I'm in search of a simple algorithm to replace a color in an image with a different one like in this one-> [url]. I'm using VB.NET. Can a "flood fill" algorithm be applied for this purpose?
View 1 RepliesIn either of these (preferably Vb6), is it possible to replace a specific pixel color with a defined color? For example, if i scan my screen for 100,200,150, is there a way i can replace every instance of that with a specific color?
View 4 RepliesI am trying to do this(will explain below) :
If RichTextBox1.Text = "" Then
MsgBox("No text selected!", , "Warning!")
Else
[CODE]...
I created a button , i have a richtextbox , i want to do this : i will right something in the richtextbox , and when i will select what i wrote and click on the button it will replace it with <font color="">something</font>. but instead it rights next of what i selected .. any clues how to replace it and not right next to it ?
the following code is supposed to replace the system color that's used for window backgrounds. You'd change it by P/Invoking the SetSysColor() API function. i am using the following code that was suggested to me but unfortunately when i click the button nothing happens!
Imports System
Imports System.Drawing
Imports System.Windows.Forms
Imports System.Runtime.InteropServices
[code]....
I have program that read the image from file with extension .ojn, I can show that image file into picturebox, [Code] 268 is offset that contain image size (in byte) and 296 is offset that contains the image. I want user can replace image on offset 296 and write size of selected image to 268.
View 3 RepliesI want asking, I have program that read the image from file with extension .ojn, but I can show that image file into picturebox, Here my code to read the image:
Dim path As String
path = openfiledialog1.filename
Using fs As New FileStream(path, FileMode.Open)
[code].....
Following on from my question here [URL]
If I replace an image in a picture box, should I dispose the original image first?
Or, what about this situation:
Dim bm As New Bitmap(32,32)
bm = New Bitmap(32,32)
bm = New Bitmap(32,32)
bm = New Bitmap(32,32)
Does bm need only to be disposed at the end, or should it be disposed before each re-creation?
A big oversight there on my part. I knew a control took care of disposing its children but It hadn't occurred to me that I should dispose an old image if I replaced it.
A) can i set the minimum width of a new created tab ?
B) can i replace the default tab shape with an image?
C) is there a simple why to drag tabs to change their orders in the tab list like most modern application do or i have to code it ?
When i scan a image from my scanner it's scan properly if the file exist with same name programme show error it's any way to replace this name and save the properly.
View 11 RepliesI have big problem with my CHAT app. I want to add smiles but i have some problems. I using transparent Richtextbox, and when i try to use Regex system to replace text with image it work, but everytime other smiles disappearing, i only see last one. Second thing, i want to use GIF animated smiley and this Regex method don't work with all of these my problems. So i need an other way... Can anybody show how to do this
Imports System.Runtime.InteropServices
Public Class TransparentRichTextBox
Inherits RichTextBox
[code].....
I have an image
[URL]
Here is my code
Dim PictureLoc As String
PictureLoc = list.SelectedItem 'list of picture paths
Me.BackgroundImage = Image.FromFile(PictureLoc)
Dim NewPic As New Bitmap(1, 2) 'Make a new image
[code]....
Ok lets say i have a image with a black back color and a circle that is white. How do you change the circles color in vb? Is there a code for it?
View 2 RepliesI am using VB2008. I have an image (black with transparent background). I would like to replace the black color of the image to another color (blue or red). Suggestions on how I could go about this will be very much welcome.
View 2 RepliesI am trying to create a function that would take 2 images. 1 of the images is a grayscale image and the other is a normal image. What i want to do is apply any of the R or G or B of the grayscale image (in grayscale image r=g=b so it makes no difference) to the Alpha of the second image. i DID succeed on it. However the code is EXTREMELY slow. It takes 1 second to perform it. And i have to perform the function atleast 30 times a second (it will be outputting to a Decklink card). Here is the code:
public function createOverlay(ByVal Main as Bitmap, ByVal Key as Bitmap) as Bitmap
For index as integer =0 To (Key.Width*Key.Height)-1
Dim crntX= index Mod(Key.Width)
[code].....
This function will have to run infinitley until the user presses stop and keep updating the output buffer. How can i make it faster? ( i need at least 30 executions per second)
I need to read a bitmap generated with paint or similar programs and interpert the picture to detect straight lines of black, larger squares in red and smaller squares of yellow, green or red. Which one of the Visual Basic environments are is best suited for this? WPF or Forms or..The lines represent walls and for start we have square objects as obsticles. I would like to create a maze and allow a dot to travel between obstacles leaving a trace of pixels and not hit any of the objects untill it exits.
I like to write the logic for it but I do not know how would I read a 500x500 pixel picture and decode the colors of each pixel. I like to assign a byte for each pixel's color (256color) but only use 4 bits of it to for start.
I am doing this as hobby. So please forgive me because I should only look at your answers during my free times.It will take some time before I could see it and mark your work as Helpful or Answer.
How can i change the depth of color of an image using vb.net?My Program's Options Are: Convert To: 1 Bit, 4 Bits, 8 Bits ,16 Bits?
View 1 RepliesAny way to run through an image and check to see if the image contains a red pixel.
View 3 Replies[code]This code finds a certain coloured pixel in an image but I also want to be able to know how to search for a smaller image within bmp.But it doesn't work and Im a newbish coder.
View 20 RepliesDoes anyone have a VB 2008 code example to save a bitmap in 256 color (8 bits/pixel) PNG format, using the default Web palette? (I keep getting 32 bits/pixel).Note, this is not for icon use, but for images.
Dim bm As New Bitmap(1024, 1024)
...
bm.Save("test.PNG", ImageFormat.Png) seems to save with 32 bits/pixel
Suppose i have an image and i extract each pixel color and store it in a color array, is there any way by which i can save the color array along with the image? I was thinking about converting the color array to string and then integer and then append data to a text box, but then again i must store the text along with the image....and i dunno how to do that?
View 1 RepliesI would like to change the highlight color of listviewitem... My desired result is something like in VisualStudio... I have looked at these links yet I am failing to see how I would still incorporate the image.
[Code]....
I started off with a VERY simple form and added a picturebox item to it. The code I was following used a procedure in the Form1.vb to override the transparent color of the image:
bmp.MakeTransparent(Color.Fuchsia)
bmp was defined in the Form's "Load" section.
Now things are different. I have more than 20 picturebox items now, each created in the Form1.Designer.vb code as follows:
Me.Tile020.Image = CType(resources.GetObject("Tile020.Image"), System.Drawing.Image)
Me.Tile020.Location = New System.Drawing.Point(922, 297)
Me.Tile020.Name = "Tile020"
Me.Tile020.Size = New System.Drawing.Size(64, 64)
Me.Tile020.TabIndex = 3
Me.Tile020.TabStop = False
The image is referenced from the resources. When I run the program, I'd like all these images to have their backgrounds transparent. None of these controls is currently referenced anywhere in the code at present. What's the best way to get them to display transparently, other than recreating them as transparent .PNG's?
Toolstrip1 has toolstripdropdownbutton1 and some dropdown items are added with this.Now, Iam looking to set the color or marigin part of image dispalyed in toolstripmenuitem.Anyone can show me the details?
View 6 Replieshow to get color form a certain pixel from a bitmap image, but i cant find function getPixel in the picturebox object.
View 5 RepliesI've been wondering if converting a color image to grayscale will reduce it's size?
And also wondering how to convert the image to grayscale?
In a form I have an ImageList named MainLogoImageList containing a 100x100 pixel 32-bit colordepth image. That is my app logo.
I am too lazy to set up an icon editor and edit an icon of that logo, or convert the image to an .ICO file. (Ergh, well, I am not allowed to install custom utilities.)
To set my forms' icon, I use
Icon = IconFromImage(MainLogoImageList.Images(0))
in the OnLoad event handler to set the window icon.
In my about box, i have a PictureBox with no image. In its OnLoad event, I use
LogoPictureBox.Image = MyMainForm.MainLogoImageList.Images(0)
Icon = IconFromImage(MyMainForm.MainLogoImageList.Images(0))
to set the About box's icon and content.
So far, so good, the icon looks pretty good for a being created from a 100x100 pixel bitmap.
Is there an easy "no utility required" :-) way to get the icon that is returned my IconFromImage saved into an .ICO file so that it will keep the color depth when loaded as the app icon? I want to use exactly the icon that IconFromImage creates.
Saving it using
Dim S As New FileStream("MyAppIcon.ico", FileMode.Append, FileAccess.Write, FileShare.Write)
Icon.Save(S)
S.Close()
in the main form's OnLoad event handler and loading that .ICO file as the app icon in VS's project properties dialog yields and icon that is obviously converted to 16 colors, and looks awful.
I want to create an image dot.png that is circle filled with white color.I used followin
Dim bmp As Bitmap = New Bitmap(64, 64)
Dim g As Graphics = Graphics.FromImage(bmp)
g.FillEllipse(Brushes.White, 8, 8, 48, 48)
bmp.Save("d:dot.png")
I would like to obtain following image:
[Code]...
I want to draw a rectangle on image where color pixel of image is black
View 1 RepliesI have an image saved in a bitmap (bmp) as a result of some graphic manipulation. Part of it is transparent. And I can save it to a file in bmp, jpg, png, tif with no problem. I also want to fill the image background with a color of choice, which is saved in a PictureBox control (ColorBox1). I suppose I need to draw a rectangle like[code]...
View 2 RepliesI am doing project in vb.netI am using a Rich text box on which i can set different ont(name,size,bold,italic,underline),color to different selected text.I am able to do this in Rich textbox but i want to create bitmap (or assign to picturebox) of this of different text with different font style & color but i am getting not much font as like textbox in image..
View 1 Replies