?
Will those files be saved in a single resource file ? Will that cause any problem to the performance of my app ? When I try to access a image file from the resource using code, will it load that file only into the memory or the entire image contents from the resource file ?
I accomplished the task of creating a picture viewer that finds pictures in a directory,adds them to a listbox, and displays them in a picturebox at intervals using a timer. Now, I am trying to achieve a similar task using an array in a continuous timer-display fashion so that after the last image the process starts over from the first image again
Public Class Form1
im file(5) As System.IO.File
Dim num As Integer
[code].....
I have a set of files of various format like pdf,txt,tiff,jpg.I need to render it within the form and highlight the certain keywords.Initially i tried to convert all files to pdf and then render it( using itext for vb.net).Now my colleague advised me to render them as html or images, saying it might make the process easier.
View 3 RepliesI have a program that can view different images selected by the user off of their hard drive. How can I have it so they can then save that image to a different place on their hard drive using my program.? I don't know much about saving files in VB.
View 6 RepliesFirst of all, I have an image file, below is an image of squares with stripped lines,showing where each square is going to be. Each square is exactly 1cm and each space between squares is also 1cm.Fig 1 - Position of Each SquareLater on, these squares are going to be black, and for each black square, the value is one, if it's blank then the value is 0. Here is some examplesFig 2 - Completed Squares, this one reads "101", one square is filled, then a blank square, then another filled square.Fig 3 - Completed Squares, this one reads "010", one blank square, then a filled square, then another blank square
View 3 RepliesHow can i delete image files (ex *.gif) that might be in use, by another process in a directory?
View 3 RepliesHow should I handle image files of various sizes (<1 mb upto 15mb) within a mobile application that I am developing? Currently, I am displaying the image full size using a ASHX file inside of an ASP Win Form using the ASP Image Class. So basically what I would like to know how should I go about dealing with these sometimes vastly different image sizes. Would copying the image to be displayed and then scaling it on the server to whatever dimensions I decide and then displaying it in the browser be a better way of "handling" images especially in an mobile browser?
View 1 RepliesI am using grid with image column. When user's click image to opened up image(jpg,jpeg,bmp,gif) via a image and fax viewer (i.e by the operating system). i have try to open but it's open in IE
View 2 RepliesI'm looking for a way to extract .jpg files from .wmv files at given intervals. For instance, if a clip is 1 minute long and I ask for 6 thumbnails, it will give me one every 10 seconds.Can anyone point me in the right direction for anything that may already exist for extracting single frames from video?
View 1 Repliesi have this code which i am using to retrieve image stored in image data type from sql database into a picture box.This code works well but i have just realize something which will not help me if left unattended.When ever i retrieve an image it write some file with a numeric name into my bin folder.I do not know how and the importance of that file written there. Even though it work perfectly for me.It means that if i am to retreive about 500 photograph within an hour, then i will get chunck of these file in my bin folder with will affect me because it take some space.please help me fix this problem
This is the code
Dim barrImg() As Byte
Dim cmdSelect As New SqlCommand("select Photograph from Personal where MyID=@ID", connect)
[Code].....
A user scans a series of documents which are sent through a program that places a .tif or .pdf of each document into a folder on a remote VM Server and sends the image location to a VM instance of SQL Server(along with other OCR extracted data).
It is my job to create a program that will:
1. Allow another user to see the filenames on a form, chose which files need to be processed (either by typing them into two textboxes {ie. start and end filenames} or by clicking on a start and end filename on the form {from a databound SQL container maybe?}.
2. The program then must show the images in a picture box as it is copying them to the destination folder.
3. Then the software must somehow be able to regonize which documents were processed, and not include them in new searches.
[code]...
I want to add all image files in the current directory into my listbox1 when i press button1 Just like how u may open by OpenFileDialog or Drag & Drop but I want it to move all .jpg files in the current directory into the listbox so i do not have to use OpenFileDialog or Drag & Drop I am not sure how I can do this and the only code I could think about using is something linking to current directory.
View 3 RepliesI deleted the images that I thought I will not need but the program would not run. Error 1 Invalid Resx file. Could not find a part of the path 'E:Code6 04-01-2010 evening Code5 ResourcesIMG_3514.JPG'. Line 123, position 5. E:Code6 04-01-2010 eveningCode5My Project Resources.resx 123 5 Code5.I even deleted the folder to make it worse.The project is code5 but it is running inside the folder of code6.
View 3 RepliesI am currently trying to create a DLL for use with a RESTful api. The only issue I have is that so that this DLL can be used in a service or a program without a GUI, so I can't use "Imports System.Drawing.Imaging" as this requires a form. I have looked around for examples to handle this without using this library but have had no luck.
[Code]...
I Need to Store bunch of Jpeg files from local file system to a column with image datatype in databse.Can any one please provide me some code to do it?
View 6 RepliesI have another form which shows the colors from the sql server table when i click a button called show . I have arranged 15 buttons as you show me previously When i click a button called show color , the colos in the sql server tables will be shown This is my aim. for example the itm in the combobox is TATA SUMO the colors are totally 7 in the table of database , how all the colors will shown
Private Sub showcolor_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles showcolor.Click
Dim selectsq As String
[code].....